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Service Functions 50 through 70 are available when switch 1 (Function 25) has been
entered, followed by the entry of switch 2 (Function 26). The restricted panel functions
may be disabled again by selecting and entering either switch 1 (Function 25) or switch
2 (Function 26).
Note: Low-level debug functions are available only after a terminating error.
Using Subfunctions
Subfunctions are used with Functions 51 and 55 through 64. After selecting and
entering the function, the subfunction field appears with two asterisks. You may now
select and enter a subfunction value. When selected and entered, actual data YY FF
(where YY is the function number) is displayed. The YY FF response indicates that no
data is present for this subfunction value. The data is displayed as eight hexadecimal
digits, which is 4 bytes of data.
These steps may be repeated for different subfunction values. To exit subfunctions,
select and enter the two asterisks for the subfunction value. The following table shows
an example of a subfunction data display.
Function
51
51
51
Function 50 - System Processor Stop
This function stops the system processor.
Attention: This function may cause the system to end abnormally. Do not use unless
you are directed by your support personnel.
Function 51 - System Processor Status
This function displays the following values:
v NIA (next instruction address)
v Current TDE address
The data may be displayed 8 digits at a time. Select and enter a subfunction number to
display each word of data from 00 to FF.
Function 52 - System Processor Start
This function starts the system processor (after it has stopped).
Function 53 - Path Switch
This function resets communications between the service processor and the operator
panel.
Subfunction
**
00, 01
02, 03
Appendix C. Operator Panel Function Codes
Data Display
Subfunction mode entered
NIA (8 bytes)
Current TDE (8 bytes)
605
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