Mitsubishi Electric FX3U-232-BD - Limitation When Ch1 and Ch2 Are Used at the same Time

A-75
FX Series PLC User's Manual - Data Communication Edition
Common Items
3 Outline of Communication Setting in the FX Series
3.4 Extension of Ports (For FX3G, FX3GC, FX3U, FX3UC)
A
Common Items
B
N:N Network
C
Parallel Link
D
Computer Link
E
Inverter Communication
F
Non-Protocol Communication (RS/RS2 Instruction)
G
Non-Protocol Communication (FX
2N
-232IF)
H
Programming Communication
I
Remote Maintenance
Apx.A
Discontinued models
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
3U-8AV-BD, FX3G-8AV-BD, FX3G-4EX-BD, FX3G-2EYT-BD or the FX3U-
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.
*1. Ch2 cannot be set for non-protocol communication (RS instruction).
*2. When using remote maintenance on ch2, use GX Works2 or GX Developer.
For applicable versions of GX Works2 and GX Developer,
refer to I. Remote Maintenance Subsection 1.4.1 or 1.4.2.
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.
RD
RD A
RD B
SD A
SD B
SG
SD
Communication setting for ch1
N:N Network Parallel link
Computer
link
Non-protocol
communication
(RS instruction)
Non-protocol
communication
(RS2 instruction)
Remote
maintenance
N:N Network
Parallel link
Computer link
Communication setting for ch2
: Applicable, : Not applicable










(Example 1)







(Example 2)















   

   
  
   
   
   
   
   
Communication channel: ch1
Expansion
board
Expansion
board
FX
3G /FX 3GC /FX 3U /FX 3UC PLC
Communication
channel: ch2
Communication
special adapter
Communication
special adapter
MODBUS
communication
      
MODBUS
communication
Inverter
communication
Non-protocol
communication
(RS instruction)
*1
Non-protocol
communication
(RS2 instruction)
Programming
communication
Remote
maintenance
*2
Inverter
communication
Programming
communication