Allen-Bradley PowerFlex 4 User Manual

Appendix C
RS485 (DSI) Protocol
PowerFlex 4 drives support the RS485 (DSI) protocol to allow efficient
operation with Rockwell Automation peripherals. In addition, some
Modbus functions are supported to allow simple networking. PowerFlex
4 drives can be multi-dropped on an RS485 network using Modbus
protocol in RTU mode.
For information regarding DeviceNet or other communication protocols,
refer to the appropriate usr manual.
Network Wiring
Network wiring consists of a shielded 2-conductor cable that is
daisy-chained from node to node.
Figure C.1 Network Wiring Diagram
Controller
Master
PowerFlex 4
Node 1
5
4
PowerFlex 4
Node 2
5
4
PowerFlex 4
Node "n"
5
4
TxRxD-
TxRxD+
TxRxD-
TxRxD+
TxRxD-
TxRxD+
NOTE: The shield is connected at ONLY ONE end of each cable segment.
Shield Shield Shield
120 ohm resistor
120 ohm resistor
X X X
FRONT
PIN 8
PIN 1
TxRxD+
TxRxD-
V/T2T/L3S/L2R/L1 U/T1
W/T3
BR+ BR-DC- DC+
01 02 03 04 05
11 12 13 14 15
06 07 08 09
16 17 18 19
RS485
(DPI)
AK-00-RJ45-TB2P
V/T2T/L3S/L2R/L1 U/T1 W/T3
BR+ BR-DC- DC+
01 02 03 04 05
11 12 13 14 15
06 07 08 09
16 17 18 19
RS485
(DPI)
TxRxD+
TxRxD-

Allen-Bradley PowerFlex 4 Specifications

General

Brand	Allen-Bradley
Model	PowerFlex 4
Category	Controller
Language	English