7.6 Handwheel
X143 pin assignment
Pin Signal name Meaning
1 P5 P5 5 VDC power supply
2 M M Ground
3 1A 1A Handwheel pulses track A, channel 1
4 -1A 1/A Handwheel pulses track A (negated), channel 1
5 1B 1B Handwheel pulses track B, channel 1
6 -1B 1/B Handwheel pulses track B (negated), channel 1
7 P5 P5 5 VDC power supply
8 M M Ground
9 2A 2A Handwheel pulses track A, channel 2
10 -2A 2/A Handwheel pulses track A (negated), channel 2
11 2B 2B Handwheel pulses track B, channel 2
12 -2B 2/B Handwheel pulses track B (negated), channel 2
Signal transfer
Max. two electronic handwheels can be connected to connector X143 on the rear of the PPU.
The signals can be transferred using the following technique:
● Differential signal transfer (RS422): One signal and a negated signal for each track.
● Asymmetrical signal transfer: One 5 V TTL signal for each track.
The following applies to both techniques:
● Max. output frequency: 500 kHz
● Phase shift of Track A to Track B: 90° ±30°
● Supply: 5 V, max. 250 mA
Interface description
7.6 Handwheel
PPU 1740
78 Equipment Manual, 01/2019, A5E47615272B AA
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