Rockwell Automation 1790P-4R0 CompactBlock LDX I/O RTD/Resistance Input Module - Manual (Page 22)

Publication 1790-UM002A-EN-P
2-10 Installation and Wiring
Once you have properly wired the connector, attach it to the base block
as shown below. Use the locking screws on the connector to fasten it to
the base block.
Connect Power to the 1790P-T4R0 Block
To apply power to the block, refer to the above illustration.
43249
PROFIBUS Connector
Green - GRD
Black - COM
Red - +24V dc
Module Power Connector
(underneath module)