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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 30-120 minutes
Siemens 17270 - Block call-by-reference: illegal variable
Machine data and system variables must not be transferred as call-by-reference parameters Control reaction: Correction block is reorganized. Interface signals are set. Alarm display.
17270
Siemens 17270 - Block call-by-reference: illegal variable
Block call-by-reference: illegal variable
Machine data and system variables must not be transferred as call-by-reference parameters 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
- Machine data and system variables must not be transferred as call-by-reference parameters
Troubleshooting Steps
- 1Modify NC program: Assign the value of the machine data or of the system variable to a program-local variable and transfer this as parameter.
- 2Clear alarm with NC START or RESET key and continue the program
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