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User Manual 1260-93
2 Addendum Page 6/98
Control Information for the 1260-93A
The following information describes the control-register-to-relay-channel mapping for a 1260-93A and Relay
Module. This information may be used to control a 1260-93A when using a 1260-01T in the register-based
mode of operation.
Each relay on this module is controlled by setting or clearing a single bit within a Control Register. Control
Registers on the module operate 8 channels simultaneously. There are eight control bits per Control
Register. Setting the bit to a I closes the relay; setting the bit to a 0 opens the relay.
The table below shows the mapping from logical channels to control bits. The logical channels are used when
operating the relay module in message-based mode. The control bits within the Control Registers are used to
operate the module in register-based mode.
Each Control Register is located 2 addresses from the previous Control Register. That is, each Control
Register is located at an odd address. This is shown in Table 2-2 of the 1260-01T manual. Control Register
0 is located at the "Base A24 Address" for the module. Consult the "Register-Based Operation" Section of
Chapter 2 of the 1260-01T manual for a description of calculating control register addresses.
Channel
Control Register
Control Bit
0
0
2
1
0
0
2
0
1
3
0
3
4
0
4
10
1
0
11
0
6
12
0
7
13
1
1
14
1
2
19
0
5
20
1
6
21
1
5
22
1
6
23
1
7
24
2
0
29
1
3
30
2
4
31
2
2
32
2
3
33
2
5
34
2
6
39
2
1
40
3
2
41
3
0
42
3
1
43
3
3
44
3
4
49
2
7
50
5
5
51
5
6
52
5
2
53
5
4
54
5
3
59
3
5
60
4
7
61
4
5
62
4
4
63
4
6
64
5
0
69
5
7
70
4
1
71
3
7
Summary of Contents for 1260-93
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