APC ALARM: PARITY ERROR

What does SV0304 mean?

A parity error was detected during data transfer from the absolute-position detector, making it impossible to obtain the correct machine position. This error points to a potential defect in the absolute-position detector, its cable, or the servo interface module.

• Parity bit error in the data transmitted by the APC.
• Corrupted data bits in the transmission stream.
• Faulty APC encoder generating incorrect parity.
• Environmental noise corrupting data during transfer.

Click steps to track your progress.

1. 1

   Verify parity setting (even/odd) in CNC communication parameters.

2. 2

   Measure APC encoder output for signal integrity and bit stability.

3. 3

   Check APC encoder for loose internal connections.

4. 4

   Shield communication cables to prevent external interference.