Technical data

Error identifiers ACCUs 1 and 2 contain additional information that defines the error
in greater detail.
ACCU1-L = 1E23H
ACCU2-L = QVZ address
QVZ address The QVZ address indicates the first peripheral byte to generate a
QVZ. Normally, this is the byte with the lowest address in peripheral
operations.
An exception to this are QVZ addresses supplied with the commands
TNB/TNW in the event of a timeout. Since these operations are
decremented, in this case the QVZ address indicates the byte with the
highest address that triggered the QVZ during the transfer of data.
Timeout error during the update of the process image for
inputs/outputs and transfer of IPC flags:
QVZ during PII update
and transfer of the
IPC flags
OB 24 The system program calls organization block OB 24. ACCUs 1 and 2
contain additional information that defines the error in greater detail:
Error identifier
ACCU-1-L ACCU-2-L
Explanation
1E25H yyyyH
Timeout outputting the process image
of the digital outputs
yyyy = address of the non-acknow-
ledged output byte
1E26H yyyyH
Timeout updating the process image of
the digital inputs
yyyy = address of the non-acknow-
ledged input byte
1E27H yyyyH
Timeout updating the IPC flag outputs
yyyy = address of the non-acknow-
ledged IPC flag byte
1E28H yyyyH
Timeout updating the IPC flag inputs
yyyy = address of the non-acknow-
ledged IPC flag byte
Table 5-28 QVZ flags when calling OB 24
Errors in RUN and in RESTART
CPU 928B Programming Guide
5 - 54 C79000-B8576-C898-01