If the parameter is set, the following number of modules can be mounted at maximum.
- Q00UJ/Q00U/Q01UCPU: Up to 2 modules
- Q02UCPU: Up to 4 modules
- Universal model QCPU modules other than above: Up to 8 modules
If settings are made by dedicated instructions, the maximum mountable number of QJ61BT11N modules can be used as long as the range of the I/O points of the CPU module is not exceeded.