Siemens SINUMERIK codes
AxisMD

axismd.ai

Siemens SINUMERIK Controller

Program/G-code · Intermediate · 30-120 minutes

Alarm 26248

Siemens 26248 - Block : The contents ( ) of parameter $NP_BIT_NO[ ] are invalid

Invalid bit number indicated for the switchover of a preactivated protection area between the states activated / deactivated. Bit number must have a value between -1 and 63. Whereby -1 means that no interface bit was assigned to the protection area. Values between 0 and 63 indicate the index of the interface bit through which the activation state of the protection area is switched over Control reaction: Correction block is reorganized. Interface signals are set. Alarm display.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

26248

Siemens 26248 - Block : The contents ( ) of parameter $NP_BIT_NO[ ] are invalid

Block: The contents of parameter $NP_BIT_NOare invalid

Invalid bit number indicated for the switchover of a preactivated protection area between the states activated / deactivated. Bit number must have a value between -1 and 63. Whereby -1 means that no interface bit was assigned to the protection area. Values between 0 and 63 indicate the index of the interface bit through which the activation state of the protection area is switched over 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

  • Invalid bit number indicated for the switchover of a preactivated protection area between the states activated / deactivated.
  • Bit number must have a value between -1 and 63.
  • Whereby -1 means that no interface bit was assigned to the protection area.

Troubleshooting Steps

  1. 1Indicate valid index
  2. 2Clear alarm with NC START or RESET key and continue the program

Seeing Multiple Alarms?

Seeing another alarm with this one? Enter the code.

Get machine-aware diagnosis

AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.

Start free

Was this guide helpful?

Always verify with your machine manual or a certified technician before performing service procedures.