Page A-12
G300 Installation Manual – Pinouts
Revision A
190-00921-01
A.3.5.3
RS-485 Input
The GSU 73 contains one channel of RS-485 serial data communications.
Pin Connector
Pin
Name
I/O
1
P731
MAGNETOMETER RS-485 IN B
IN
2 P731
MAGNETOMETER RS-485 IN A
IN
A.3.5.4
CAN Bus
This data bus conforms to the BOSCH standard for Controller Area Network 2.0-B. This bus complies
with ISO 11898. CAN BUS TERMINATION should be connected to CAN BUS LO if GSU is located at
the end of the bus.
Pin Connector
Pin
Name
I/O
7
P731
CAN BUS HI
I/O
8
P731
CAN BUS LO
I/O
29
P731
CAN BUS TERMINATION
--
A.3.5.5
Configuration Module Interface
Pin Connector
Pin
Name
I/O
20 P732
CONFIG
MODULE
CLOCK
OUT
39 P732
CONFIG
MODULE
DATA
I/O
59
P732
CONFIG MODULE POWER OUT
OUT
78 P732
CONFIG
MODULE
GROUND
--
A.3.6
Discrete I/O
A.3.6.1
Active Low Discrete Inputs
The GSU 73 has 4 configurable discrete inputs conforming to:
a)
Low: 0 VDC < Vin < 3.5 VDC, OR Rin < 375 ohms (active)
b)
High: 8 VDC < Vin < 36 VDC, OR Rin> 100k ohms (inactive)
Pin Connector
Pin
Name
I/O
9 P731
DISCRETE
IN*
1
IN
10 P731
DISCRETE
IN*
2
IN
11 P731
DISCRETE
IN*
3
IN
12 P731
DISCRETE IN* 4
IN
* Indicates Active Low
