Mitsubishi Electric MELSEC iQ-R Series Manual page 42

■I/O modules with diagnostic functions
1.
Check that 'Module READY' (X1F) is off.
'Module READY' (X1F) turns off when the READY LED on the CPU module (RUN LED on the remote head module) that is
flashing (at 400ms intervals) turns on. To execute the initial setting using a program, design the program so that the initial
setting is executed when 'Module READY' (X1F) turns off. Do not design a program that executes the initial setting only in one
scan after the CPU module has started running. Otherwise, the initial setting is not executed.
2.
The online module change has been completed.
For details on the I/O signals and buffer memory areas of the I/O modules with diagnostic functions, refer to the following.
 MELSEC iQ-R I/O Module (With Diagnostic Functions) User's Manual (Application)
■A/D converter modules (for the R60AD4), D/A converter modules (for the R60DA4),
temperature input modules (for the R60TD8-G), temperature control modules (for the
R60TCTRT2TT2)
1.
Check that 'Module READY' (X0) is on.
'Module READY' (X0) turns on when the READY LED on the CPU module (RUN LED on the remote head module) that is
flashing (at 400ms intervals) turns on. To execute the initial setting using a program, design the program so that the initial
setting is executed when 'Module READY' (X0) turns on. Do not design a program that executes the initial setting only in one
scan after the CPU module has started running. Otherwise, the initial setting is not executed.
2.
The online module change has been completed.
For the online module change of other modules, also check as above. For details on the I/O signals and buffer memory areas
of each module, refer to the User's Manual (Application) for the module used.
■Simple motion modules (for the RD77MS16)
1.
Check that Synchronization flag [X1] is on.
Synchronization flag [X1] turns on when the READY LED on the CPU module (RUN LED on the remote head module) that is
flashing (at 400ms intervals) turns on. At this time, execute the initial setting or home position return as necessary. To execute
the initial setting or home position return using a program, design the program so that the initial setting or home position return
is executed when Synchronization flag [X1] turns on. Do not design a program that executes the initial setting or home
position return only in one scan after the CPU module has started running. Otherwise, the initial setting or home position
return is not executed.
2.
The online module change has been completed.
For the online module change of other simple motion modules, also check as above. For details on the I/O signals and buffer
memory areas of each simple motion module, refer to the User's Manual (Application) for the simple motion module used.
■High-speed counter modules (for the RD62P2)
1.
Check that 'Module READY' (X0) is on.
2.
The online module change has been completed.
For the online module change of other high-speed counter modules, also check as above. For details on the I/O signals and
buffer memory areas of each high-speed counter module, refer to the User's Manual (Application) for the high-speed counter
module used.
■Flexible high-speed I/O control modules (for the RD40PD01)
1.
Check that 'Module READY' (X0) is on.
2.
The online module change has been completed.
3.
The hardware logic control is stopped immediately after the online module change. To resume the hardware logic control,
turn on 'Hardware logic control start request' (Y4). Or perform [Online]  [Module operation]  [Hardware logic control
Start] from the configuration tool.
3 REPLACEMENT PROCEDURE
40
3.4 Changing a Module by Controlling Special Relays and Special Registers