Settings for the Interface ABI (Incremental)

Setting the Maximum Frequency of the ABI Signals

The maximum frequency of the ABI signals can be set with the parameter ENCDigABIMaxFreq.

Parameter name

HMI menu

HMI name

Description

Unit

Minimum value

Factory setting

Maximum value

Data type

R/W

Persistent

Expert

Parameter address via fieldbus

ENCDigABIMaxFreq

ABI maximum frequency.

The maximum possible ABI frequency is encoder-specific (specified by the encoder manufacturer). The encoder module DIG supports a maximum ABI frequency of 1 MHz (this is the default and maximum value of ENCDigABIMaxFreq). An ABI frequency of 1 MHz means that there are 4000000 encoder increments in 1 second.

Type: Unsigned decimal - 2 bytes

Write access via Sercos: CP2, CP3, CP4

Setting can only be modified if power stage is disabled.

Modified settings become effective after the next power cycle.

kHz

1

1000

1000

UINT16

R/W

per.

-

Modbus 21004

IDN P-0-3082.0.6

Setting the Maximum Distance to the Index Pulse

The maximum distance to the index pulse can be set with the parameter ENCDigABImaxIx.

Parameter name

HMI menu

HMI name

Description

Unit

Minimum value

Factory setting

Maximum value

Data type

R/W

Persistent

Expert

Parameter address via fieldbus

ENCDigABImaxIx

ABI maximum distance for index pulse search.

In the case of a reference movement to the index pulse, ENCDigABImaxIx contains the maximum distance within which the index pulse must be found. If no physical index pulse is found over this range, an error message is generated.

 

Example: A rotary ABI encoder with one index pulse per revolution is connected. The resolution of the encoder is 8000 encoder increments per revolution (this value can be determined using parameter _Inc_Enc2Raw. _Inc_Enc2Raw and ENCDigABImaxIx have the same scaling). The maximum distance necessary for a reference movement to the index pulse is one revolution. This means that ENCDigABImaxIx should be set to 8000. Internally, a tolerance of 10% is added. This means that during a reference movement to the index pulse, an index pulse must be found within 8800 encoder increments.

Type: Signed decimal - 4 bytes

Write access via Sercos: CP2, CP3, CP4

Setting can only be modified if power stage is disabled.

Modified settings become effective immediately.

EncInc

1

10000

2147483647

INT32

R/W

per.

-

Modbus 21006

IDN P-0-3082.0.7