3 input register – Measurement Computing PC104-PDISO8 User Manual
Page 11
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3.2.1 ON & OFF for FORM C RELAYS
O
On means that FORM C relay common is in contact with the Normally-Open
(NO) contact.
O
Off means that FORM C relay common is in contact with the
Normally-Closed (NC) contact.
3.2.2 ON & OFF FOR FORM A RELAYS
O
On means that FORM A relay common is in contact with the Normally-Open
(NO) contact.
O
Off means that FORM A relay common is open.
3.3 INPUT REGISTER
The isolated input register is located at
BASE
address + 1.
WRITE = NO FUNCTION
READ = STATUS: Read the status of the isolated inputs. A one in the input bit
position indicates that a voltage is present at the input.
INPUT #
7
6
5
4
3
2
1
0
BIT No.
7
6
5
4
3
2
1
0
HEX
80
40
20
10
8
4
2
1
DECIMAL
128
64
32
16
8
4
2
1
7
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