APM Customer Support
TECHNICAL TRAINING PART 3
COMMUNICATION
May 2011
APM Annual International Partners
Conference
1
Agenda
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4-20mA / HART
RS485 / Modbus
GPRS / GSM / Smart GPRS
3DLinkPro / Modem Wizard
TCP/IP
Barriers / Isolators for Explosive environment
Understanding Computers and Networking
– MAC address, IP, TCP, Ports, Routers, etc.
May 2011
APM Annual International Partners Conference
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Connection Methods
The 3DLevelScanner can be connected to different
systems for different purposes
• 4-20mA
– A method of level/volume indication to a PLC or DCS system
• HART
– Using existing 4-20mA connection to transfer more data and
allow a PC software to connect to a remote device
• RS485
– A serial, 2-wire, multidrop (“Daisy Chain”) communication
protocol, works in a mode of one master-many slaves, with
APM it is limited up to 64 scanners
• Modbus
– Type of communication that utilizes the RS485 physical
infrastructure
May 2011
APM Annual International Partners Conference
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Connection Methods (2)
• GSM (CSD)
– Using a RS485 GSM modem to connect and communicate
with another GSM modem in a different location
• GSM (GPRS)
– Using a RS485 GPRS compatible modem to convert the
serial data from the RS485 bus to an IP packet and transfer
it over the global Internet network
– The other party should also be connected to the Internet
• 3DLinkPro
– APM approved modem for both GSM and GPRS
• Modem Wizard
– Configuration application for the 3DLinkPro, used to test and
confirm the functionality of the modem and SIM card
May 2011
APM Annual International Partners Conference
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Connection Methods (3)
• TCP/IP
– Using a compatible RS485 to TCP/IP convertor,
the 3DLevelScanners can be connected to a local
area network and be monitored by any computer
connected to that network
• APM recommends the use of BF-430
manufactured by CHIYU
• Connecting the 3DLevelScanner requires
know-how and understanding of many terms
and how they integrate together
• Let’s Start…
May 2011
APM Annual International Partners Conference
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4-20mA
• The 3DLevelScanner output on an active 4-20mA
– The Volume in percentage as defined by the full and empty calibration
levels
• The 4-20mA requires connection of a passive device on the other
side for proper performance
• The 3DLevelScanner can be configured to output 4-20mA  0%-
100% or 20-4mA  0%-100%
• For testing purposes, the 3DLevelScanner can simulate any current
level between 4mA to 20mA in resolution of 0.01mA
May 2011
APM Annual International Partners Conference
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4-20mA+HART
• The 3DLevelScanner can
be controlled via the
3DLevel Manager using
the 4-20mA output
• A MicroLink HART
modem is recommended
for use with the
3DLevelScanner
• HART Baud rate is
1.2kbps
• Max cable distance: 3km
(2miles)
May 2011
APM Annual International Partners
Conference
Connection example of 47
20mA + HART
Multiple Scanners Using 4-20ma Output
Only
Silo 1
Silo2
Silo3
Silo 4
Silo 5
Silo 6
Silo 7
Control Room
Paperless
Recorder
May 2011
APM Annual International Partners Conference
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RS485
• Serial communication method
– One device is a master, in this case the 3DLevelManager
(or 3DVision)
– All other devices are listening and replying on demand
• Each node on the bus has a unique address (polling
address) between 00 to 63
• Masters can be connected on the RS485 bus using a
communication converter, such as GSM modem, TCP/IP
converter, USB, RS-232, etc.
• Cable requirements:
– Shielded, Twisted-pair, 120 Ohm impedance
• Important: Daisy-Chain connection, 120 Ohm resistor and
shield grounded at one end of the bus/line/cable
May 2011
APM Annual International Partners Conference
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RS485
• Resistors must be at the far ends of the RS485
bus
• When two or more power supplies are in use,
it is recommended to use mutual ground
• Cable grounding shield must be connected to
the ground on one end of the cable
• Max Cable distance: <1000m
May 2011
APM Annual International Partners Conference
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Daisy Chain connection up to 64 scanners
Scanner
1
Scanner
2
Scanner
3
RS485 (+)
Scanner
n
RS485 (-)
120 Ω
120 Ω
RS485 (-)
RS485 (+)
May 2011
APM Annual International Partners Conference
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GSM using 3DLinkPro
• Using two GSM modems to send and receive data
• On the scanner side the modem must be connected
to the RS485 bus
• On the computer side, the modem communication
port must be connected to the computer using
compatible converter
• The SIM cards on both GSM modems must be
enabled with data transfer capability from the cellular
provider, also referred to as CSD
May 2011
APM Annual International Partners Conference
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GSM Connection
May 2011
APM Annual International Partners Conference
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GPRS using 3DLinkPro
• Using 3DLinkPro to convert the RS485 data into TCP/IP
packet and transfer it over GSM network
• SIM card must be activated and compatible with GPRS,
and allow sending and receiving of SMS messages
• Recommended data quota/plan is at least 150MB/month in
constant connection
• Before using the 3DLinkPro it is advised to test the SIM
card with the 3DLinkPro in-house before shipping (using
the APM Modem Wizard)
– SIM #, APN name must be obtained
• Disable any PIN code / Username and Password
• Preferable to have a fixed IP for the SIM card
• Note: one of the scanners must have polling address 00
May 2011
APM Annual International Partners Conference
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GPRS Connection
May 2011
APM Annual International Partners Conference
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GSM/GPRS using 3DLinkPro
Steps for connecting the 3DLevelScanner to the
3DLevelManager:
– Open the manager and start a communication to
the specified phone number using GPRS option
– Send SMS to the 3DLinkPro:
e.g.: CALLAPM,212.235.27.113,7040,internet,
– Wait for connection
• Note: In order to make the connection, in the local
network, a port forwarding option must be activated
to the computer’s local IP Address
• SMS to reset the 3DLinkPro: HW MODEM RESET
May 2011
APM Annual International Partners Conference
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Smart GPRS
• Enables sending text messages (SMS) for GPRS connection
via the SMS Server
• SMS Server = GSM Modem connected to a computer + APM’s
application running
• Connection via the 3DLevel Manager software tool
May 2011
APM Annual International Partners Conference
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3DLinkPro – Computer Connection
May 2011
APM Annual International Partners Conference
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Modem Wizard
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•
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Fill required fields under “Modem Details”
Press “Analyze!”
Results appear in “Analyzed Info”
If all fields are filled, communication is ok and ready for
connection
May 2011
APM Annual International Partners Conference
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3DLinkPro Configuration via Modem
Wizard
 Modem Wizard is not recommended for use as all
3DLinkPros are configured prior to shipping
 Enables configuration of Username/Password (if any)
 Enables configuration of 4 different operation modes,
depending on the country and the cellular provider:
Mode # Band
Description
0
GSM 900MHz + DCS 1800MHz
Europe / Israel
1
GMS 850MHz + PCS 1900MHz and
AutoBand selection mode
USA (ISPs: AT&T & MNVO (Kore,
Aeris, nPhase)
2
GMS 850MHz + PCS 1900MHz and
AutoBand selection + SIM
Application Toolkit enabled mode
USA (ISPs: T-mobile & MNVO (Raco
, Sensor Logic, Nexaira Jasper
Wireless)
3
GSM 900MHz + PCS 1900MHz
Mexico
May 2011
APM Annual International Partners Conference
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TCP/IP Connection
 It is possible to convert the RS485 serial bus to a TCP packet
and transfer it over Local Area Network (LAN) using a
compatible device
 APM recommends to use model BF-430 manufactured by
Scanner Scanner Scanner
Scanner
CHIYU
1
2
3
n
RS485(+)
RS485(-)
120 Ω
120 Ω
RS485(-)
RS485(+)
n = 1...64
IP Address: 192.168.2.124
IP Port: 7024
IP Network
May 2011
APM Annual International Partners Conference
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TCP/IP
 Setup example
May 2011
APM Annual International Partners Conference
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Modbus (RTU)
• RS485 Serial communication method designed for industrial
devices for controlling and monitoring
• Using standard Modbus commands the measure data can be
received by the connected controller
• Note: When using Modbus (via the RS485), do not use the
3DLevelManager in parallel
May 2011
APM Annual International Partners Conference
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Explosive Installations
• ATEX II 1/2D, 2G (Head-zone 21,
Antenna-zone 20)
• FM CL I,II Div I GP CDEFG
• For explosive areas, the customer is
responsible to install the scanner
according to the local guidelines
For the Control Drawing exit
presentation and open this:
May 2011
APM Annual International Partners Conference
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THANK YOU!
May 2011
APM Annual International Partners
Conference
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