FB1.ENCRES

Description

This parameter sets or gets the resolution of the motor encoder (encoder feedback systems only) in number of counts per revolution for a rotary motor and the number of encoder pitches per motor pole pitch for a linear motor. The number of encoder counts per revolution is obtained by multiplying the motor catalog resolution in units of PPR by four. For example, for a 1024 PPR resolution motor, the number of encoder counts per revolution is 1024*4 = 4096. For this motor FB1.ENCRES must be set to 4096.

For linear motors, the value of FB1.ENCRES is set to the number of encoder pitches per motor pole pitch. For a motor with 32 mm pole pitch, and a 40 µm encoder pitch, the value for FB1.ENCRES should be set to 32 mm/40 µm = 800.

Depending on the value of FB1.IDENTIFIED, FB1.ENCRES changes between read-only and read-write. The following table lists the FB1.IDENTIFIED values and FB1.ENCRES's corresponding type.

FB1.IDENTIFIED value FB1.ENCRES type
10 (Incremental encoder) R/W
11 (Incremental encoder, no halls) R/W
20 (Sine encoder) R/W
21 (Sine encoder, no halls) R/W
30 (EnDat 2.1) R/O
31 (EnDat 2.2) R/O
32 (biSS) R/O
33 (HIPERFACE) R/O
34 (biSS Mode C) R/W
40 (Resolver) R/W
41 (sfd) R/O
42 (Tamagawa) R/O

General Information

Type

Depends on FB1.IDENTIFIED.

Units

Encoder counts

Range

0 to 232-1

Default Value

1,024

Data Type

Integer

See Also

N/A

Start Version

M_01-00-00-000

Variants Supported

Variant Supported
AKD Base Yes
AKD with Position Indexer Yes
AKD EtherCAT Yes
AKD CANopen Yes
AKD BASIC Yes
AKD SynqNet Yes*
AKD EtherNet/IP Yes
AKD PROFINET Yes
AKD Sercos® III Yes
AKD-N Yes
AKD-C No

*In SynqNet, a parameter may be available in the firmware but have no effect on the system. See SynqNet Supported Parameters.

Fieldbus Information

If your drive type is listed as supported but no index, address, or instance number is listed, then this parameter is accessible through WorkBench, but not over your fieldbus type. For information on SynqNet parameters see SynqNet Supported Parameters.

EtherCAT CoE and CANopen
Index/Subindex Object Start Version

3533h/0

M_01-00-00-000
PROFINET and Sercos® III
Fieldbus Address Attributes Signed?

PROFINET

2141 DWord No
Sercos® III 4 Octets
EtherNet/IP
Instance Data Size Data Type
142 4 Byte Integer
Modbus
Register Address Is 64 bit? Attributes Signed? Object Start Version

282

No 32 bit No M_01-03-00-000

Related Topics

"Feedback 1"