Festo CMMT-ST-SW, Original Instructions Manual

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Protocols and standards Supported encoders
Digital incremental encoder
(with differential A, B and N sig-
nals) digital incremental encoder (differential A, B and N signals), e.g.
ROD 426 or compatible
BiSS C protocol Absolute encoders with BiSS interface that support the BiSS C
protocol
Tab. 121 Supported standards and protocols
3.3.3.2 Encoder parameters and diagnostic messages
The parameters named below are used to configure which encoder is used. The parameters also show
the currently used data of the configured encoder. The options for configuration and parameterisation
of the encoder depend on the properties of the encoder.
The device provides configurable parameters from the parameter set and data from the EEPROM of the
encoder if corresponding data can be found in the EEPROM. The data saved in the EEPROM are
assumed during reinitialisation as active data independently of parameter Px.14.0.0
è Fig.35.
ID Px. Parameters Description
Determines the commutation angle saved in the parameter set.
Parameter P0.3219.0.0 is responsible for the commutation angle
on encoder channel 1 and parameter P0.3219.1.0 for the com-
mutation angle on encoder channel 2 (device specific).
Access read/write
Update reinitialization
3219 Commutation angle
from user configura-
tion
Unit −
Specifies the currently used commutation angle.
Access read/−
Update effective immediately
3220 Current commutation
angle
Unit −
Specifies the zero point offset saved in the encoder.
Access read/write
Update reinitialization
3221 Zero point offset from
encoder memory
Unit r
Determines the zero point offset saved in the parameter set.
Access read/write
Update reinitialization
3223 Zero point offset from
user configuration
Unit r
Product configuration
153 Festo — CMMT-ST-SW — 2019-02