一套西门子300的PLC控制的水处理系统,这两天不定期的CPU报故障,一故障一部分运行中的设备都会回到工序的第一步状态,有些泵会运行中忽然重启。 CPU故障是红灯常亮,重新下装硬件组态以后故障灯会消除,然后能稳定运行十几个小时,又会出现上述状况。如果带着CPU故障运行就会频繁出现设备起停故障。 下面是S7的记录 —————————————————— Diagnostic buffer of module CPU 315-2 PN/DP Order No./ Description Component Version 6ES7 315-2EH13-0AB0 Hardware 1 - - - Firmware V 2.3.4 Boot Loader Firmware expansion A 6.11.8 Rack: 0 Slot: 2 Event 1 of 10: Event ID 16# 38C4 Distributed I/Os: station return Address of the affected DP slave: station number: 8 DP master system ID: 1 Log. base address of the DP slave: Input address: 2035 Log. base address of the DP master: 2047 Requested OB: Rack failure OB (OB86) Priority class: 26 External error, Outgoing event 11:33:29:223 pm 12/28/95 Event 2 of 10: Event ID 16# 2943 I/O access error, writing P area, word access, Access address: 298 Requested OB: I/O access error OB (OB122) Priority class: 1 External error, Incoming event 11:33:29:105 pm 12/28/95 Event 3 of 10: Event ID 16# 2943 I/O access error, writing P area, word access, Access address: 296 Requested OB: I/O access error OB (OB122) Priority class: 1 External error, Incoming event 11:33:29:105 pm 12/28/95 Event 4 of 10: Event ID 16# 2943 I/O access error, writing P area, word access, Access address: 294 Requested OB: I/O access error OB (OB122) Priority class: 1 External error, Incoming event 11:33:29:104 pm 12/28/95 Event 5 of 10: Event ID 16# 2943 I/O access error, writing P area, word access, Access address: 292 Requested OB: I/O access error OB (OB122) Priority class: 1 External error, Incoming event 11:33:29:104 pm 12/28/95 Event 6 of 10: Event ID 16# 2943 I/O access error, writing P area, word access, Access address: 290 Requested OB: I/O access error OB (OB122) Priority class: 1 External error, Incoming event 11:33:29:104 pm 12/28/95 ———————————————————— —————————————————————— 貌似每次出的问题都不一样,DP线也重接过,模块也重新固定过 真的不知道问什么会出这种错了 实在不行了,请高人帮忙指点一下 这个是硬件组态的图:
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参考资料:S7-300HELP