Introduction; Differences Between Module And Standard I/O - Rockwell Automation Allen-Bradley ArmorBlock 1732E-IB8M8SOER User Manual

Introduction

Differences Between Module
and Standard I/O
Use the Modules in an ArmorBlock System
This chapter describes how the ArmorBlock EtherNet/IP Dual Port 8-point
Sequence of Events Input and Scheduled Output Modules operate in an
ArmorBlock system.
Topic

Differences Between Module and Standard I/O

Similar Functionality to Standard ArmorBlock
In many aspects, the modules behave the same as any other ArmorBlock digital
module. However, the modules offer several significant differences from other
EtherNet/IP ArmorBlock digital input modules, including those described in
Table 1.
Table 1 - Differences Between Module and Standard I/O
Difference
Additional data produced for controller
CIP Sync
Position Based Control using MAOC
Only one owner-controller per module
Rockwell Automation Publication 1732E-UM003D-EN-E - November 2021
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Description
The modules produce significantly more data for its owner-controller than
standard ArmorBlock digital input modules. While other input modules
only produce ON/OFF and fault status, the modules produce data such as
ON/OFF and fault status, timestamp data, indication of whether new data
was produced for specific input points or if transitions were not
timestamped.
These modules have an internal clock that is synchronized with a master
clock using CIP Sync. This clock is used for time stamping inputs and
outputs.
The Motion Axis Output Cam (MAOC) instruction provides position-based
control of outputs by using position and velocity information of any motion
axis.
The 1732E-OB8M8SR module can be 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.
While multiple controllers can simultaneously own other digital input
modules, the module only supports a single owner-controller.
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