Rockwell Automation 1790P-T4T0 CompactBlock LDX I/O Thermocouple Modules - Manual (Page 24)

Publication 1790-UM003A-EN-P - May 2002
2-10 Installation and Wiring
Connect the PROFIBUS DP Terminal Connector to the 1790P-T4T0
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
!
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