Serial Plc Links (Cj1M Cpu Units Only) - Omron SYSMAC CS/CJ Series Programming Manual

Serial Communications
PLC Setup
Communications Programming
port Console setting
address
Peripheral port 144
Bits:
145
Bits:
150
Bits:
RS-232C port 160
Bits:
161
Bits:
166
Bits:
PT System Menu
1,2,3...
6-3-4

Serial PLC Links (CJ1M CPU Units Only)

Overview
270
Name
Serial communica-
tions mode
8 to 11
Baud rate
0 to 7
NT Link mode
maximum unit
0 to 3
number
Serial communica-
tions mode
8 to 11
Baud rate
0 to 7
NT Link mode
maximum unit
0 to 3
number
Note Set the baud rate to 115,200 bps when making settings with the CX-Program-
mer.
Set the PT as follows:
1. Select NT Link (1:N) from Comm. A Method or Comm. B Method on the
Memory Switch Menu under the System Menu on the PT Unit.
2. Press the SET Touch Switch to set the Comm. Speed to High Speed.
Serial PLC Links are supported by CJ1M CPU Units only. They allow data to
be exchanged among CJ1M CPU Units via the built-in RS-232C ports without
requiring special programming. Words are allocated in memory in the Serial
PLC Link Words (CIO 3100 to CIO 3199). RS-232C connections can be used
between CPU Units, or RS-422A/485 connections can be used by connecting
RS-232C-to-RS-422A/485 converters to the RS-232C ports. CJ1W-CIF11
RS-422A Converters can be used to convert between RS-232C and RS-
422A/485.
A PT that is set for NT Link (1:N) communications can also be used together
on the same network. The polled PT uses the network to communicate in an
NT link (1:N) with the polling CPU Unit. When a PT is connected, however, the
addresses in the Serial PLC Link Words corresponding to the PT's unit num-
ber are undefined.
Settings Default values
contents
02 Hex: NT Link 00 Hex: Host Link
(1:N mode)
00 to 09 Hex: 00 Hex: Standard
Standard NT Link NT Link
0A Hex: High-
speed NT Link
(see note 1)
0 to 7 Hex 0 Hex (Max. unit
No. 0)
02 Hex: NT Link 00 Hex: Host Link
(1:N mode)
00 to 09 Hex: 00 Hex: Standard
Standard NT Link NT Link
0A Hex: High-
speed NT Link
(see note 1)
0 to 7 Hex 0 Hex (Max. unit
No. 0)
Section 6-3
Other conditions
Turn ON pin 4 on
the CPU Unit DIP
switch.
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Turn OFF pin 5 on
the CPU Unit DIP
switch.
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