Rockwell Automation 1732E-OB8M8SR EtherNet/IP Dual Port 8-Point SOE Input and Scheduled Output Modules UM - Manual (Page 75)

Rockwell Automation Publication 1732E-UM003B-EN-E - March 2014 65
Use the Sequence of Events Input and Scheduled Output Modules Chapter 10
Use the Sequence of Events
Input Module The following section describes how to use the Sequence of Events Input module.
How Does 1732E-IB8M8SOER Store Timestamp Data?
With each timestamped transition, 1732E-IB8M8SOER stores data for that
point. An overview of how the module stores timestamp data is shown in the
following figure.
Generally the following occurs:
1. The module timestamps each transition for inputs that are Timestamp
Capture-enabled. The module can timestamp each transition with a
unique system time.
Input 1
Input 2
Input 7
OFF/ON timestamp data
ON/OFF timestamp data
The module is installed, wired to input
devices and ready to begin operation. All
inputs are configured to timestamp any
transition that occurs.
At this point, timestamp data for each
input is 0 because no input transitions
have occurred.
Note that only 8 bits of the 64-bit
timestamp are shown.
Input 1 transitions from OFF to ON.
The module timestamps the transition;
the module sends the data to the owner-
controller (not shown) and also stores it
locally.
Input 2 transitions from ON to OFF.
The module timestamps the transition;
the module sends the data to the owner-
controller (not shown) and also stores it
locally.
Note that the module continues to store
the timestamp for the OFF to ON
transition on input 1.
OFF/ON timestamp data
ON/OFF timestamp data
OFF/ON timestamp data
ON/OFF timestamp data
OFF/ON timestamp data
ON/OFF timestamp data
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
Input 0
Input 1
Input 2
Input 7
OFF/ON timestamp data
ON/OFF timestamp data
OFF/ON timestamp data
ON/OFF timestamp data
OFF/ON timestamp data
ON/OFF timestamp data
OFF/ON timestamp data
ON/OFF timestamp data
0 0 0 0 0
0 0 0 0 0
0 1 0 1 1
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
Input 0
Input 1
Input 2
Input 7
OFF/ON timestamp data
ON/OFF timestamp data
OFF/ON timestamp data
ON/OFF timestamp data
OFF/ON timestamp data
ON/OFF timestamp data
OFF/ON timestamp data
ON/OFF timestamp data
0 0 0 0 0
0 0 0 0 0
0 1 0 1 1
0 0 0 0 0
0 0 0 0 0
1 1 0 0 1
0 0 0 0 0
0 0 0 0 0
Input 0