Limitation When Channel 1 And Channel 2 Are Used At The Same Time - Mitsubishi FX3U Series User Manual

FX Series Programmable Controllers
3U
User's Manual - MODBUS Serial Communication Edition
3.3

Limitation when Channel 1 and Channel 2 are used at the same time

When using Channel 1 (ch1) and Channel 2 (ch2) at the same time, the available communication type
combinations are limited. For more details, refer to the table below.
Communication
channel: ch2
Communication
special adapter
MODBUS
Serial Com-
munication
-
MODBUS Serial
Communication
(Example 1)
N:N Networking
(Example 2)
Parallel Link
Computer Link
Inverter
Communication
Non-protocol
Communication
(RS2 instruction)
Programming
Communication
Remote
*2
Maintenance
: Applicable
-: Not applicable
*1. Ch2 cannot be set for non-protocol communication using the RS instruction.
*2. When using remote maintenance on ch2, use GX Developer Ver. 8.18U or later.
Example1:
When using "MODBUS Serial Communication" on ch1, "MODBUS Serial Communication" can not be set on
ch2.
Example2:
When using "MODBUS Serial Communication" on ch1, "N:N Networking" can be used on ch2.
→ For more details on using N:N Networking and MODBUS Serial Communication, refer to Section
Communication channel: ch1
RDA
RD
RDB
SDA
SD SDB
SG
Communication
Expansion
special adapter
board
Communication Setting on Ch1
N:N Computer
Parallel Link
Networking Link
- -
- -
3.3 Limitation when Channel 1 and Channel 2 are used at the
FX PLC
3U
Non-protocol Non-protocol
Inverter Com- Communica- Communica-
munication tion (RS tion (RS2
instruction) instruction)
3 System Configuration
Programming
Remote
Communica-
Maintenance
tion
-
5.3.
10
19
1
2
3
4
5
6
7
8
9