Omron CJ - REFERENCE MANUAL 07-2009 Reference Manual page 59

Settings for Sending FINS Commands
Devices on Different Networks
Example
Address level
Network address SNA
Node address SA1
Unit address SA2
Unit Addresses
FINS command by Host Link communications, then put the source ad-
dress in the message.
2. Set the transmission destination address in the control code (C) operand
if sending the FINS command with CMND(490). If sending the FINS com-
mand by Host Link communications, then put the destination address in
the message.
Node address 1
PLC PLC
Network address 1
Source address (See note 1.)
FINS command
symbol
01 Hex
01 Hex
00 Hex
Note 1. The transmission source address will be automatically incorporated into
the frame if the FINS command is sent with CMND(490). If sending the
FINS command by Host Link communications, then put the source ad-
dress in the message.
2. Set the transmission destination address in the control code (C) operand
if sending the FINS command with CMND(490). If sending the FINS com-
mand by Host Link communications, then put the destination address in
the message.
Set the unit address for the following purposes:
• To identify the Unit when there is more than one device connected at the
same node on a network.
• To identify the type of device (CPU Unit, CPU Bus Unit, etc.) at the desti-
nation.
Note The meanings of FINS commands will vary depending on the Unit at the des-
tination even when the commands have the same command code. This is why
the Unit at the destination must be identified by the unit address.
Unit addresses are as follows:
• CPU Unit:
• CPU Bus Unit: Unit number + 10 hex
• Special I/O Unit:
• Inner Board:
• Computer:
• Communications Unit with the specified node address connected to net-
work with the specified network address (Controller Link or Ethernet):
PLC
Network address 2
Example value FINS command
DNA
DA1
DA2
00 Hex
Unit number + 20 hex
E1 Hex (CS Series only)
01 Hex
FE Hex
Section 3-4
Node address 5
PLC
For CPU Unit
(00 Hex)
Destination address
(See note 2.)
Example value
symbol
02 Hex
05 Hex
00 Hex
37