产品型号：6FC5357-0BB25-0AB0

2 系统中常见故障的分析与排除

2.1 CP443通讯模块“stop”指示红灯亮
首先检查接线有无松动，如果接线良好，应检查CPU是否指示EXTF(外部故障)，若由于程序事先设定的地址错误，可重新检查程序的硬件配置是否正确。如果仍无法排除，再检查S7的通讯软件设计得是否正确，或通过更换模块的方法检查是否通讯模块本身故障。
2.2 RS485中继器信号全部消失
如果RS485中继器信号全部消失，会造成信号传输中断，使主控室与各远程站失去联系，无法控制远程站的设备。首先应检查DC24 V电源供电是否正常，如果电源正常再检查RS485中继器的所有接线是否有松动。
2.3 某一远程站失去信号
如果RS485中继器正常工作，而某一远程站在运行中突然失去信号，可能是该站的控制电源消失或CPU故障；如果该站的信号时有时无，则可能是控制电源引起的，可以从UPS电源和供电回路进行查找。

Sumitomo Eaton Hydraulic Orbit Motor GJ-A-6H1S-A, Used
Sumitomo Eaton Hydraulic Orbit Motor J-A6H1S-A, Used
Hydrotechnik Frutigen Hydraulic Valve, SWVPESB-137-P-E?
NEW Camozzi Solenoid Valve, 961-000-P11-23, WARRANTY
Nachi Hydraulic Pressure Reducing Valve, OG-G01-PB-5409
Festo Manifold, CPV14-GE-MP-4, CPV-14-VI ASY, DQ385, US
Uchida Rexroth Directional Control Valve 4WE6J-A0/AW100
Uchida Rexroth Directional Control Valve 4WE6J-A0/AW200
Norgren Pressure Regulator, R24-200-RGFA, USED, WARRANT
Daikin Relief Valve S-series, # SR-T03-1-12, Used, WARR
SMC Switch Air Cylinder, CDM N30-100, USED, WARRANTY
Eaton / Char-Lynn Hydraulic Motor Unit, Type# 101 1012
New Humphrey Kalamazoo Air Valve Mini-Myte, M41E1, 120V
SMC Booster Regulator Unit, Mod# NVBA2100, Used, WARRAN
Parker Hannifin Rosaen Tell Tale Filter, 20-S-74W-M-3-Y
Nachi Solenoid Valve, SA-G01-E3X-C1-3?1, USED, WARRANTY
NEW Parker 3/4" Filter/Regulato?r, 12E43E13AA, WARRANTY
Uchida Rexroth Directional Control Valve 4WE6D-A0/AW100
Parker Hydraulic Valve, # D1VW4CNYCF456, USED, WARRANTY
Parker Cylinder Self Aligning Rod End Coupler, 13373901
Continental Hydraulics Valve VSD05M-3B-GB5H-?60L-A, Used
Parker Directional Control Valve, D3W1BYF, .30 Amp, Use
Dezurik / General Signal UniTorq Pneumatic Actuator M52
Vickers Hydraulic Valve, FN1M-3A-30-JA, USED, WARRANTY
Kitagawa HV-3 Hydraulic Actuator Valve Unit, Used, Off
NEW Chesterton 442 Gemini Split Seal Spare Seal Kit, #
Dezurik / General Signal UniTorq Pneumatic Actuator M52
Oil Air Hydraulics 1.0L Accumulator Tank, 100-1315-013
Daikin Solenoid Operated Valve, JSW-G02-2NA-11, 100V, U
Showa Automatic Lubrication System, YMAS-6 15, 220VAC,
SMC Booster Regulator Unit, Mod# NVBA2100-T03GN, Used,
Parker Hydraulic Valve, 4510CHXXBBAA53, USED, WARRANTY
SMC Solenoid Valve, VVS8080-ARB-YAB?-1, VVS8080ARBYAB1,
Nachi Wet Type Directional Control Valve, SS-G01-A3X-R
Daikin Solenoid Operated Valve, JSO-G02-2NA-20-?D, 100V
Showa Automatic Lubrication System, SMD630F17, USED, WA
(?) Fuji Electric Oil Pump, Used, WARRANTY