STS 1656 - PLC Connector Pins; Table 2-1: PLC Connector Pin-Out

1656 & 1657 Battery Element Tester Owner’s Manual
STS Instruments Page 12 of 88
Parameter Specification Notes
RS485 (Option –RS485) – NOTE: Mutually exclusive with –RS232 option
Baud Rate
9600
Data Bits
8
Start Bits
1
Stop Bits
1, 2
Connector D-Sub, 9 pin, Rear Panel, Female
RS485 Connector Pins
Pin 1
Signal Gnd
Pin 2
Vcc
Pin 3
A+
Pin4
B-
Pins 5,6, 7, 8, 9
n/c
PLC (Option)
Type
Digital I/O
Connector
HD DE-Sub, 15 pin, Rear Panel, Female
Pin #’s - View from the back of the unit
Signals
See Table 2-1
2.4.1 PLC Connector Pins
Pin
Direction Signal Description
1
Relay Output
FAIL result
Latches low on FAIL till a new test is started
2
Relay Output
PASS result
Latches low on PASS till a new test is started
3
RLY Common
Relay Common
Common for all Relay Outputs
4
Digital Output
Reserved for Auto-line Option
Do not connect
5
Ground
Analog/Digital Signal Ground
Signal Ground for non-Relay Outputs
6
n/c
Reserved
Do not connect
7
Relay Output
Processing
Low when test is running
8
Relay Output
Bell
Low on FAIL, High on PASS
9
Digital Output
Reserved for Auto-line Option
Do not connect
10
Power
DC power supply output
Power out: +5Vdc, 1.5Adc max
11
n/c
Not connected
12
Digital Input
Remote Test
Short to signal ground and release to remotely
trigger a test (positive edge triggered)
13
Digital Input
Remote Reset
Short to signal ground and release to remotely
stop a test (positive edge triggered)
14
Analog Input
Reserved
Do not connect
15
Digital Output
Reserved for Auto-line Option
Do not connect
Table 2-1: PLC Connector Pin-out