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Overview

The RS485CBL cable uses a five-conductor shielded cable with an M12 five-pin A-coded connector. The cable has a polyurethane jacket that is UV resistant. The RS485CBL has been custom designed for sensors that use the RS-485 Modbus protocol with integrated power and signal lines. The signal lines have twisted pairs with 24-gauge conductors, and the power lines have a heavier 20-gauge wire, making the cable uniquely suitable for sensors with a higher current draw that have either short or long runs. An aluminum Mylar shield is grounded via a drain wire and connected to the M12 nut.

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Detailed Description

Wire Color Assignments and RS-485 Function Assignments

Pin # Wire Color AWG Function
1 Red 20 Sensor Power +
2 White 24 RS-485 B+
3 Green 24 RS-485 Ground
4 Black 20 Sensor Power Ground
5 Blue 24 RS-485 A-

Note:

  1. Pin 2 and Pin 5 use the twisted pair white and blue for the RS-485 line + and - signals.
  2. The twisted pair conductors have an aluminum Mylar shield connected to a drain wire. The drain wire is connected to the M12 nut.

Specifications

Material UV-resistant, black jacket
Operating Temperature Range -40° to +70°C
Nominal Impedance 100 ohm (for the twisted pair)

Compatibility

Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Sensors

Product Compatible Note
ClimaVue 40
CS241DM G2
DustVue 10

Additional Compatibility Information

The RS485CBL is known to be compatible with these Hukseflux sensors: SR30, SR300, and SR05. 

The following sensors can also use the RS485CBL with the respective adapters to bring the RS-485 signals back to the twisted pair line in the RS485CBL:

Sensor and Manufacturer Campbell Scientific Adapter Part Number
MS80SH (EKO) 44338
RC22, Mars (Atonometrics) 44339
CS241DM (Campbell Scientific) 44340
SMP 11/12 (Kipp & Zonen) 44489

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