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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 20-40 minutes
Siemens 14520 - Block illegal PROC instruction in data definition section
The PROC statement may only be programmed at the beginning of the subroutine Control reaction: Correction block is reorganized. Interface signals are set. Alarm display.
14520
Siemens 14520 - Block illegal PROC instruction in data definition section
Block illegal PROC instruction in data definition section
The PROC statement may only be programmed at the beginning of the subroutine Control reaction: Correction block is reorganized. Interface signals are set. Alarm display.
Safety
- Only qualified personnel should diagnose and clear control alarms; follow the machine builder's safety procedures and lockout/tagout where hardware work is required.
Common Causes
- The PROC statement may only be programmed at the beginning of the subroutine
Troubleshooting Steps
- 1Modify NC part program appropriately.
- 2Clear alarm with NC START or RESET key and continue the program
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Always verify with your machine manual or a certified technician before performing service procedures.