12-1
Chapter 12 Troubleshooting
Table of Contents
12.1 Troubleshooting ............................................................................................ 12-2
12.1.1 Basic Inspection .................................................................................... 12-2
12.1.2 Eliminating Errors .................................................................................. 12-2
12.1.3 Troubleshooting Procedure ................................................................... 12-3
12.1.4 Viewing Error Logs ................................................................................ 12-4
12.2 Troubleshooting for CPU Modules ................................................................ 12-5
12.2.1 ERROR LED Indicator’s Being ON ........................................................ 12-5
12.2.2 ERROR LED Indicator’s Blinking ........................................................... 12-8
12.2.3 BUS FAULT LED Indicator’s Being ON ............................................... 12-14
12.2.4 BUS FAULT LED Indicator’s Blinking .................................................. 12-15
12.2.5 Troubleshooting for AH500 Redundancy System ................................ 12-16
12.2.6 Troubleshooting for EtherNet/IP .......................................................... 12-27
12.2.7 Others ................................................................................................. 12-28
12.3 Troubleshooting for I/O Modules ................................................................. 12-45
12.3.1 Troubleshooting for Analog I/O Modules and Temperature Measurement
Modules .............................................................................................. 12-45
12.3.2 Troubleshooting for AH02HC-5A/AH04HC-5A .................................... 12-48
12.3.3 Troubleshooting for AH05PM-5A/AH10PM-5A/AH15PM-5A................ 12-50
12.3.4 Troubleshooting for AH20MC-5A ........................................................ 12-52
12.3.5 Troubleshooting for AH10EN-5A/AH15EN-5A ..................................... 12-54
12.3.6 Troubleshooting for AH10SCM-5A/AH15SCM-5A ............................... 12-55
12.3.7 Troubleshooting for AH10DNET-5A .................................................... 12-56
12.3.8 Troubleshooting for AH10PFBM-5A .................................................... 12-58
12.3.9 Troubleshooting for AH10PFBS-5A ..................................................... 12-59
12.3.10 Troubleshooting for AH10COPM-5A ................................................... 12-60
12.4 Error Codes and LED Indicators ................................................................. 12-62
12.4.1 CPU Modules ...................................................................................... 12-63
12.4.2 Analog I/O Modules and Temperature Measurement Modules ............ 12-83
12.4.3 AH02HC-5A/AH04HC-5A .................................................................... 12-85
12.4.4 AH05PM-5A/AH10PM-5A/AH15PM-5A ............................................... 12-86
12.4.5 AH20MC-5A ........................................................................................ 12-87
12.4.6 AH10EN-5A/AH15EN-5A .................................................................... 12-88
12.4.7 AH10SCM-5A/AH15SCM-5A .............................................................. 12-88
12.4.8 AH10DNET-5A .................................................................................... 12-89
12.4.9 AH10PFBM-5A.................................................................................... 12-90
12.4.10 AH10PFBS-5A .................................................................................... 12-91
12.4.11 AH10COPM-5A ................................................................................... 12-92
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