4 Electrical installation
Festo – GDCP-CMMP-M0-HW-EN – 1511c – English 45
4.9.3 Type and design of the cable [X10]
We recommend use of the encoder connection lines in which the incremental encoder signal is twisted
by pairs and the individual pairs are screened.
4.9.4 Connection instructions [X10]
Input [X10] can be used for processing incremental encoder signals and also for pulse direction signals
as generated by stepper motor controller cards.
The input amplifier at the signal input is designed for processing differential signals as per the RS422
interface standard.
4.10 Connection: Incremental encoder output [X11]
4.10.1 Plug [X11]
Motor controller Design on the device Counterplug
CMMP-AS-...-M0 Sub-D plug connector, 9-pin, socket Sub-D plug connector, 9-pin, pins
Tab. 4.22 Plug design [X11]
4.10.2 Pin assignment [X11]
[X11] Pin no. Designation Value Specification
1 A 5 V RA L 66 Ω1) Incremental encoder signal A
6 A# 5 V RA L 66 Ω1) Incremental encoder signal A#
2 B 5 V RA L 66 Ω1) Incremental encoder signal B
7 B# 5 V RA L 66 Ω1) Incremental encoder signal B#
3 N 5 V RA L 66 Ω1) Incremental encoder zero
pulse N
8 N# 5 V RA L 66 Ω1) Incremental encoder zero
pulse N#
4 GND - Reference GND for encoder
9 GND - Screening for connecting
cable
5 VCC +5 V ±5% 100 mA Auxiliary supply, maximum
load 100 mA, short-circuit
proof!
1) The specification for RA designates the differential output resistance
Tab. 4.23 Pin assignment [X11]: Incremental encoder output
The output driver at the signal output provides differential signals (5 V) as per the RS422 interface standard.
Up to 32 other controllers can be addressed by one device.
When connecting two motor controllers in the master-slave mode via [X11] and [X10], the
pins 5 (+5 V - auxiliary supply) must not be connected to each other.
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