Example of a system message
RS 75 21H 09H E F04BH
RS 76 7804H E F04CH
RS 77 0064H E F04DH
RS 78 0078H E F04EH
RS 75, error number = 21H:The error occurred in the STEP 5 user program when
generating a DB/DX.
RS 75, parameter type=09H:The parameter block in RS 76 to RS 78 contains
3 parameters.
RS 76, parameter 1 = 7804H: Opcode = "GX DX", this means block type "DX".
RS 77, parameter 2 = 0064H: Block number = 100 (dec.)
RS 78, parameter 3 = 0078H: Data block length = 120 data words
Information contained in the message:
In the STEP 5 user program, data block DX 100 should be generated with a
length of 120 data words. However, this already exists.
Bit Assignment of the System Data Words
CPU 948 Programming Guide
C79000-G8576-C848-04
8 - 31
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