Rockwell Automation 440R MSR241 Minotaur Safety Relay - Manual (Page 3)

MSR241 DeviceNet for Safety System MSR200
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Communicate with the MSR241 module
To transfer data from MSR241 to the D-Net it is required to upload the
“Electronic Data Sheet” (EDS file). This file is available for free download on
the A-B web-page:
http://www.ab.com/networks/eds/ >Product Name
MSR241P
The name of the EDS file is: 0001000C00A30100.eds
The MSR241 operates as a “Group 2 only slave” device and supports UCMM.
The MSR241 is exchanged with the master through a polled, cyclic or change
of state connection.
Polled – Masters initiates communication by sending its polled I/O messages
to the MSR241 module. The module consumes the message, updates any
outputs, and produces a response. The response contains the input data.
Cyclic – allows configuration of the module as an I/O client. The module will
produce and consume its I/O cyclically at the rate configured.
Change of state – production occurs when an input changes. If no input
change occurs within the expected packet time, a heartbeat production
occurs. This heartbeat production tells the scanner module that the MSR241
is alive and ready to communicate. Consumption occurs when data changes
and the master produces new output data to the module.
The module produces 4 bytes and consumes 1 byte for outputs.