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Alarm, error and system messages

11.2 Error messages and causes for MOBY D with ASM and FC/FB 45 (direct MDS addressing)

MOBY D

System Manual, 01/2010, J31069-D0147-A6-7618

283

11.2.2 Error messages

An error condition exists in FC/FB 45 whenever the "Error" variable is enabled on a channel.

If this is the case, the exact cause of the error can be determined from variable

"error_MOBY", "error_FC" or "error_BUS".

Table 11- 6 Classification of error messages

Error variable Classification

error_MOBY This error was reported by the MOBY-ASM / write/read device.

There are two main reasons for this:

 Communication between ASM and write/read device or between

write/read device and MDS is faulty.

 The ASM/SLG is unable to process the command.

Error_MOBY is indicated on the ASM on the ERR LED with an appropriate

flashing pattern.

error_FC This error is signaled by FC/FB 45.

Main cause

 There is a parameter error in "Params_DB" or "command_DB".

error_BUS The transport layer of PROFIBUS DP is signaling an error. A PROFIBUS DP

tracer and a PROFIBUS DP tester (BT 200; Order No. 6ES7 181-0AA00-

0AA0) is an invaluable tool for accurate troubleshooting. The PROFIBUS DP

system diagnostics can provide further information about the cause of the

error. The error shown here is reported by the SFC 58/59 system function in

the RET_VAL parameter. For a detailed description of the RET_VAL

parameter, please refer to the SIMATIC S7 system manuals (see System

software for S7-300/400).

Note

When several errors occur with chained commands, the "error variable" always indicates the

first error detected.

Siemens SIMATIC MOBY D User Manual

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