Abstract
This document describes the wiring for RS-485 connection between Redlion device and third party RS485 device.
Products
Red Lion Controls CR1000 Human Machine Interface (HMI), CR3000 HMI, Data Acquisition (DA10, DA30), Data Station Plus, FlexEdge™ (DA50A, DA70A), G3 HMI, Graphite® Controller, Graphite HMI, Modular Controller, and Productivity Station™
Use Case
Communicating with devices that can talk via RS485 using any of the protocols/drivers supported by Redlion Crimson Software.
Required Software:
Crimson 2.0, Crimson 3.0, Crimson 3.1 & Crimson 3.2
Notes:
Pin 1 and 2 are typically - and + while Pin 6 is common. When the wiring is correct, you will see both Red and Green LED blink rapidly. If you see solid Red and blinking green, it means polarity need to be reversed and as a result you should swap your Pins 1 and 2.
You can actually use any of the four combinations for 2 wire RS485 wiring. Pins 1 and 2 or Pins 2 and 7 or Pins 7 and 8 or Pins 1 and 8 since Pins 1 and 7 are internally jumpered and similarly Pins 2 and 8 are also internally jumpered as implied by the image below
Pin 5 (TxEN) is used only for Allen Bradley DH485 communication and should be ignored for other protocols/drivers
For 4 wire RS485 communication, you will use Pins 1, 2, 3 and 4 with Pin 6 being used for Common.
Redlion sells a cable that goes from RJ45 connector on one end to bare wires on the other end. Part number is CBLGEN03
Below is a picture with more details on this cable
Disclaimer
It is the customer's responsibility to review the advice provided herein and its applicability to the system. Red Lion makes no representation about specific knowledge of the customer's system or the specific performance of the system. Red Lion is not responsible for any damage to equipment or connected systems. The use of this document is at your own risk. Red Lion standard product warranty applies.
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