ARCNET
Datapoint
LAN
70
LAN
ARCNET
LAN Datapoint
=ARC+
ARC
Attached Resource Computer
ARCNET
AR C NE T
ARCNET
ARCNET
ARCNET
ARCNET
ARCNET
0~507
2.5 Mbps
ARCNET
ARCNET
16
CRC--- Cyclic Redundancy Check
ARCNET
ARCNET
OSI
Open Systems Interconnect
ARCNET
ARCNET
MAC
ARCNET
255
Medium Access Control
MAC
CRC
ARCNET
ARCNET
ARCNET
ARCNET
MAC
0
ITT
255
0
MAC
Invitation to Transmit
MAC
MAC
109 122
6
255
FBE (Free Buffer Enquiry)
ACK
NAK
ACK
0 507
CRC
ACK
507
ARCNET
0
MAC
0
ACK
NAK
ARCNET
MAC
MAC
1
...
1
1
ARCNET
ARCNET
HUB
HUB
HUB
6.7
4
ARCNET
NIM(Network Interface Modules)
ARCNET
ARCNET
ARCNET
ARCNET
90C26
90C65
90C982A
90C126
90C165
90C66
90C198
210010
210019
20020
20022
20051
20051+
XT
XT
XT
XT
XT
XT
ARCNET
ARCNET
Datapoint
(RIM) SMSC
Standard MicroSystems
Corporation
ARCNET
RIM
SMSC
Corporation)
TMC
(Toyo Microsystems
ARCNET
HUB
HUB
HUB
HUB
HUB
HUB
HUB
HUB
4
HUB
200
1
2
100
93
HUB
4
HUB
HUB
HUB
HUB
HUB
HUB
HUB
HUB
HUB
HUB
HUB
HUB
HUB
ARCNET
HUB
HUB
HUB
HUB
HUB
HUB
HUB
ARCNET LAN
HUB
HUB
HUB
HUB
HUB
EIA-485
RG-62/U
BNC "T"
HUB
HUB
/
HUB
HUB
HUB
HUB
:
RJ-11
RJ-11
(Multidrop):
T
ARCNET
ARCNET
HUB
ARCNET
BNC
HUB
RG-59/u
HUB
HUB
RG-62/u
RC-62/u
HUB
BNC T
1
2
3
HUB
#24
BALUN
HUB
(UTP)
IBM
UTP
#24 AWG
HUB
BALUN
BALUN
RJ-11
BALUN
RJ-11
HUB
SMA ST(tm)
50/125 m 62.5/125 m
100/140 m
62. 5/
125 m
62.5/125 m
850nm
SMA
ST
ST
BNC
SMA
SMA
14
1300nm
1300nm
850nm
EIA-485 EIA-485
RJ-11
HUB
EIA-485
EIA-485
EIA-485
EIA-485
EIA-485
ARCNET
HUB
ARCNET
RG-62/u
ARCNET
RG-62/u
RG-59/u
75
RG-59/u
BNC
T
RS-485
UTP
IBM
62.5/125
tight buffering
loose buffering
ARCNET
ARCNET
93
ARCNET
RG-62/u
HUB
HUB
RG-62/u
HUB
ARCNET
P1 P2
2.5Mbps
P1 P2
100ns
1
P2
P1
P2
0
P1
P1 P2
200ns
P2
ARCNET
400ns
P1 P2
P1
P1
100ns
200ns
P1
P2
P2
200
ARCNET
2.5MHz
2.5MHz
5MHz
5MHz
P1 P2
93
BNC
BNC
RG-62/u
610
2000
305
2
BNC
6
T
1000VDC
BALUN
BALUN
MUX LAB 10070
BNC
RJ-11
BALUN
RJ-
11
BALUN
RJ-11
BALUN
HUB
1
1
2
LINE-
2
3
4
LINE+
3
4
1
2
LINELINE+
3
4
2
LINE5
5
6
6
6
LINE+
HUB
7
HUB
8
HUB
HUB
ARCNET
COM20020 COM20022 COM20051
2.5Mbps COM20019
ARCNET
Prescaler
HUB
HUB
210019
19Kbps
20022
10Mbps
2.5Mbps
ARCNET
COM20022, COM20051
COM20019, COM20020,
ARCNET
Backplane
---
P1
P1
P2
200ns P2
RXin
P1
RXin
P1
P1
RXin
EIA-485
TXEN
EIA-485
EIA-485
TXEN
ARCNET
TXEN
E I A-485
Backplane
ARCNET
EIA-485
E I A-485
backplane
ARCNET
backplane
ARCNET
TXEN
ARCNET
E I A- 48 5
ARCNET
EIA-485
ARCNET
EIA-485
MAC
EIA-485
SMSC
ARCNET
EIA-485
Standard MicroSystems Corporation
P1
EIA-485
ARCNET
EIA-485
100~120
STP
UTP
ARCNET
OFF
(SMsC)
810
1600
274
900
17
+/-7V
EIA-485
1000V
SMSC
EIA-485
1
EIA-485
213
700
HUB
700~900
13
213~274
HUB
EIA-485
HUB
RG-62/u
BNC T
93
RJ-11
RJ-11
ARCNET
EMI
RFI
ARCNET
50 62.5
100
850nm
3
1300nm
14
dB
1m
0.5~1dB
1500m
62.5
3.5dB/1000m
5.25dB
0.5dB
4dB
6.25dB
10.
5.15dB
3dB
0
100
ARCNET
HUB
HUB
ARCNET
HUB
ARCNET
ARCNE T
ARCNET
HUB
ARCNET
HUB HUB
HUB
HUB
ANSI/ATA878.1--ARCNET
ATA
2.5Mbps
ARCNET
ARCNET
ARCNE T
ARCNET
/
ARCNET
ARCNET
HUB
ARCNET
2.5Mbps
400ns
1
0
<SD>
1 1 1 1 1 1 (6
)
ARCNET
1
<RSU>
1 1 1 1 1 1 1 1 0 (9
)
<ISU>
1 1 0 d0 d1 d3 d4 d5 d6 d7 (11
ISU
3
<SOH>
<ENQ> FBE
0
110
01
0 85
<ACK>
0
86
<NAK>
<EOT>
0
15
0 04
<NID>
0
)
8
FBE
01
0
ISU
(
FF
NID
MAC
<SID>
0
<DID>
01
0
0
01
FF
0
MAC
FF
MAC
<CP>
(0
252
CP
256
<SC>
507
0 01
ISU
ISU
CP
0
ISU
FF
SC
SC
ISU Datapoint
ATA ARCNET
<...DATA...>
0 252
ISU
ISU
<FCS>
CRC
256
253
254
0
0 0000
(CRC-
507
ISU
255
0
ffff
)
16
2
ISU
ARCNET
ARCNET
ITT
<SD><EOT><NID><NID>
FBE
FBE
<SD><ENQ><DID><DID>
ACK
<SD><ACK>
NAK
<SD><NAK>
PAC
<SD><SOH><SID><DID><DID><CP><SC><...DATA...>
<FCS>
NID
FBE
DID
FBE
--Free Buffer Enquiry
SID
SID
FBE-
ARCNET
CP
SC
ARCNET
SC
0
ARCNET
80
0
0 80
80
Datapoint
765
RECON---
RSU
<RSU><RSU>------- <RSU> 765
RSUs
ARCNET
ARCNET
ARCNET
2.5Mbps
ARCNET
5Mbps
2.5Mbps ARCNET
12.6 s
4ns/m
5ns/m
5.5ns/m
Tpt
Tpt
31 s
Tpm
31 s
Tpd
Trp
15.6 s
2
(31 s)
ARCNET
Trp
Trp
75.6 s
Trc
2 s
Tac
82.4 s
ARCNET
Hub
Tpt
Tpm
8
85m
170m
HUB
HUB
Tpm
Tpt
320ns
Tpt=Tpm=170(4)+320=1.0 s.
29.2 s
8
233.6 s
100
100
T = 145.4+4.4*100+Tpt+4*Tpm = 145.4+440+1+4=590.4 s
7
204.4 s
794.8 s
ARCNET
22000
6.7
RG-62/u
4
HUB
6.7
75.6 s
12.6 s
31 s
6.7
10
HUB
ARCNET
ARCNET
ET1 ET2
ARCNET
75.6 s (ET1=ET2=1)
NID
2.5 Mbps ARCNET
ARCNET
ARCNET
HUB
31
OSI
s
Open Systems Interconnection
ARCNET
IEEE
MAC
ARCNET
ARCNET
Collapsed Stack or Null Stack ---
ControlLink --MAC
IEEE802.2
(SMsC)
LLC
ControlLink
NetBIOS --- NetBIOS ATA
IBM Microsoft
NetBIOS
NetBIOS
ARCNET
NetBIOS
TCP/IP
IPX/SPX
Ne tBEUI ---
Ne tBIOS
Ne tBEUI
NetBIOS
Microsoft
TCP/IP --- TCP/IP
TCP
IP
ARCNET
Internet
TCP/IP
Internet
IPX/SPX---- IPX/SPX
Novell
M ic r o sof t
NWLINK
Novell NetWare
I PX/SPX
NDIS --dows 98
XNS
Microsoft
3Com
Windows for Workgroups Windows 95 WinWindows NT
ARCNET
NDIS
IP
NDIS
32
NetBEUI IPX/SPX TCP/
NDIS4.0
Windows 95B
ODI --- ODI
Novell NetWare
ODI
Novell
Microsoft
Microsoft Windows for Workgroups3.11
ARCNET
OEM
NT4.0
1987
A TA
ARCNET
ARCNET NetBIOS
ATA
ATA
ARCNET
A TA
ARCNET
ARCNET
ATA
ANSI
ARCNET
ANSI
ATA878.1 2.5Mbps
ARCNET
ATA
RFC 1121 RFC---Request
for comments
ARCNET
ATA878.2
ARCNET
ARCNET
ATA
ARCNET
ATA
ARCNET
ATA
ata@ar c ne t. c om
www.arcnet.com
/
"ARCNET Designer's Handbook", Document 61610,
Datapoint Corporation, 1983
"ARCNET Cabling Guide", Document 51087,
Datapoint Corporation, 1988
"ARCNET Factory LAN Primer",
Contemporary Control Systems, Inc., 1987
"RS-485 Cabling Guidelines for the COM 20020",
Technical Note 7-5, Revision E, Standard Microsystems
Corporation, May 1994
"ARCNET's Already Flexible Physical Layer Enhanced with
Several EIA-485 Varients",
George Thomas, Fieldcomms USA, June 1997
"Microsoft Developer Network CD",
Microsoft Corporation, January 1998