Additional Information
For the CS/CJ-series CPU Units, the FINS command is issued to the network of the FINS net-
work Communications Unit that has the smallest unit number.
FINS command
EtherNet/IP Unit (Unit number 0)
DeviceNet Unit (Unit number 1)
Controller Link Unit (Unit number 2)
CJ-series
CPU Unit
No settings for the
local network table
Unit number
0
1 2
1
Local network table
Network
address
*1
*1. When the FINS command specified with network address 0 and node address n is issued to a CPU
Unit with no local network table specified, the FINS command is issued to the FINS network of the
lowest unit number.
When the opposite unit is the CS/CJ-series CPU Unit and 0
is specified for the destination net-
work address, the communication may or may not be possible as described below.
Communication is possible when network number 0 is specified
• When only one FINS network Communications Unit is connected to the opposite CS/CJ-ser-
ies CPU Unit.
• When multiple FINS network Communications Units are connected to the opposite CS/CJ-
series CPU Units, and the FINS network Communications Unit is connected to the CS/CJ-
series CPU Unit that has the smallest unit number.
In this case, the routing table setting is not required for the NX-series CPU Unit.
Ethernet
FINS command
Response frame
NX-series CPU Unit
CS/CJ-series CPU Unit
Unit number 0
Unit number 1
Communication is not possible when network number 0 is specified
• When multiple FINS network Communications Units are connected to the opposite CS/CJ-
series CPU Units, and the FINS network Communication Unit is connected to a CS/CJ-series
CPU Unit other than the unit that has the smallest unit number
.
In this case, routing table setting is required for both the NX-series CPU Unit and the CS/CJ-
series CPU Unit.
Appendices
A-3
NX-series CPU Unit FINS Function User's Manual (W596)
A-1 Difference Between CS/CJ-series and NX-series in FINS Routing
A
A-1-1 Communication When 0 Is Specified for the Destination Network Address
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