Omron SYSMAC CJ - REFERENCE MANUAL 01-2008 Reference Manual page 1092

Network Instructions
a) Set the source unit address (bits 00 to 07 of C+2) to the unit address
of the CPU Unit or Serial Communications Unit/Board and set the se-
rial port number (bits 08 to 11 of C+1) to 1 for port 1 or 2 for port 2.
Unit address
(C+2, bits 00
to 07)
00 hex CPU Unit
10 hex + unit Serial Communications
number Unit (CPU Bus Unit)
E1 hex Serial Communications
Board (Inner Board)
(CS Series only)
b) Set the source unit address directly into bits 00 to 07 of C+2. In this
case, set the serial port number in bits 08 to 11 of C+1 to 0 for direct
specification.
Serial Communication Unit ports
Port Port's unit address
Port 1 80 hex + 4
Port 2 81 hex + 4
Serial Communication Board ports
Port Port's unit address
Port 1 E4 hex (228 decimal)
Port 2 E5 hex (229 decimal)
CPU Unit ports
Port Port's unit address
Peripheral FD hex (253 decimal)
RS-232C FC hex (252 decimal)
4. When specifying the serial port without a routing table for the serial gate-
way function (conversion to host link FINS), set the serial port's unit ad-
dress in the source network address byte.
5. The unit address indicates the Unit, as shown in the following table.
Unit
CPU Unit
CPU Bus Unit
Special I/O Unit (except C200H-
series Special I/O Units)
Inner Board (CS Series only)
Computer
Unit Serial port number
(C+1, bits 08 to 11)
1 hex
2 hex
1 hex
2 hex
1 hex
2 hex
Example: Unit number = 1
unit number 80 + 4 1 = 84 hex (132 decimal)
unit number 81 + 4 1 = 85 hex (133 decimal)
Unit address setting
00 hex
10 hex + unit number
20 hex + unit number
E1 hex
01 hex
Section 3-25
Serial port
Built-in RS-
232C port
Peripheral
port
Port 1
Port 2
Port 1
Port 2
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