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Encoder with asynchronous communication interface at [X2]
Parameterisable no. of
encoder pulses
1
…
16777216 position values/revolution (24 bit)
Angle resolution/inter-
polation
None; digital angle signal from encoder
Clock signal
[MHz]
None; asynchronous communication
Data channel
RS422/485, asynchronous communication
Bit rate: 1 MHz/2 MHz/4 MHz
18 bit/frame
Input impedance
A/B/N
[Ω]
RS422/485; 120
[V]
5.00
…
5.50
Output supply
[mA]
Max. 250
Support: mechanical
multiturn encoder
[bit]
Yes, 16
Support: battery-buf-
fered multiturn
encoder
Yes, up to 16 bit; battery buffer not integrated in CMMT-AS
(cable adapter/box required)
Support: encoder para-
meter memory
Yes, storing of controller parameters in encoder
Support: encoder error
messages
Yes, supported
Encoder signal monit-
oring
Up to 2 corrupted/failed encoder messages tolerated. After this
an error message will be generated.
Tab. 116 Encoder with asynchronous communication interface at [X2]
11.3.6
Inputs, outputs, ready contact at [X1A]
Operating ranges of digital inputs drawing current
Technical data
102
Festo — CMMT-AS-C2/C4-3A-... — 2018-02