Omron NX1P2 series

6 - 1
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
6
This section describes the confirmation methods and corrections for errors that can
occur in the NX1P2 CPU Unit and describes hardware errors that are related to the
PLC Function Module and NX bus errors that are related to the NX Bus Function Mod-
ule.
6-1 Operation after an Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6-1-1 Overview of NX1P2 CPU Unit Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6-1-2 Fatal Errors in the CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6-1-3 Non-fatal Errors in the CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6-2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
6-2-1 Checking to See If the CPU Unit Is Operating . . . . . . . . . . . . . . . . . . . . . . . . .6-11
6-2-2 Troubleshooting Flowchart for Non-fatal Errors . . . . . . . . . . . . . . . . . . . . . . . 6-12
6-2-3 Error Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
6-2-4 Error Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-32
Troubleshooting