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3 — INSTALLATION AND WIRING
Curtis Model 3301T Digital Instrumentation – September 2021
pg. 24
I/O PINS
Table 5 I/O Pins
Pin
Signal Name
Description
1
SCI Rx
Serial communications — Rx.
2
SCI GND
Serial communications — ground.
3
CAN_L
CAN low.
4
CAN_L Termination
CAN 120Ω termination resistor — low.
5
Switch Input1/Analog Input1/Frequency
Input 1
Input for switch, analog, or frequency signals.
6
Switch Input3/Analog Input3/HYD Fault
Code Input
Input for switch, analog, or hydraulic
controller fault code signals.
7
Keyswitch
8
Switch Input5/MOSFET OUTPUT
Switch input or driver output.
9
SCI Tx
Serial communications — Tx.
10
CAN_GND
CAN ground.
11
CAN_H
CAN high.
12
CAN_H Termination
CAN 120Ω termination resistor — high.
13
Switch Input2/Analog Input2/Frequency
Input 2
Input for switch, analog, or frequency signals.
14
Switch Input4/Analog Input4/TRA Fault
Code Input
Input for switch, analog, or traction controller
fault code signals.
15
B–
16
B+