Siemens CPU 948 - Page 238

Testing the address lines
System data word Error information
RS 75 error no. 630BH
RS 76 FFFFH
RS 77 incorrect address, high
RS 78 incorrect address, low
Testing the system program
code
System data word Error information
RS 75 error no. 610BH
RS 76 FFFFH
RS 77 actual checksum, high
RS 78 actual checksum, low
Testing the block code of
STEP 5 logic blocks
System data word Error information
RS 75 error no. 620AH
RS 76 block type/block no. (IDs from block header)
RS 77 expected checksum
RS 78 actual checksum
Self-Test
CPU 948 Programming Guide
5 - 40 C79000-G8576-C848-04