221
SECTION 7
Errors and Alarm Troubleshooting
This section explains errors that can occur in Loop Controller operation and troubleshooting procedures for alarms that can
occur.
7-1 Errors and Alarm Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
7-1-1 Judging Errors by Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
7-1-2 Errors during Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
7-1-3 Errors during Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
7-1-4 Error Log Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
7-1-5 Execution Error Code List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
7-2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
7-2-1 Replacing the Loop Control Board. . . . . . . . . . . . . . . . . . . . . . . . . . 238
7-2-2 Replacing Process-control CPU Units . . . . . . . . . . . . . . . . . . . . . . . 240
7-2-3 Replacing Loop-control CPU Units . . . . . . . . . . . . . . . . . . . . . . . . . 241
7-2-4 Using the Flash Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
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