Omron CJ - REFERENCE MANUAL 07-2009 Reference Manual page 61

Settings for Sending FINS Commands
Summary of Addresses
• Example 2: Serial Communications Unit
Serial Communications Unit
Serial port 1
Serial port 2
Serial port on Unit
Serial port 1
Serial port 2
Unit addresses for serial port 1:
Unit number 0 1 2
Hexadecimal 80 84 88
Decimal 128 132 136 140
Unit addresses for serial port 2:
Unit number 0 1 2
Hexadecimal 81 85 89
Decimal 129 133 137 141
The three addresses used in FINS commands can be summarized as follows
(refer to the following diagram):
Network Address
An address that identifies the entire network. All nodes on the same network
have the same network address.
Node Address
An address that identifies an individual node on a network, such as a PLC or
host computer.
Serial port's unit address
80 hex + 04 hex × unit num-
ber
81 hex + 04 hex × unit num-
ber
3 4 5 6 7 8 9 A
8C 90 94 98 9C A0 A4 A8
144 148 152 156 160 164 168
3 4 5 6 7 8 9 A
8D 91 95 99 9D A1 A5 A9
145 149 153 157 161 165 169
Section 3-4
Example: Unit number 1
80 hex + 04 hex × 1 = 84
hex (132 decimal)
81 hex + 04 hex × 1 = 85
hex (132 decimal)
B C D E F
AC B0 B4 B8 BC
172 176 180 184 188
B C D E F
AD B1 B5 B9 BD
173 177 181 185 189
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