115   

Explanation

A direct access storage device (DASD) containing a page data set is unavailable for an I/O operation.

Location X'40C' in central storage points to an area that contains the following:
Byte
Contents
0-3
The number of bytes in the following area.
4-7
The wait state code.
8-15
The name of the module issuing wait state code X'015'
16-23
The time stamp.
24
The reason code. It is one of the following:
Code
Explanation
10
A permanent I/O error occurred when the system was reading the volume serial number for the specified device.
20
The device is not operational.
40
Intervention is required for the specified device.
80
The pack mounted does not contain the proper volume serial number for the device.
25
Zero.
26-27
The device address.
28-29
The first 2 bytes of sense data.
30-31
Zeros.
32-35
The address of the complete sense data.

System action

The system enters wait state X'115'.

Operator response

Do the following:
  1. Verify that the proper pack is mounted on the device specified. Then ready the device.
  2. Restart the waiting processor.
  3. If the reason code indicates that the device is not operational, verify that the channel and the control unit are powered on and properly connected.

Source

Input/output supervisor (IOS)