CPU414FH系统故障安全模块报警，进行热插拔模块时，造成机组停机。从CPU诊断报警Parameter assignment error,是什么原因？S7-400系统不支持热插拔吗？

诊断如下：

Event 25 of 1500: Event ID 16# 5961

Parameter assignment error in parameters for distributed S7 modules

Input address: 24 of the module with parameter assignment errors

Error type: Slot configured for CPU is not occupied or is occupied by a place holder, or a station has failed or the switched I/O system has lost its redundancy.

Data record number: 128

Operating mode: RUN

Event occurred in the master CPU in rack 0

External error, Incoming event

10:59:51.845 AM 10/16/2018

Event 26 of 1500: Event ID 16# 5961

Parameter assignment error in parameters for distributed S7 modules

Input address: 8 of the module with parameter assignment errors

Error type: Slot configured for CPU is not occupied or is occupied by a place holder, or a station has failed or the switched I/O system has lost its redundancy.

Data record number: 128

Operating mode: RUN

Event occurred in the master CPU in rack 0

External error, Incoming event

10:59:51.830 AM 10/16/2018

Event 27 of 1500: Event ID 16# 5961

Parameter assignment error in parameters for distributed S7 modules

Input address: 8184 of the module with parameter assignment errors

Error type: Slot configured for CPU is not occupied or is occupied by a place holder, or a station has failed or the switched I/O system has lost its redundancy.

Data record number: 250

Operating mode: RUN

Event occurred in the master CPU in rack 0

External error, Incoming event

10:59:51.828 AM 10/16/2018