6.21 OB 223: Compare Start-Up Modes
Function
By calling OB 223, you can check whether the start-up modes of all
CPUs involved in multiprocessor operation are the same and able to
execute a programmed reaction to errors.
Parameters
none
Result
After calling OB 223, the system program sets the RLO to ’0’ and
writes the value 01H to ACCU-1-LL when the start-up modes are the
same.
Possible errors
•• Start-up modes are not the same
•• Other errors, refer to condition code bits
Condition code bits
If an error occurs, the system program sets the RLO to ’1’ and
transfers an error ID to ACCU-1-LL.
ID Meaning
01H
02H
03H
04H
Start-up modes the same
Internal system error
Start-up modes not the same
Single processor mode, comparison of start-up
modes not possible
Table 6-19 Results IDs of OB 223 in ACCU-1-LL
OB 223: Compare Start-Up Modes
CPU 948 Programming Guide
6 - 64 C79000-G8576-C848-04
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