MKS HPQ3 - Digital I;O Connector

MKS Instruments UK Ltd
HPQ3 Hardware Manual – SP101019.101 October 2012
22
2.9 Digital I/O Connector
See Interfacing Notes on Page 16 before making connections to this interface
A standard 25-way D-type socket used for interfacing with external equipment. This may be
already in use depending on the type of RGA system purchased.
The Digital I/O connector can also be used to provide alarm output signals and process trip
signals.
This interface offers the following functionality:
16 configurable I/O lines
+3.3V power output fused at 120mA, fuses are self resetting
±15V power output fused at 120mA, fuses are self resetting
+24V power output fused at 120mA, fuses are self resetting
Note: The total power consumption on each rail (+3.3V, ±15V & +24V) for both the Analogue and
Digital I/O ports must not exceed 120mA.
Pin
Function
Description
1
Multiplier Trip
Dedicated to Multiplier Trip (Not available on HPQ3)
2
PA1
3
PA3
4
PA5
5
PA7
6
PB1
7
PB3
8
PB5
9
PB7
10
0V Digital
11
0V Analogue
12
-15V
-15V supply output, fused at 120mA
13
+15V
+15V supply output, fused at 120mA
14
PA0
15
PA2
16
PA4
17
PA6
18
PB0
19
PB2
20
PB4
21
PB6
22
+3.3V fused
+3.3V supply output, fused at 120mA
23
Not Connected