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5-8 Input / Output MN1928
5.2.9 S tepper axes outputs 2-3
Location X10
Mating connector: Weidmüller Omnimate BL 3.5/12
Pin Name Description 96-pin
connector
12 Shield Shield connection a32
11 DIR3+ Direction output 3+ a23
10 DIR3- Direction output 3-
9 STEP3+ Step (pulse) output 3+ b23
8 STEP3- Step (pulse) output 3-
7 DGND Digital ground a3
6 Shield Shield connection a32
5 DIR2+ Direction output 2+ c15
4 DIR2- Direction output 2-
3 STEP2+ Step (pulse) output 2+ c14
2 STEP2- Step (pulse) output 2-
1 DGND Digital ground a3
The stepper outputs on the backplane are driven by DS26LS31 line drivers, providing RS422
differential outputs.
CAUTION: The DS26LS31 drivers are static sensitive devices. Take appropriate ESD
precautions when handling the backplane.
NextMove ES
STEP2-
DGND
Backplane
1
2
96
pin
connector
‘X10’
Step
Output
74AHCT244
GND
DS26LS31
STEP2+3
ULN2003
Figure 16 - Stepper output - STEP2 output shown
1
12