What causes Siemens SINUMERIK alarm 10942?

M30 or program end command issued before CTABEND statement in curve table definition. Incomplete or malformed curve table syntax with missing required commands. Illegal command sequences within the curve table definition block. CTAB command parameters contain unsupported or invalid instruction syntax.

How do I fix Siemens SINUMERIK alarm 10942?

1. Review the program listing for the specified channel, block, and curve table to locate the M30 or program termination command 2. Verify that CTABEND command is present and correctly positioned immediately before any M30 or program end statement 3. Check curve table definition syntax against machine documentation to ensure all required parameters and commands are present 4. Examine the curve table for any unsupported G-code or M-code instructions that may be embedded within the definition block 5. Reload the corrected program and re-execute to verify the alarm clears

Siemens SINUMERIK codes

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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 20-40 minutes

Alarm 10942

Siemens 840D 10942 - Channel block curve table: illegal instruction during definition

Various illegal command sequences cause the output of this alarm during the definition of the curve table. For example, it is impermissible to terminate definition of a curve table with M30 before programming the CTABEND command.

Siemens SINUMERIKServo/AxisIntermediate20-40 minutes

10942

Siemens 840D 10942 - Channel block curve table: illegal instruction during definition

Channel block curve table: illegal instruction during definition

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Common Causes

M30 or program end command issued before CTABEND statement in curve table definition
Incomplete or malformed curve table syntax with missing required commands
Illegal command sequences within the curve table definition block
CTAB command parameters contain unsupported or invalid instruction syntax

Troubleshooting Steps

1Review the program listing for the specified channel, block, and curve table to locate the M30 or program termination command
2Verify that CTABEND command is present and correctly positioned immediately before any M30 or program end statement
3Check curve table definition syntax against machine documentation to ensure all required parameters and commands are present
4Examine the curve table for any unsupported G-code or M-code instructions that may be embedded within the definition block
5Reload the corrected program and re-execute to verify the alarm clears

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