Result
If the function is executed without any error and if the block exists on
the CPU, the system program transfers the following values:
- ACCU-1-L: Address of the 1st data word (DW 0),
20-bit address,
- ACCU-2-L: Length of the data block in words (without
block header)
Example: ACCU-2-L contains the value’7’:
The data block consists of data
words DW 0 to DW 6,
- RLO:= 0.
Possible errors
The errors listed in the table below can occur. If an error occurs, the
system program sets the RLO to ’1’ and the following condition code
bits as shown in the table. It also enters an error ID in ACCU-1-L.
RLO CC 1 CC 0 ACCU-1-L Meaning Scan
1 0 1 B501H Block does not exist JC
JM
JN
1 1 0 B502H Wrong block number JC
JP
JN
1 1 0 B503H Wrong block ID JC
JP
JN
Table 6-17 Error codes of OB 181 and their scans
OB 181: Test Data Blocks (DB/DX)
CPU 948 Programming Guide
6 - 58 C79000-G8576-C848-04
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