Jetter JM-204-480, User Manual, Page: 107 / 126

JetMove 204-480 14.1 Function
Jetter AG 107
14 Counting Input (Option)
14.1 Function
For the digital servo amplifier JetMove 204-480, an optional integrated counter card
can be ordered (article designation of the device: JM-204-480...-CNT). It supplies a
counter input with the following interface:
• EnDat 2.2 by Heidenhain
• Synchronous Serial Interface (SSI)
• Incremental counter
The received or counted value of an actual position can be read via a JetMove
register by the controller program or processed by the firmware of the JetMove in the
controllers.
Yet, the actual position of an SSI encoder cannot be used for position control. It only
indicates the position of the leading axis.
14.2 EnDat 2.2
14.2.1 Technical data
Technical Data EnDat 2.2 Input
Encoder types Single, multiturn, or linear absolute encoders
Scanning 62.5 µs
Transfer rate 8 MHz
Maximum cable length 100 m
Type of signal 5 V differential signal
Input impedance 22 k
Bus termination 120 integrated resistance
Electrical isolation None
Ω
Ω