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Use Ans (small Type) Module As Spare Parts For A (large Type) Computer Link Module - Mitsubishi Electric Artisan MELSEC-Q Series Manual

General-purpose programmable controllers, large/small.
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6.1 Use AnS (Small Type) modules as spare parts for existing A (Large Type) Series modules

6.1.2 Use AnS (Small Type) module as spare parts for A (Large Type) computer link module

Solution and Benefit
• If the computer link module malfunctions but A (Large Type) Series spare parts are not available,
the AnS (Small Type) computer link module can be installed on the A1ADP adapter and used as a
replacement, allowing the system to recover quickly.
• If the A (Large Type) computer link module is not available when the system requires an
additional module, the AnS (Small Type) computer link module can be installed on the A1ADP
adapter and used as a spare part.
The following is an example of replacing an A (Large Type) computer link module with AnS (Small Type)
computer link modules using the A-A1S module conversion adapter.
● Instructions
(1) The A (Large Type) computer link modules have two channels (RS232C and RS422), whereas the AnS
Series computer link modules only have one. Therefore, if two channels are used, two modules are
needed.
(2) A program modification is not required if:
• The AnS module set to the No-protocol mode is mounted on the same slot as the existing module.
• The AnS module set to the Dedicated protocol mode is mounted on the empty slot.
(This is because the No-protocol mode requires a transmission program but the Dedicated protocol
mode does not.)
(1) System configuration example
Current configuration
A35B
After replacement
A35B
Channel set to
No-protocol
mode
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Module to be replaced
Replace
Channel set to
Dedicated protocol
mode
125
(1) Computer link module options
Model
A1SJ71UC24-R2
A1SJ71UC24-R4
A
1ADP-SP
A-A1S
conversion
adapter
1-channel
module
A1SJ71UC24-R2 or
A1SJ71UC24-R4
set to No-protocol mode
(Mount this module on the same
slot as the existing module
(AJ71UC24))
Outline
RS232C: 1 channel
RS422/485: 1 channel
2-channel
module
A
1ADP-SP
A-A1S
conversion
adapter
1-channel
module
A1SJ71UC24-R2 or
A1SJ71UC24-R4
set to Dedicated protocol mode
(Mount this module on the empty slot)

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