Mitsubishi Electric MELSEC iQ-R Series Manual page 26

Temperature control modules
■Q compatible mode
A module in operation in Q compatible mode also allows online module change. The newly replaced temperature control
module starts up in Q compatible mode.
■Precautions
• Even if pre-recorded data are set to the buffer memory in the newly replaced module and control is restarted, the module
cannot restart the control in the same control condition. The reason is because the settings of following areas are cleared
when control is stopped.
• 'CH Manipulated value (MV)' (buffer memory address: Un\G403, Un\G603, Un\G803, Un\G1003)
• 'CH Manipulated value for heating (MVh)' (buffer memory address: Un\G403, Un\G603, Un\G803, Un\G1003)
• 'CH Manipulated value for cooling (MVc)' (buffer memory address: Un\G408, Un\G608, Un\G808, Un\G1008)
• For example, if an upper limit alert with standby is set and the alert occurs before an online module change, the module
goes into the standby state and the alert does not occur when the control is restarted after the online module change.
• Following are precautions for an online module change of the temperature control module where the multiple module
interaction function is enabled.
• When performing online module change of the temperature control module which is set as master, all the temperature control modules using the
multiple module interaction function must be in the setting mode. Do not perform online module change while any temperature control module using
multiple module interaction function is performing a control. If the online module change is performed, the module operation cannot be guaranteed.
• When a online module change is performed to the temperature control module which is set as slave, the multiple module interaction function cannot be
used. To enable the multiple module interaction function, reset the CPU module or remote head module, or turn on the power supply of all the
temperature control modules using the multiple module interaction function again.
Simple Motion modules
■Module-specific backup parameter
The module-specific backup parameter is not provided, and thus no data is backed up.
■Backup and restoration of data in the module
Before starting online module change, carry out back up and restoration using the simple motion module setting function.
Perform back up on the module that is subject to online module change; perform restoration on the new module to be
mounted in online module change. For the restoration, prepare a separate system and perform restoration there.
For the methods of backing up and restoring data in a module, refer to "Simple Motion Module Setting Help" of the
engineering tool.
■Precautions
• Performing online module change while the simple motion module is in operation causes an axis error, which stops the
operation. Before online module change, halt the operation and then make sure that the machines are not working.
• After turning on 'Module remove request flag' (SM1602), be sure to remove the simple motion module and mount the
module. Otherwise, an error would occur in the CPU module or remote head module when 'Module recognition request flag'
(SM1606) is turned on.
High-speed counter modules
■Module-specific backup parameter
The module-specific backup parameter is not provided, and thus no data is backed up.
3 REPLACEMENT PROCEDURE
24
3.1 Specifications