Installing Type DM6381 Weigh
Scale Interface Card
D3P00861002
Planning Manual
PN4.11:DM6381
Original — November 1991
âPROVOX, PROFLEX, and PROVUE are registered trademarks of Fisher Controls International, Inc.
ENVOX is a trademark of Fisher Controls International, Inc.
ã Fisher Controls International, Inc. 1991. All rights reserved.
Printed in the U.S.A.
While this information is presented in good faith and believed to be accurate, Fisher Controls does not
guarantee satisfactory results from reliance upon such information. Nothing contained herein is to be
construed as a warranty or guarantee, express or implied, regarding the performance, merchantability,
fitness or any other matter with respect to the products, nor as a recommendation to use any product
or process in conflict with any patent. Fisher Controls reserves the right, without notice, to alter or
improve the designs or specifications of the products described herein.
Documentation Map
Documentation Map
Installing Type DM6381 Weigh Sacle
Interface Card
This map shows documents associated with the Type DM6381 Weigh Sacle
Interface Card. The number, title, and binder location are shown for each
document. To help you identify which document contains the information you
are looking for, see the descriptions on the back of this map. Other related
documents are listed in Section 1 of this manual.
SR90 Mux,
IFC, & UOC
Planning
Manual
PN4.2:CL6623/CL6625/CL6627
Installing the 20-Series (SR90) Controller
Family
PROVOX
Instrumentation
YOU ARE HERE
Installation
Planning
Manuals
SR90 MUX,
IFC, & UOC
Maintenance
Manuals
PN4.11:DM6381
Installing Type DM6381 Weigh Sacle
Interface Card
MM4.4:CP6601
Maintaining Type CP6601 Distributed MUX
Input/Output File, DM6300-Series Input, and
DM6400-Series Output Cards
X00061:CL6623--0
Original — November 1991
PN4.11:DM6381
iii
Documentation Map
Fisher documentation supports each stage of system development.
System Development Stages
Document Type & Contents
System Design
Configuration Engineering
Manuals
Configuration data-entry help
for a product, including theory
of operation for improved
product use.
User Manual for Configuration
Products
Operating methods and
procedures for using the
configuration software.
Technical Reference Manuals
Advanced user information for
expanding the capability of the
PROVOX system.
System Planning and
Installation
Installation Planning Notes
Site preparation, including the
environment, power, and
grounding. Also, product
input/output signal wiring, cable
connections, and software
installation.
System Startup and Operation
User Manuals
Operating methods and
procedures for a product.
Tutorials
Structured training for
operators.
Maintenance
Maintenance Manuals
Preventative maintenance,
calibration, troubleshooting,
and repair procedures.
Ordering Information — To order additional manuals, contact your local
sales representative, specifying the number, title, and quantity of each
document required.
iv
Original — November 1991
PN4.11:DM6381
Introduction
1
1-1
1
Introduction
This planning manual describes the physical and electrical installation
requirements of the Type DM6381 Weigh Scale Interface Card used with
PROVOXâ instrumentation systems.
1.1
Intended Audience
This planning manual is intended for use by trained installation personnel.
1.2
How to Use this Planning Manual
Use this planning manual to prepare the Types DM6381 Weigh Scale
Interface Card and its components for installation.
1.3
Planning Manual Structure
Section 1 — Introduction: product description and related documentation.
Section 2 — Installation: presents the information to install the I/O card,
cables, and termination panel.
Section 3 — Interface Card Format: describes how the interface card
functions with the controller.
Section 4 — Installation Example: describes how to install and configure
the interface card.
Section 5 — Reporting and Indicators: describes the the reporting
provided by the interface card and the indicators on the card.
1.4
Product Description
The Type DM6381 Weigh Sacle Interface Card consists of:
I/O card
Termination panel
Original — November 1991
PN4.11:DM6381
1-2
Introduction
1.5
Manual Conventions
The following conventions are used in this document.
1
Abbreviations/Acronyms — Standard abbreviations are used in this
document. Acronyms used are explained at their initial usage.
Document Control — The title page and the footer of each page
contain the revision or change level and release date of the
document.
Cross Referencing — References to other documentation for
additional information list the document number and name.
1.6
Excellence in Documentation
Our goal is to provide documents that meet your needs. Through surveys
and interviews, we continually evaluate our documents as part of the
broad Fisher customer-support program. Various manuals are produced
for different purposes and for readers with varying backgrounds and
experience.
Please assist us in the evaluation of this manual by completing the reader
evaluation form located at the end of the document. In addition, if you
have any suggestions for specific pages, return a marked-up copy along
with your survey.
1.7
Related Documentation
Refer to the following documentation when installing the Type DM6381
Weigh Sacle Interface Card:
Planning the Installation (PN4:002)
AC and DC Power & Ground Wiring (PN4:003)
Signal Wiring and Data Highway Guidelines (PN4:004)
Preventing Electrostatic Damage (PN4:005)
Environmental Conditions for Instrumentation Systems (PN4:006)
Installing Type CP6601 Distributed MUX I/O File (PN4.4:CP6601)
Installing the 20-Series (SR90) Controller Family
(PN4.2:CL6623/CL6625/CL6627)
PN4.11:DM6381
Original — November 1991
Introduction
1-3
Maintaining Type CP6601 Distributed MUX Input/Output File,
DM6300-Series Input, and DM6400-Series Output Cards
(MM4.4:CP6601)
Installing Type DM6001 and DM6003 Multiplexer Units
(PN4.11:DM6001)
Maintaining the Type DM6001 Multiplexer Control Unit
(MM4.11:DM6001, Rev. A)
Maintaining Type DM6003 Multiplexer I/O File Units, DM6300 Series
Input Units, and DM6400 Series Output Units (MM4.11:DM6003,
Rev. A)
Original — November 1991
PN4.11:DM6381
1
1-4
Introduction
1
This page intentionally left blank.
PN4.11:DM6381
Original — November 1991
Installation
2
2-1
Installation
2
This section describes installation and operating instructions for the Type
DM6381 Weigh Scale Interface Card. The interface card is shown in
Figure 2-1.
The interface card can be used with:
Toledo model 8132, 8140, and 8142
Masstron model M5000
BLH models 4310A and 4315A
The interface card is used with either a multiplexer control unit, a unit
operations controller (UOC), or a multiplexer controller (MUX) that is part
of a PROVOX instrumentation system.
Distributed MUX I/O File
20-wire
Ribbon Cable
Interface
Card
Figure 2-1.
Original — November 1991
Field
Termination
Panel
X00717--A
Typical Weigh Scale Interface Card in I/O File
PN4.11:DM6381
2-2
Installation
2.1
Calibrating the Scale
Determine the maximum gross weight to be measured by the scale. Then
calibrate the scale, setting the scale switches so that the scale range
accommodates the maximum gross weight to be measured. Refer to the
scale user manual for switch settings.
2
If two scales are to be used with the interface card, repeat this step for
the second scale. The two scales must be the same model, but they can
have different scale ranges.
2.2
Setting the Scale Format Switches
For each scale to be connected to the interface card set the scale
switches or jumpers so that the data transmission format of the scale
matches that of the interface card.
Table 2-1, Table 2-2, and Table 2-3 show the correct positions for the
scale format switches or jumpers:
For Toledo scales, use Table 2-1.
For Masstron scales, use Table 2-2.
For BLH scales, use Table 2-3.
Table 2-1.
Toledo Model 8132 Switch Positions (1)
Switch
Required Setting
Explanation
SW5-4
OFF
tare display on
SW6-5
ON
demand mode normal (continuous)
SW6-6
OFF
normal mode expand (cal only)
SW7-2
OFF
checksum required
SW7-6
ON
baud rate select
SW7-7
ON
4800 baud
1. Switches not included in this table do not apply to interface card use.
Table 2-2.
Masstron Model M5000 Jumper Position (1)
Jumper
Description
Required Position
Explanation
JU3
Baud Rate
1 (top)
4800 baud
JU7
Comp Xmit
ON (._. ._.)
ACTIVE
JU8
Comp Xmit
ON (._. ._.)
ACTIVE
JU13
20mA/RS232
OFF (open)
20 mA
1. Jumpers not included in this table do not apply to interface card use.
PN4.11:DM6381
Original — November 1991
Installation
2-3
Table 2-3.
BLH Model 4310A and 4315A
Switch Positions Switch (1)
Switch
Required Setting
S1-1
OFF
S1-2
OFF
S1-3
OFF
S1-4
ON
S1-5
ON
S1-6
ON
S1-7
ON
S1-8
OFF
S2-1
ON
S2-2
OFF
S2-3
OFF
S2-4
OFF
2
1. Switches not included in this table do not apply to
interface card use.
2.3
Switch Settings
The weigh scale interface card contains a scale type switch (S2) and a
weight range switch (S1). Figure 2-2 shows the interface card and the
location of the two switches.
S1
PS1
S2
X00613--A
Figure 2-2.
2.3.1
Weigh Scale Interface Card
Setting the Scale Type Select Switches
The scale type select switch (S2) is located in the lower left portion of the
interface card (see Figure 2-2). Set the switch (poles 1 through 4) as
shown in Table 2-4, for the type scale being used.
Original — November 1991
PN4.11:DM6381
2-4
Installation
Table 2-4.
Interface Card Scale Type Select Switch Positions
Interface Card Switches
2
2.3.2
Scale Model
1
2
3
4
Toledo 8132
OFF
OFF
ON
OFF
Masstron M5000
OFF
OFF
ON
ON
BLH 4310/4315A
OFF
OFF
OFF
ON
Special WSIU
OFF
OFF
OFF
OFF
Setting the Scale Range Switches
Switch S1 is the scale range switch and is located near the left center of
the interface card (see Figure 2-2). Poles 1 through 4 pertain to data
channel one; poles 5 through 8 pertain to data channel two.
Connect scale one to data channel one (top connector on the interface
card). For scale one, consult Table 2-5 and find the scale range that has
the same maximum value as the scale range calibrated for scale one. If
the exact calibrated value is not listed in Table 2-5, find the scale range
that has the next highest maximum value. Set the scale range switches 1
through 4 as shown in Table 2-4.
If a second scale is used, it is scale two. Connect scale two to data
channel two. Repeat the actions of the previous paragraph, but set
switches 5 through 8 according to Table 2-5.
PN4.11:DM6381
Original — November 1991
Installation
2-5
Table 2-5.
Interface Card Scale Range Switch Positions
Switch Switch
Switch
Switch
Scale Range
1/5
2/6
3/7
4/8
Not Used
0-50
0-100
0-300
0-500
0-1000
0-2000
0-3000
0-5000
0-10,000
0-20,000
0-30,000
0-50,000
0-100,000
0-200,000
Not Used
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
2
Note
If the V2 software version of the Masstron M5000
is used, the scale range of the scale overrides the
scale range set on the interface card. It is
important to remember this fact later, when
configuring the console.
To determine whether a Masstron M5000 has V2
software, put the scale in the weigh mode and
press the access button. If the scale displays the
calibration parameter 0, the scale does have V2
software. If the scale does not react, it probably
does not have V2 software; to verify this
absolutely, consult a Masstron representative.
2.4
Interface Card Installation
Insert the interface card into any of the six I/O card slots of the I/O file.
Make sure the interface card is seated firmly.
Original — November 1991
PN4.11:DM6381
2-6
Installation
2.5
Interface Cable Installation
Do not mix analog and digital I/O cards in the same I/O file. Although the
interface card appears to the system console to be an analog I/O card, it
actually is composed of digital circuitry. Accordingly, the interface card
should not be used in an I/O file that contains analog I/O cards.
2
Route the necessary length — not to exceed 1000 feet (304.8 m) — of 18
AWG (0.88 mm2) twisted-pair, shielded cable between each scale used
and the interface card. Do not place the interface card cables in cable
trays used for other cables that transmit analog I/O signals.
At the interface card end of each cable, attach a 15-pin male connector.
At the scale end of each cable used, attach the mating connector
specified by the scale user manual. Figure 2-3 shows the pin connections
for the interface card and a Toledo scale. Figure 2-4 shows the pin
connections for the interface card and a Masstron scale. Figure 2-5
shows the pin connections for the interface card and a BLH scale.
Connect the 15-pin male connectors to the interface card’s female
connectors of the scales, as follows:
For a Toledo 8132 scale, use the connector near the load port
connector.
For a Masstron scale, use the connector labelled COMPUTER (J2).
For a BLH scale, use the connector labelled J3.
PN4.11:DM6381
Original — November 1991
Installation
2.5.1
2-7
Connections for a Toledo Scale
Figure 2-3 shows the interface cable connections for a Toledo scale.
Toledo Model 8132, 8140 or 8142
Weigh Scale
18 AWG (0.82 mm2)
Twisted-pair, Shielded Cable
Weigh Scale Interface Card
2
+ 22 V
20 mA Supply
A
20 mA Transmit
B
--20 mA Transmit
C
P
3
4
Receive Data Output
2
Notes:
See table for pinout
1
2
Supply Ground
7
Chassis Ground
The supply ground can be connected to pin 12
or pin 15, instead of to pin 7.
Pin #
Toledo Model #
8132 8140 8142
A
B
C
1
Shield
1
Receive Data Input
25
10
11
15
14
9
15
14
9
Pinouts per Model
X00594:CP6601--0
Figure 2-3.
Field Wiring Cable Pin connections for Type DM6381 Weigh Scale
Interface Card with Toledo Weigh Scale
2.5.2
Connections for a Masstron Scale
Figure 2-4 shows the interface cable connections for a Masstron scale.
18 AWG (0.82 mm2)
Twisted-pair, Shielded Cable
Masstron Model M5000
Weigh Scale
+ Transmit (Source)
2
-- Transmit (Sink)
3
+ Receive (Source)
4
-- Receive (Sink)
5
P
Weigh Scale Interface Card
3
Receive Data Input
4
P
Receive Data Output
2
Transmit Data Input
1
Transmit Data Output
Shield
Case Ground
X00595:CP6601--0
Figure 2-4.
Field Wiring Cable Pin Connections for Type DM6381 Weigh Scale
Interface Card with Masstron Weigh Scale
Original — November 1991
PN4.11:DM6381
2-8
Installation
2.5.3
Connections for a BLH Scale
Figure 2-5 shows the interface cable connections for a BLH scale.
18 AWG (0.82 mm2)
Twisted-pair, Shielded Cable
BLH Model 4310A or
4315A Weigh Scale
2
+5 V dc
T
22W
+ Transmit (Source)
8
7
21
-- Transmit (Sink)
P
3 Receive Data Input
4
31
+5 V dc
R
Weigh Scale Interface Card
Receive Data Output
22W
28
+ Receive (Source)
23
-- Receive (Sink)
6
P
2 Transmit Data Input
1
32
Transmit Data Output
1
Shield
Case
Ground
X00596:CP6601--0
Figure 2-5.
PN4.11:DM6381
Field Wiring Cable Pin Connections for Type DM6381 Weigh Scale
Interface Card with BLH Scale
Original — November 1991
Installation
2.5.4
2-9
Connecting Two Scales to an Interface Card
Figure 2-6 shows how to connect two scales to a Weigh Scale Interface
card.
Weigh Scale Interface Card
2
Data Port One
Connection
Scale One
Scale Two
Data Port Two
Connection
Figure 2-6.
X00597:CP6601--0
Weigh Scale Interface Card-to-Scale Connections
Original — November 1991
PN4.11:DM6381
2-10
Installation
2
This page intentionally left blank.
PN4.11:DM6381
Original — November 1991
Interface Card Format
3
3.1
3-1
Interface Card Format
3
Software Requirements
If the interface card is to be used with a multiplexer control unit,
multiplexer controller (MUX), or unit operations controller (UOC) the
software must be either PROFLEXâ 5.0 or later or ENVOXä P1.2 or later.
3.2
Interface Card Format
The interface card provides scale data in the form of eight 16-bit words.
The first four words contain information pertaining to scale one:
Gross weight (word one) —The total weight registered by the scale.
Gross weight equals net weight weight plus tare weight.
Net weight (word two) —The weight of product only. Net weight
equals gross weight minus tare weight.
Tare weight (word three) —The weight of the product container. Tare
weight equals gross weight minus net weight.
Status (word four) —The status of the scale and of the interface
card. The meaning of the different bits of the status word is shown in
Table 3-1 for Toledo scales. in Table 3-2 for Masstron scales, and in
Table 3-3 for BLH scales.
Words five through eight give corresponding information for scale two.
The values of the eight data words are directed to channels one through
eight at the system console.
Each weigh scale can have four information fields associated with it,
including gross weight, net weight, tare weight, and the status word. The
scale transmits two of the weight components and the weigh scale
interface card computes the third. Teledo and Masstron scales transmit
the indicated and tare weight, the BLH scale transmits either net weight or
gross weight, but not both. The weigh scale interface card loads the the
transmitted value into the correct word and clears the other two words
since it cannot compute the other two values from a single value. These
values are configured as analog inputs. The controller multiples the two
byte percent of span values by the user defined engineering units range.
Original — November 1991
PN4.11:DM6381
3-2
Interface Card Format
A user who reads weight values when a scale is motionless can configure
weight input points for all three weight component values from the scale;
the weight components have the correct relationships to each other. But a
user who measures changing weight, for example, to determine when to
shut off a valve, should configure a weight input point for only one of the
weight component values. The configuration of two or three weight input
points from a scale that measures a changing weight could yield values
that had incorrect relationships to each other, by a small fraction of a
percent.
3
Table 3-1.
Status Word Format for Toledo Scales
Significance
Bit Number (1)
Bit Description
Contents
Meaning
15
Error indicator
1
1 in at least one of bits 8-14
14
Interface unit-to-scale
communications (2)
1
Failure rates exceeds 5
percent
13
Not used (Reserved)
0
------
12
Interface unit self-test
1
Error detected
11
Data port data integrity
1
Data is old or invalid
10
Configuration error
1
Weight data is clamped at the
maximum value
9
Not used (Reserved)
0
------
8
Not used (Reserved)
0
------
7
Error indicator
1
1 in at least one of bits 0-6
6
Scale capacity status
1
scale over capacity
5
Scale motion status
1
scale in motion
4
Not used (Reserved)
0
------
3
Not used (Reserved)
0
------
2
Not used (Reserved)
0
------
1
Not used (Reserved)
0
------
0
Not used (Reserved)
0
------
1. Bit 15 is the most significant (sign) bit; bit 0 is the least significant bit.
2. Conditions which cause detection of communications failure are: bad parity, bad
checksum, and timeouts.
PN4.11:DM6381
Original — November 1991
Interface Card Format
Table 3-2.
3-3
Status Word Format for Masstron Scales
Significance
Bit Number (1)
Bit Description
Contents
Meaning
15
Error indicator
1
1 in at least one of bits 8-14
14
Interface unit-to-scale
communications(2)
1
Failure rate exceeds
5 percent
13
Scale self-test
1
Error detected
12
Interface unit self-test
1
Error detected
11
Data port data integrity
1
Data is old or invalid
10
Configuration error
1
Weight data is clamped at
the maximum value
9
Not used (Reserved)
0
------
8
Not used (Reserved)
0
------
7
Error indicator
1
1 in at least one of bits 0-6
6
Scale capacity status
1
Scale over capacity
5
Scale motion status
1
Scale in motion
4
Scale powerup status
1
Scale in powerup
3
Alternate unit status
1
Units other than pounds or
kilograms are used
2
Not used (Reserved)
0
------
1
Not used (Reserved)
0
------
0
Not used (Reserved)
0
------
3
1. Bit 15 is the most significant (sign) bit; bit 0 is the least significant bit.
2. Conditions which cause detection of communications failure are bad checksum or
timeouts.
Original — November 1991
PN4.11:DM6381
3-4
Interface Card Format
Table 3-3.
Status Word Format for BLH Scales
Significance
Bit
Number(1)
3
Bit Description
Contents
Meaning
15
Error indicator
1
1 in at least one of bits 8-14
14
Interface unit-to-scale
communications (2)
1
Failure rate exceeds 5
percent
13
Not used (Reserved)
0
------
12
Interface unit self-test
1
Error detected
11
Data port data integrity
1
Data is old or invalid
10
Configuration error
1
Weight data is clamped at
the maximum value
9
Not used (Reserved)
0
------
8
Not used (Reserved)
0
------
7
Error indicator
1
1 in at least one of bits 0-6
6
Scale capacity status
1
Scale over capacity
5
Scale motion status
1
Scale in motion
4
Not used (Reserved)
0
------
3
Not used (Reserved)
0
------
2
Net weight status
0
Only net weight supplied
1
Only gross weight supplied
1
Not used (Reserved)
0
------
0
Not used (Reserved)
0
------
1. Bit 15 is the most significant (sign) bit; bit 0 is the least significant bit.
2. Conditions which cause detection of communications failure are bad parity or
timeouts.
PN4.11:DM6381
Original — November 1991
Installation Example
4
Installation Example
4.1
Introduction
4-1
This example illustrates how to install and configure an interface card
used with two scales. If the use of a particular make or model of scale
requires a modification to the steps of this example, such a modification is
noted.
Suppose that the product weighed by scale one has a maximum net
weight of 890 pounds, a tare weight of 110 pounds, and a maximum
gross weight of 1000 pounds. The product weighed by scale two has a
maximum net weight of 23,800 pounds, a tare weight of 1200 pounds,
and a maximum gross weight of 25,000 pounds.
Further suppose that the number of the I/O file is 16, and that the
interface card is in I/O card slot 2 of the I/O file. Suppose that the user
configures three weight input points: gross weight from scale one, net
weight scale two, and the status word from scale two.
4.2
Installation
To install the interface card, the user performs these steps:
Step 1:
Calibrates scale one to accommodate 1000 pounds, selecting
the scale range 0-1000 pounds by setting the appropriate
switches of the scale. The user calibrates scale two to
accommodate 25,000 pounds, selecting the scale range
0-25,000 pounds by setting the appropriate switches of the
scale.
Step 2:
Makes sure that the scale switches are set according to
Table 2-1, Table 2-2, or Table 2-3, as appropriate for the
scales used.
Step 3:
Makes sure that the interface card scale type select switches 1
through 4 are set for the make of scales used, according to
Table 2-4.
Step 4:
Sets interface card scale range switches as follows:
a. Scale one is is calibrated for a range of 0-1000 pounds.
This range is listed in Table 2-5. Accordingly, the user sets
switches 1 through 4 to ON, OFF, ON, OFF.
Original — November 1991
PN4.11:DM6381
4
4-2
Installation Example
b. Scale two is calibrated for a range of 0-25,000 pounds.
This is not one of the ranges shown in Table 2-5, so the
user must select the next highest range listed, 0-30,000
pounds. This is done by setting switches 5 through 8 to
ON, ON, OFF, ON.
For Masstron V2 users only — The range of V2 software
versions of the Masstron M5000 scale overrides the
settings of switches 5 through 8.
4
Step 5:
Inserts the interface card into an I/O card slot of the I/O file.
Step 6:
Assembles and connects a cable between scale one and the
interface card, and assembles and connects cable between
scale two and the interface card per section 2.5.
Step 7:
Configures weight input points. To configure the first point,
gross weight from scale one, the user:
a. Selects the card type WSI.
b. Enters the file, card, and channel number, in the form
X-Y-Z. In this example the file number is 16, the card
number is 2 (the position in the I/O file, and the channel
number is 1, the top connector on the card. Gross weight
from scale one is reported in interface card data word one,
so the channel number is 1. The address is: @16-2-1.
For BLH users only — To configure this point for gross
weight, scale one must be set for gross weight.
c. Completes the QLD entries for the point, making sure that
the engineering-unit values match the scale range selected
for scale one. That is, the zero-percent engineering-unit
value must be zero, and the 100-percent engineering-unit
value must be 1000.
Step 8:
Configuration of the second point, net weight from scale two is
similar:
a. Interface card data word six reports net weight from scale
two, so the address is: @16-2-6.
For BLH users only — To configure this point for net
weight, scale two must be set for net weight.
b. The zero-percent engineering-unit value must be zero, and
the 100-percent engineering-unit value must be 30,000.
For Masstron V2 users only — The user of a V2 software
version of a Masstron scale must configure the
100-percent engineering-unit value to be 25,000, to match
the upper range limit of the scale.
PN4.11:DM6381
Original — November 1991
Installation Example
Step 9:
4-3
Configuration of the third point, the status word from scale two,
is slightly different:
a. The file address is: @16-2-8; data word eight is the scale
two status word.
b. Alarms are defined during console configuration: each
alarm must have a descriptor entered. A low alarm
indicates a hardware problem, and a high alarm indicates
a process-status problem. Suppose that the user in this
example wants alarm B to indicate a hardware problem.
Alarm B therefore is defined to be HDW-ER; it is set at
--1.0 percent, with zero deadband. Alarm C is to indicate a
process-status problem. Accordingly, alarm C is defined to
be PRC-ST, and it is set to +0.5 percent, with zero
deadband.
c. When configuration is over and the interface card is in use,
the descriptor HDW-ER would appear on the faceplate of
the third point in case of a hardware problem. To find
possible causes for the alarm, the user would consult the
entries for bits 8 through 14 of Table 4-1, Table 4-2, or 4-3,
according to the make of the scale used. A process-status
problem would cause the descriptor PRC-ST to appear in
the faceplate of the third point. The user would consult the
entries for bits 0 through 6 of the appropriate table, Table
4-1, Table 4-2, or Table 4-3, to find possible causes for the
alarm.
Note
For most scales, the console bar-graph display
shows weight as a percentage of the scale range
of the interface card, not as a percentage of the
scale, unless the two scale ranges are exactly
equal.
However, if a V2 software version of the Masstron
M5000 scale is used, the opposite holds true. The
console bar-graph display shows weight as a
percentage of the scale range of the scale, not as
a percentage of the scale range of the interface
card, unless the two scale ranges are identical.
Original — November 1991
PN4.11:DM6381
4
4-4
Installation Example
4
This page intentionally left blank.
PN4.11:DM6381
Original — November 1991
Reporting and Indicators
5
Reporting and Indicators
5.1
Introduction
5-1
This section provides a more detailed explanation of how the interface
card functions.
5.2
Weight Out-of-Range Reporting
The interface card accurately reports gross weights as much as 14
percent below or over the specified range. Should an actual weight value
be out of range by more than 14 percent, the interface card clamps the
weight, that is, it reports the weight at the 14-percent out-of-range value.
For example, consider scale one in the example in Section 4. The
interface card’s scale range for scale one is set for 0-1000 pounds.
Therefore, the interface card accurately reports weights from --140 to
1140 pounds. Should the actual weight be greater than 1140, the
interface card would still report the 1140 value, but would set to 1 the
configuration error bit (bit 10) and the data port integrity bit (bit 11) of the
status word.
The scale range for scale two, in the example of Section 4, is set for
0-30,000 pounds. Therefore, the interface card accurately reports weights
from --4200 to 34,200 pounds.
For Masstron V2 users only — If a V2 software version of the Masstron
scale is used in the example, the scale range setting for scale two is that
of the scale, 0-25,000 pounds. Therefore, the interface card accurately
reports weights from 3500 to 28,500 pounds.
5.3
LED Indications
Figure 5-1 shows the position of the three interface card LED’s. The
center LED remains on while the card is in use; it goes out to indicate a
self-test failure.
Original — November 1991
PN4.11:DM6381
5
5-2
Reporting and Indicators
The other two LED’s are yellow; they have these functions:
When the interface card is inserted into the I/O file, before scales are
connected, both yellow LED’s come on briefly, to confirm that the
interface card is receiving power. Then, the LED’s go off.
A yellow LED goes off to indicate bad communications integrity
between the interface card and a scale. The top LED shows
communications integrity for data port one; the bottom LED shows
communications integrity for data port two. After confirming that the
interface card is receiving power, both yellow LED’s go off. Once
communications integrity is established, the yellow LED’s come on.
5
Both yellow LED’s flash to indicate that the interface card scale type
selector switches are not set for one of the scales supported by the
interface card.
Data Port
One
Connector
Data Port One Communications
Integrity LED (Yellow)
WSIU Self-Test Integrity LED (Green)
Data Port Two Communications
Integrity LED (Yellow)
Data Port Two
Connector
X00746--A
Figure 5-1.
Table 5-1.
PN4.11:DM6381
LED Indicators
Weigh Scale Interface Card Fault Indicators
Green LED
Yellow LED
Analysis
ON
ON
Normal operation
ON
OFF
Waiting for communications
ON
Turns OFF
Communications error exceeds 5%
ON
Flashing (.67 Hz)
Error during powerup self-test
PN
Flashing (2.4 Hz)
Scale type setting incorrect
OFF
ON
Error during normal operation
OFF
OFF
Card is reset/no power/bad fuse
Original — November 1991
Reader’s Evaluation Form
Reader’s Evaluation
Our goal is to provide you with documents that excel in meeting your needs. Please help us
evaluate this document by answering these few questions.
If you have suggestions on ways to improve any page of the document, please mark your
suggestions on a copy of the page and enclose the copy with the survey.
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
1. Is the information organized in a logical manner?
2. Can you find specific information in a reasonable
period of time?
3. Does the manual describe the way the product
really works?
4. Is information adequately cross-referenced?
5. Is the information easy to understand?
6. Is there too much information?
7. Are there sufficient examples and illustrations?
8. Can you find information which is in other manuals?
Excellent Average Poor
9. How do you rate the overall usability of this manual?
Name/Title
Dept
Company
Date
Mailing Address
Phone
Original — November 1991
--
--
PN4.11:DM6381
NO POSTAGE
NECESSARY
IF MAILED
IN THE
UNITED STATES
FIRST-CLASS MAIL PERMIT NO. 7507 AUSTIN TX
POSTAGE WILL BE PAID BY ADDRESSEE
FISHER CONTROLS INTERNATIONAL INC
TECHNICAL DOCUMENTATION MD 10
1712 CENTRE CREEK DR
AUSTIN TX 78754--9971
Fold
Tape along this edge only. Do Not Staple.
This page intentionally left blank.
For information, contact Fisher Controls:
Austin, Texas 78753 USA
Leicester, England LE3 2WU
Sao Paulo 05424 Brazil
Singapore 0512
PN4.11:DM6381