Advant Controller AC 31 / Issued: 08.99 Contents – 3
3
6.2 Network communication via the integrated MODBUS
®
interface................................................................. 6-6
6.2.1 Protocol description...................................................................................................................................... 6-6
6.2.2 Configuration of the MODBUS interface ...................................................................................................... 6-8
6.2.3 Programming................................................................................................................................................ 6-8
6.2.4 Response times for MODBUS
®
communication........................................................................................ 6-11
6.3 Point to point communication with the integrated ASCII interface.............................................................. 6-13
6.3.1 Protocol description.................................................................................................................................... 6-13
6.3.2 Configuration of the communication........................................................................................................... 6-13
6.3.3 Programming.............................................................................................................................................. 6-13
6.4 Point to point communication with the programming protocol.................................................................... 6-14
6.4.1 Description.................................................................................................................................................. 6-14
6.4.2 The command list of the integrated editor which is available in terminal mode......................................... 6-14
7 Diagnosis .................................................................................................................................................... 7-1
7.1 Types of errors detected............................................................................................................................... 7-1
7.2 Detection of errors ........................................................................................................................................ 7-2
7.3 Read the PLC status via the programming software.................................................................................... 7-4
7.4 Error management via programming............................................................................................................ 7-4
7.4.1 Description of the diagnosis variables.......................................................................................................... 7-4
7.4.2 Meaning of the contents of the error word flags........................................................................................... 7-6
Appendix..................................................................................................................................................................A-1
A1 Correspondence between variables and physical addresses ......................................................................A-1
A2 Historical values............................................................................................................................................A-3
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