Rockwell Automation 1732E-OB8M8SR EtherNet/IP Dual Port 8-Point SOE Input and Scheduled Output Modules UM - Manual (Page 70)

60 Rockwell Automation Publication 1732E-UM003B-EN-E - March 2014
Chapter 9 Specific Features of the 1732E-OB8M8SR Scheduled Output Module
Operational Modes The 1732E-OB8M8SR output module has two modes of handling the individual
output points:
• Normal Output – The output behaves like a normal output point such
that the module updates the output point upon receiving new I/O data
from the client controller.
• Scheduled Mode – The output module is updated at a specific scheduled
time. The client controller sends the output data value along with the
associated time information to the output point. When the system time as
kept by the module reaches the scheduled time, the output value is written.
If the module system time is already past the scheduled time, the output
value is written immediately.
Each individual output point can provide high-speed scheduling of every output
signal based on time scheduling. The user can configure which output points are
to be used for scheduling purposes, leaving the other output points for use as
"normal" outputs.
Time-Scheduled Output Control
Time-scheduled output control is a feature available on the eight outputs of the
1732E-OB8M8SR module.
By using the time-scheduled output control feature, the module can turn the
outputs On or Off at a specific CIPSync time. You can set the time setpoint (in
1
µs increments) for the output to turn On or Off in the application program.
The 1732E-OB8M8SR module manages the time locally as such that the output
is turned On or Off at the time specified.
MAOC Instructions with Time-Scheduled Output Control
The Motion Axis Output Cam (MAOC) instruction provides position-based
control of outputs, by using position and velocity information of any motion axis.
When the 1732E-OB8M8SR module is specified as the output source for the
MAOC instruction, then the MAOC instruction automatically handles the
time-based output scheduling and enables it on the eight outputs on the
1732E-OB8M8SR module. The benefit of using output scheduling in this
manner is that the resolution of the output control is improved from the motion
coarse update rate (typically 1…32 ms), to 100
µs.
To learn more about this feature and usage of the module, see the chapter
entitled,Use the Sequence of Events Input and Scheduled Output Modules on
page 63.