Rockwell Automation Publication 1791ES-UM001G-EN-P - November 2016 125
Get Diagnostic Status from Modules by Using Explicit Messaging Appendix A
5. From the top of the Message Configuration dialog box, click Tag.
Figure 58 - Instance 821 Tag Tab
When the explicit message reads the data from the 1732ES-IB16 
module, the data appears in the MSGdata tags as shown in Figure 59
.
Figure 59 - Instance 821 MSGdata Tags