Extended control panel functions
The system enables service functions 50 through 70 when you select manual mode and enter function 25 (service switch 1), then function 26 (service switch 2). You use subfunctions with Functions 51 and 57 through 64. Notes:
- When a function has no data to display, FF is shown.
- Some upper functions, 50 through 70, are not supported using the remote control panel and virtual control panel, depending on connectivity.
- Nonsupported functions for the remote control panel and virtual control panel display FF.
To enable functions 50 through 70, follow these steps:
- Select function 25 and press Enter. The display reads 25 00.
- Use the Increment button to select function 26 and press Enter. The display briefly reads 26 00. Then it typically displays 01 B when the upper functions have activated.
Functions 50 through 70 are now available.
You can disable the service functions by selecting and entering either function 25 (service switch 1) or function 26 (service switch 2).
To disable functions 50 through 70, select function 25 and press Enter. Functions 50 through 70 are then no longer available.
Using Subfunctions
To work with subfunctions...
- Use the Increment or Decrement button to select the appropriate function and press Enter. The function number is displayed with asterisks (**); for example, 57**. The two asterisks indicate that subfunctions are available.
- Press the Increment button. The first subfunction number is displayed; for example, 5700.
- As the subfunction number is displayed, press Enter. The system displays data associated with the subfunction number.
- Press the Increment button. The next subfunction number is displayed; for example, 5701.
- As the subfunction number is displayed, press Enter. The system displays the data associated with the new subfunction number.
- Repeat these steps to gather all the data that is associated with the subfunction.
- Use the Increment or Decrement button to return to the function display with asterisks; for example 57**.
- Press Enter to exit the subfunctions.
Function 50 - System Processor Stop
This function stops the system processor. Attention: This function might cause the system to end abnormally. Use it only when directed by your next level of support.
Function 51 - System Processor Status
This function displays the following values:
- Next instruction address (NIA).
- Current task dispatching element (TDE) address.
The data can be displayed 8 digits at a time. Select and enter a subfunction number to display each word of data from 00 to 0F.
The following table is an example of a subfunction data display that shows NIA and TDE information.
Subfunction data display example
Function Subfunction Data Display 51 ** Subfunction mode entered 51 00, 01 NIA (8 bytes) 51 02, 03 Current TDE (8 bytes) Function 52 - System Processor Start
This function starts the system processor (after it has stopped).
Function 53 - Repeat GARD
This function displays the following values:
- Clear memory, processor, L3 Repeat GARD.
- Enable memory, processor, L3 Repeat GARD.
- Disable memory, processor, L3 Repeat GARD.
- View enable/disable status.
This function permanently unconfigures an intermittently failing processor, during the IPL following the failure. This is performed in case the IPL diagnostics cannot detect the failure and automatically unconfigure it. The failing processor must be replaced or the Repeat GARD function must be cleared before that processor can be used again. Attention: This function can cause an operating processor to be permanently unconfigured following a power failure. Use it only when directed by your next level of support.
The following table is an example of a subfunction data display that shows Repeat GARD information.
Subfunction data display example
Function Subfunction Data Display 53 ** Subfunction mode entered 53 00 Clear memory, processor, L3 Repeat GARD 53 01 Enable memory, processor, L3 Repeat GARD 53 02 Disable memory, processor, L3 Repeat GARD 53 03 View enable/disable status (E=Enabled, D=Disabled)
Parent topic:
Instructions and descriptions for control panel functions