Connection
Commissioning Instructions I/O Terminal Module
23
ID 441758.05
WE KEEP THINGS MOVING
4
Terminal description X120 for stepper motor signals
Connection – topology
Only linear topology is permitted when two or more stations are coupled via interface X120. The signal lines
must be terminated with resistors for the stations at either end of the coupling. The terminating resistors can
be switched through via switches S3, S4 and S5 on accessory parts XEA 5001 and REA 5001.
Please note that the switches are installed in different positions on the REA 5001 und XEA 5001 accessories.
Identification of the switches and assignment of the switch positions to the function (switched on/switched off
terminal resistance) are shown on the PCB cover.
Pin
Designation
Function
plug
1
GND-ENC
Reference potential for pins 4 to 7
2
—
—
3
—
—
4
/Imp
Inverse, differential input/output for
impulses
5
Imp Differential
input/output for impulses
6
Richtung
Differential input/output for direction
("Richtung")
7
/Richtung
Inverse, differential input/output for direction
8
U
A
Encoder power
9
GND
Reference for pin 8
Switch
TTL Encoder
SSI Encoder
S3
Zero
—
S4
A
CLK
S5
B
DATA
5
1
9
6
REA 5001
S3
XEA 5001
S5
S4