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Network Instructions Section 3-24
Serial Port Addresses:
• CS/CJ-series Serial Communications Unit ports
Port 1: 80 hex + 4 × unit number
Port 2: 81 hex + 4
× unit number
• CS-series Serial Communications Board ports
Port 1: E4 hex (228 decimal)
Port 2: E5 hex (229 decimal)
• CS/CJ-series CPU Unit ports
Peripheral port: FD hex (253 decimal)
RS-232C port: FC hex (252 decimal)
• CP1H CPU Unit and CP1L M (30 or 40 I/O points) CPU Unit Serial Com-
munications Option Board ports
Port 1: FD hex (253 decimal)
Port 2: FC hex (252 decimal)
• CP1L L (14 or 20 I/O points) CPU Unit Serial Communications Option
Board port
Port 1: FC hex (252 decimal)
Note Serial port 1 is the port on the Serial Communications Option Board mounted
in option slot 1 and serial port 2 is the port on the Serial Communications
Option Board mounted in option slot 2.
Network Communications
Patterns
The following examples show three types of network communications: com-
munications from a PLC to other devices in a network, communications from a
PLC to serial ports on other devices in a network, and communications to a
host computer connected by a Host Link.
Communications to Another Device in the Network
The following example shows communications from a PLC to devices in
another PLC (the CPU Unit, CPU Bus Unit, or Inner Board). For more details,
refer to the operation manual for the network (Controller Link or Ethernet)
being used.
CS-series Inner Board
CS/CJ-series CPU Unit
CS/CJ-series
Serial Communications Unit
Serial port 1
Serial port 2
Serial port 1
Serial port 2
Serial port 2 (Peripheral)
Serial port 1 (RS-232C)
CP1H
CPU Unit
Serial port 1
Serial port 2
Unit number0123456789ABCDEF
Hexadecimal 8084 88 8C90 94 98 9CA0A4A8ACB0B4B8BC
Decimal 128 132 136 140 144 148 152 156 160 164 168 172 176 180 184 188
Unit number0123456789ABCDEF
Hexadecimal 8185 89 8D91 95 99 9DA1A5A9ADB1B5B9BD
Decimal 129 133 137 141 145 149 153 157 161 165 169 173 177 181 185 189
PLC to PLC
To Inner Board
To CPU Unit
To CPU
Bus Unit
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