Allen-Bradley 1791ES-IB8XOBV4 - Page 104

104 Rockwell Automation Publication 1791ES-UM001G-EN-P - November 2016
Appendix A Get Diagnostic Status from Modules by Using Explicit Messaging
Figure 35…Figure 39 show the MSG instruction parameters to read Instance
852 from the 1791ES-IB8XOBV4 module.
Figure 35 - Instance 852 Configuration Tab
Instance 852 (354 hex) is 5 bytes in length, so the destination tag MSGdata
must be at least 5 bytes in length to hold this data. The size is DINT[2] or 8
bytes (see Ta b l e 34
).
3. Click the Communication tab.
This dialog box requires the path to the module.
4. Click Browse to select the module that the MSG reads.
Table 34 - Layout of Instance 852 (354 hex) – 1791ES-IB8XOBV4 Module
Instance Hex
(decimal)
Connection
Type
ByteBit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0
354 (852) Safety and
standard
0 Safety Input 7 Safety Input 6 Safety Input 5 Safety Input 4 Safety Input 3 Safety Input 2 Safety Input 1 Safety Input 0
1Safety Input 7
Status
Safety Input 6
Status
Safety Input 5
Status
Safety Input 4
Status
Safety Input 3
Status
Safety Input 2
Status
Safety Input 1
Status
Safety Input 0
Status
2Safety Output
7 Status
Safety Output
6 Status
Safety Output
5 Status
Safety Output
4 Status
Safety Output
3 Status
Safety Output
2 Status
Safety Output
1 Status
Safety Output
0 Status
3Safety Output
7 Monitor
Safety Output
6 Monitor
Safety Output
5 Monitor
Safety Output
4 Monitor
Safety Output
3 Monitor
Safety Output
2 Monitor
Safety Output
1 Monitor
Safety Output
0 Monitor
4 Reserved Reserved Input Power
Error
(1)
Output Power
Error
(1)
Reserved Reserved Muting Lamp 7
Status
Muting Lamp 3
Status
(1) This data is only diagnostic data. This data does not have safety integrity.