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Mitsubishi Electric MELSEC iQ-R Series Manual page 21

Online module change
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Access to the module
The following shows the method for accessing each online module.
■Changing a module by controlling special relays and special registers
• I/O modules
: Executed, : Not executed
Procedure
I/O refresh
Input (X)
Checks before
replacement
Module selection
*1
Module change
activation
*1
Module removal
*1
Module mounting
*1
Module recognition
Module control start
*1 The data is held.
• Intelligent function module
: Executed, : Not executed
Procedure
I/O refresh
Input
(X)
Checks before
replacement
Module selection
*2
Module change
activation
*2
Module removal
*2
Module mounting
Module recognition
Module control start
*2 The data is held.
Direct access
Output
Input
Output
(Y)
(DX)
(DY)
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
Module
Intelligent
dedicated
auto
Output
instruction
refresh
(Y)
*2
*2
*2
FROM/TO
Instruction using the
instruction
module access
device
Direct access
FROM/TO
instruction
Input
Output
(DX)
(DY)
3 REPLACEMENT PROCEDURE
Device
Monitor
test
Instruction
Device
Monitor
using the
test
module
access
device
3.1 Specifications
3
19

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