Dedicated connection for event tasks – Rockwell Automation 1756-XXXX ControlLogix Digital I/O Modules User Manual
Page 93
Rockwell Automation Publication 1756-UM058G-EN-P - November 2012
93
Fast Module Features
Chapter 5
Dedicated Connection for Event Tasks
The 1756-IB16IF input module can initiate an event task over a dedicated
second connection in response to four user-defined input patterns. You can
define these patterns in real time during a control process by using these output
tags:
•
Event[
x].Mask—Defines which input points trigger the event task.
•
Event[
x].Value—Defines whether the masked input points must be in the
On or Off state before the event task is triggered.
Each pattern can use any of the module’s 16 input points, as shown in the
examples below.
In example pattern 1, the input module triggers the event task when input points
0…7 are in the On state.
In example pattern 2, the input module triggers the event task when input points
0…7 are in the Off state.
In example pattern 3, the input module triggers the event task when input points
4, 6, 8, and 10 are in the On state.
Table 18 - Example Pattern 1
Output Tag
Bit Position
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Event[x].Mask
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
Event[x].Value
1
1
1
1
1
1
1
1
x
x
x
x
x
x
x
x
Table 19 - Example Pattern 2
Output Tag
Bit Position
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Event[x].Mask
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
Event[x].Value
0
0
0
0
0
0
0
0
x
x
x
x
x
x
x
x
Table 20 - Example Pattern 3
Output Tag
Bit Position
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Event[x].Mask
0
0
0
0
1
0
1
0
1
0
1
0
0
0
0
0
Event[x].Value
x
x
x
x
1
x
1
x
1
x
1
x
x
x
x
x