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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 30-120 minutes
Siemens 840D 104133 - PA: Error on reading cont./JOG mode
Alarm 104133 indicates a parameter access (PA) error when the system attempts to read the continuous/JOG mode setting. This typically occurs when the NC program or synchronized action tries to read operating mode parameters that are either incorrectly addressed, not accessible in the current context, or the PA command syntax is malformed.
Siemens 840D 104133 - PA: Error on reading cont./JOG mode
PA: Error on reading cont./JOG mode
Siemens SINUMERIK alarm 104133: PA: Error on reading cont./JOG mode. This alarm indicates an error condition in the NC program or control configuration that must be resolved before the operation can continue.
Root Cause Summary
Alarm 104133 indicates a parameter access (PA) error when the system attempts to read the continuous/JOG mode setting. This typically occurs when the NC program or synchronized action tries to read operating mode parameters that are either incorrectly addressed, not accessible in the current context, or the PA command syntax is malformed.
Safety
Causes and Fixes
Identify the NC block number where the alarm occurred. Check the alarm detail display for the block number and line reference.
Review the PA command syntax in the identified block. Verify parameter number format (e.g., $PA_xxx) and ensure correct spelling and structure according to Siemens documentation.
Verify that the parameter being read is valid for your specific SINUMERIK 840D software version. Check machine data documentation for parameter availability.
Correct the PA command syntax or replace with the appropriate parameter identifier. Test the program in single block mode to verify the fix.
Always backup the NC program before making modifications.
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