CRITICALAlarm code
842
SUB PROGRAM NESTING EXCEEDED (WNo., NNo., BNo.)
What it means
1. The total number of sequential calls of subprogram has exceeded eight. 2. Execution of a program that includes an “M99” command was attempted in the direct operation mode using HD or Ethernet. 3. The program in the HD or host called a program stored in the HD or host.
What to do
- 11.
- 2Check the number of subprogram calls, and correct the program so that the number of calls does not exceed eight.
- 32.
- 4Do not include an “M99” command in the main program to be executed in the direct operation mode.
- 53.
- 6Do not call a subprogram stored in the HD or host from a program stored in the HD or host.
Codebook — decoded
BError typeRegistered Data — program or tool data error
I (L)Stop statusunspecified
O (S)Clearingunspecified
Still faulted after these steps? Do not restart under load — ask the Mazatrol assistant.
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