IDN 3011 (P-0-3011) Encoder Emulation Mode

Sets the signaling format for the encoder emulation on connector X5. A new emulation mode will not become active until the parameter set is saved to non-volatile memory and a cold start or warm start ( IDN 128 procedure is initiated).

Data Length:

2 bytes

Non-Volatile:

Yes

Data Type:

Unsigned decimal

Write Access:

CP2, CP3

Minimum:

 

Run-Up Check:

 

Maximum:

 

Cyclic Transfer:

 

Default:

 

Serial Equiv:

ENCMODE

Units:

 

Version:

5.04 

IDN Type:

PS

ADS Index Group (hex.):

0x8BC3

Definition:

Mode

Function

Comments

0

Input

The interface is used as an input.

1

AqB (ROD)

Incremental encoder emulation. Incremental encoder compatible pulses (max. 250 kHz) are transmitted as two signals (A and B) with a 90 (electrical phase difference (quadrature)). A zero-marker pulse is also transmitted. If an encoder with a commutation track is used, then the output of the zero-marker pulse is inhibited until the zero pulse from the encoder has been evaluated.

2

SSI

Synchronous serial interface (SSI) for absolute encoder emulation. The standard SSI absolute encoder format transmits 24 bits. The upper 12 bits are fixed to zero and the lower 12 bits contain position information. For ‘N’ pole resolver feedback systems, the transmitted position refers to the position within 2/N turns of the motor. If an encoder with a commutation track is used as feedback, then the upper 12 bits are set to 1 (invalid data) until homing is performed.