Mitsubishi Electric MELSEC iQ-R Series Manual page 35

Module selection
The following shows the procedure to select a module. In this procedure, select an online module change target module.
Module selection
Set the position of the replacement
target module in 'Module selection
(base unit No.)' (SD1600).
Set the position of the replacement
target module in 'Module selection
*1
(slot No.)' (SD1601).
Turn on 'Module selection request
flag' (SM1600).
Check that 'Online module change
status flag' (SM1617) is on.
Module selection
completion (2) is stored in
'Online module change
progress status' (SD1617).
Yes
The value in
'I/O No. of the module
being changed online'
(SD1602) corresponds to
the start I/O number of the
replacement target module.
Yes
Continue the online
module change.
Yes
To "Online module change"
*1 To specify a two-slot occupied module, set the right-side slot number of the slots on which the module is mounted.
*2 The READY LED on the CPU module (RUN LED on the remote head module) and the RUN LED on the replacement target module
flash (interval of 400ms). However, if the replacement target module has a failure, the RUN LED on the module may not flash. Perform
the following operations to continue the online module change.
*2
No
No
No
3.4 Changing a Module by Controlling Special Relays and Special Registers
Check the items of troubleshooting
No. 1, and take the action.
Check the items of troubleshooting
No. 2, and take the action.
To "Cancel of module
selection"
3 REPLACEMENT PROCEDURE
3
33