SIC-LSI Faulty (CNC Side, 15i)

What does SP0987 mean?

The SIC-LSI (Serial Interface Converter-LSI) on the CNC side for Series 15i is faulty. This indicates a hardware error on the CNC's serial communication interface.

• Faulty Serial Interface Converter-LSI chip on the CNC side.
• Damaged CNC serial communication port.
• Software issue within the CNC's serial communication driver.
• Power supply instability affecting the CNC's SIC-LSI.
• Interference on the CNC's internal bus affecting SIC-LSI data.

Click steps to track your progress.

1. 1

   Measure the 5V supply voltage to the SIC-LSI on the CNC control board.

2. 2

   Inspect the CNC's serial communication connector for bent pins or contamination.

3. 3

   Run CNC diagnostics for serial communication interfaces.

4. 4

   Verify the correct driver is loaded for the serial communication hardware.

5. 5

   Isolate the CNC from other network devices and re-test communication.