ICP552A dddd,err,cm,stat,sense
Explanation
Before reading from an input device or writing to an output device, IOCP detected an I/O error that cannot be corrected. Two consecutive commas or a blank field in the message text indicates that a field could not be determined.
In the message text, the fields are:
- dddd
- The device address or number, in hexadecimal.
- err
- A description of the error based on status and sense information:
- BOC
- Bus-out check.
- CCC
- Channel control check.
- CDC
- Channel data check.
- CHC
- Chaining check.
- CMD
- Command reject.
- CPC
- Channel program check.
- DCK
- Data check.
- EQC
- Equipment check.
- ICC
- Interface control check.
- IOE
- Input/output error (for errors other than those errors described).
- OVR
- Data overrun.
- PRC
- Channel protection check.
- SEN
- A unit check occurred during a sense operation. (When this condition is present, the sense field is not included in the message text.)
- cm
- The command code, in hexadecimal, of the channel command word (CCW) being processed when the error occurred. If the channel command word cannot be found, this field is shown as **.
- stat
- The status portion, in hexadecimal, of the channel status word (CSW).
- sense
- The sense data can be a maximum of 23 bytes long. The first two sense bytes are for the error condition.
System action
IOCP waits for the operator either to try the operation again or to end IOCP.
Operator response
This error is probably a user or hardware error. Try another device on another channel.
Possible values of the err field and appropriate responses are as follows:
- CMD REJECT
- Command reject. Check that device entries on the frame are correct.
- BOC
- Bus-out check.
- EQC
- Equipment check.
- ICC
- Interface control check.
- OVR
- Data overrun.
These are permanent hardware faults. Service representative action is required.