Rockwell Automation 1790P-4R0 CompactBlock LDX I/O RTD/Resistance Input Module - Manual (Page 21)

Publication 1790-UM002A-EN-P
Installation and Wiring 2-9
Connect the PROFIBUS DP Terminal Connector to the 1790P-T4R0
Base Block
Follow these procedures to connect the PROFIBUS DP terminal connector
to the base block.
The required PROFIBUS female 9-pin D-sub connector is not supplied
with the base block - you must purchase it separately.
Before you connect female 9-pin D-sub connector to the base block,
make sure it is wired correctly as shown in the following table.
WARNING
ÿ
If you connect or disconnect the PROFIBUS
cable with power applied to this module or any
device on the network, an electrical arc can
occur. This could cause an explosion in
hazardous location installations.
Be sure that power is removed or the area is
nonhazardous before proceeding.
Table 2.3 Wiring Descriptions for 9-Pin D-Sub Connector
Pin Number: Name: Description:
1 shield Shield, Protective Ground
2 M24V Minus 24V Output Voltage
3 RxD/TxD-P Receive/Transmit-Data-P
4 CNTR-P Control-p
5 DGND Data Ground
6 VP Voltage-Plus
7 P24V Plus 24V Output Voltage
8 RxD/TxD-N Receive/Transmit-Data-N
9 CNTR-N Control-N