Rockwell-automation MD60 User Manual Version 3.0 Manual de usuario Pagina 117

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RS485 (MDI) Protocol F-1
APPENDIX F
RS485 (MDI)
Protocol
MD60 drives support the RS485 (MDI) protocol to allow efficient
operation with Rockwell Automation peripherals. In addition, some
Modbus functions are supported to allow simple networking. MD60
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 user manual.
Network Wiring
Network wiring consists of a shielded 2-conductor cable that is
daisy-chained from node to node. See figure F.2.
Only pins 4 and 5 on the RJ45 plug should be wired. The other pins
on the MD60 RJ45 socket contain power, etc., for other Rockwell
Automation peripheral devices and must not be connected.
Figure F.1 – Sample Network
Controller
Figure F.2 – Network Wiring Diagram
Master
MD60 Drive
Node 1
4
5
MD60 Drive
Node 2
4
5
MD60 Drive
Node "n"
4
5
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
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