Rockwell Automation 1791ES-IB16 Guard I/O EtherNet/IP Safety Modules - Manual (Page 76)

76 Rockwell Automation Publication 1791ES-UM001D-EN-P - May 2013
Appendix A Get Diagnostic Status from Modules by Using Explicit Messaging
When the explicit message reads the data from the 1791ES-IB8XOBV4
module, the data appears in the MSGdata tags as shown.
The first 32 bits of the instance are in MSGdata[0].0…31, and the final 8
bits are in MSGdata[1].0…7. These 40 bits must be mapped according to
Instance 852. An easy method to do this mapping is to create a user
defined tag (UDT) for Instance 852. Once complete, it appears as follows.