Okuma Alarm-B 2939 SUB PROGRAM stack
The number of RTS commands (return from subprogram)is more than number of CALL commands (subprogram call).
Or the nesting level of subprogram call exceed eight.
Code
1->The number of RTS commands (return from subprogram) is more than the number of CALL commands (subprogram call).
2->The nesting level of subprogram call exceeded eight.
Probable Faulty Locations
Program error