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FX Series PLC User's Manual - Data Communication Edition
Common Items
3.4.3
Limitation when ch1 and ch2 are used at the same time
When using ch1 and ch2 at the same time, available communication type combinations are limited. For
details, refer to the table below.
When a CF card special adapter, FX
ENET-ADP is used, one communication port (1ch) is occupied. However, the occupied communication port
does not apply any restrictions to the combination of communication functions when ch1 and ch2 are used at
the same time.
Communication
channel: ch2
Communication
special adapter
MODBUS
communication
MODBUS
communication
N:N Network
Parallel link
Computer link
Inverter
communication
Non-protocol
communication
*1
(RS instruction)
Non-protocol
communication
(RS2 instruction)
Programming
communication
Remote
*2
maintenance
*1.
Ch2 cannot be set for non-protocol communication (RS instruction).
*2.
When using remote maintenance on ch2, use GX Works2 or GX Developer.
Example 1:
When "parallel link" is set for ch1, the "N:N Network" cannot be set for ch2.
Example 2:
When "computer link" is set for ch1, the "N:N Network" can be set for ch2.
-8AV-BD, FX
3U
Communication channel: ch1
Communication
Expansion
special adapter
board
N:N Network Parallel link
(Example 1)
(Example 2)
3 Outline of Communication Setting in the FX Series
3.4 Extension of Ports (For FX3G, FX3GC, FX3U, FX3UC)
-8AV-BD, FX
-4EX-BD, FX
3G
3G
R D A
R D
R D B
SD A
SD
SD B
SG
Expansion
board
Communication setting for ch1
Non-protocol
Computer
Inverter
communication
communication
link
(RS instruction)
For applicable versions of GX Works2 and GX Developer,
refer to I. Remote Maintenance Subsection 1.4.1 or 1.4.2.
-2EYT-BD or the FX
3G
FX
/FX
/FX
/FX
3G
3GC
3U
3UC
: Applicable, : Not applicable
Non-protocol
Programming
Remote
communication
communication
maintenance
(RS2 instruction)
A
-
3U
B
C
D
PLC
E
F
G
H
I
Apx.A
A-75
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