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6FC5250-5BX30-3AH0
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6FC5250-5BX30-3AH0
PLC的故障类型有哪些？
外部设备故障
外部设备就是与PLC实际过程直接联系的各种开关、传感器、执行机构、负载等。这些设备发生故障，会直接影响PLC系统的控制功能。因此，维修PLC，首先要分清是外部设备故障，还是PLC本身故障。
系统故障
1）系统故障是影响PLC系统运行的全局性故障。
2）PLC系统故障可以分为固定性故障、偶然性故障。
3）故障发生后，可以重新启动使系统恢复正常，则就是偶然性故障。如果重新启动不能恢复，而是需要更换硬件或软件，系统才能够恢复正常，则认为是固定性故障。
硬件故障
PLC硬件故障主要指PLC系统中的模板、电路损坏而造成的故障。
软件故障
PLC软件故障包含软件错误、操作错误等。PLC软件故障一般可以通过PLC本身的自诊断测试功能或者软件来查看、检查。
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OLD STOCK! FENNER TRANTOURQUE 1-3/16" KEYLESS BUSHING 6202300
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OLD STOCK! FERRAZ SHAWMUT 2000VDC 400A FUSE LINK PROTISTOR D122SD20C400QF
OLD STOCK! FESTO 10BAR MAX CYLINDER DSEU-40-100-P-A 188597 B108
OLD STOCK! FESTO AEVU-40-25-A-P-A 23935528 145PSI
OLD STOCK! FESTO AEVU-40-25-A-P-A 23935528 145PSI INVERTED SHAFT
OLD STOCK! FESTO BOWL 104055 60C 140F
OLD STOCK! FESTO BUS CONTROL BLOCK IFB6-03
OLD STOCK! FESTO CLAMPING CARTRIDGE KP-4-80 KPE-4 178462 UN08
OLD STOCK! FESTO CONNECTING LINE 175714 KSMH-1-M8-2-M8
OLD STOCK! FESTO CONNECTING LINE 175715 SIM-M12-5GD-2,5-PU
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OLD STOCK! FESTO CURRENT BRIDGE CPA14-EB1-HR
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OLD STOCK! GARLOCK KLOZURE OIL SEAL 1-1/8X2 21158-0360 63X0360
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OLD STOCK! GAST AIR MOTOR REPLACEMENT PARTS KIT 3HDN1
OLD STOCK! GATES 1210X 30MM TAPE-LOCK BUSHING 78580530
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OLD STOCK! GATES MULTI SPEED BELT 2926V726 9800-0035
OLD STOCK! GATES MULTI-SPEED BELT 2322V601 9804-0025
OLD STOCK! GATES POLYCHAIN GT BELT 8M-1600-36
OLD STOCK! GATES POLYCHAIN GT BELT 8M-2000-36
OLD STOCK! GATES POWERBAND BELT 4/B85
OLD STOCK! GATES POWERBAND BELT 4/B85
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