Error handling BISS-C mode

State

Description

1

Permanent bit state TRUE

X

Bit state change, depend on encoder position

Warning Bit

Error Bit

Ready Bit

TxPDO Bit

Error description

Possible reasons

0

0

1

0

No error

Encoder is ready for communication

position value is valid

Encoder is connected in the right way, communication is established

0

0

0

1

Encoder is not ready for communication or position value is invalid

Wiring error:
• Encoder is not powered
• Up not connected
• Data lines (D+ / D-) twisted

Wrong parametrization:
• Invalid CRC
• Incorrect 0x80n0 settings

Communication error:
• Watchdog Error

 

 

1

1

Encoder is ready, but position value is invalid

Wrong parametrization:
• Invalid CRC
• Incorrect 0x80n0 settings

Communication error:
• Watchdog Error

1

0

X

0

BiSS-C warning bit set

Encoder specific warning, check manufacturer datasheet

 

1

X

1

BiSS-C error bit set

Encoder specific error, check manufacturer datasheet

X

X

X

X

Position value is invalid

Wrong parametrization:
• Incorrect 0x80n0 settings, check coding 0x80n0:14

1

1

X

1

BiSS-C error bit and BiSS-C warning bit set

Encoder specific error and warning, check manufacturer datasheet