Baseline Inc

- Two-Wire Coders


The secret to Baseline’s biLine two-wire technology lies in Baseline’s patented biCoders™ (two-wire decoders).  Baseline’s biCoders are the only true bi-directional two-wire devices in the industry because Baseline’s biCoders not only receive commands from the controller, they also send real-time information back to the controller. Plus, Baseline’s biCoders have built-in diagnostic LED lights that tell you at a glance whether the device is working.

This smart technology also enables you to assign any biCoder to a zone or function from the controller after the biCoder has been installed in the field.  With a multi-station biCoder, you can assign any station to any zone, in any order. These features will save you hundreds of hours because Baseline has eliminated the need for expensive programming equipment or multiple trips into the field just to assign zones to a device.  And diagnostics and repairs are a whole lot easier too. 

Baseline’s biLine technology and biCoders can operate up to 15 zones concurrently at distances further from the controller than any other product in the market.  More zones running means a shorter water window, and a greater allowable wire length means fewer controllers to manage. 

Baseline’s biCoders are available in single, dual, and quad-station configurations.  They’re also available for flow and event devices. 

biLine Features

  • The biLine II protocol for two-wire operates below 30 VAC RMS
  • True two-way communication that uses a 9-byte packet for commands and replies
  • Search for and identify all devices connected to the two-wire and list them in the controller
  • Address devices by serial number by assigning each zone address a device serial number
  • Re-address any device from the controller by re-assigning the device's serial number to a new zone address
  • Any station on a multi-station biCoder can be assigned from the controller to any zone address in any order
  • Detect and repair from the controller all address conflicts for devices that are connected to the two-wire
  • Automatically detect communication collision on the two-wire and resend any message experiencing an error
  • Search for and assign each decoder serial number to a zone address report whether or not a solenoid is present 

biCoder Specifications

  • Baseline’s biCoders are available in single, dual, and quad-station configurations.  They are also available for flow and pause devices.
  • All biCoders are fully sealed, submersion-proof, and approved for direct bury.
  • Automatically shut down any attached solenoids if communication is lost with the controller
  • Shock resistant
  • Freeze/heat resistant -4oF to 140oF (-20°C to 60°C)
  • Manufactured with 24 inches of 16-gauge PVC jacketed solid core wire to connect to the two-wire and 24 inches of 18-gauge PVC jacketed stranded core wire to connect to the valve wire
  • Includes a built-in amperage meter that accurately measures and diagnoses valve solenoid electrical problems such as “no current,” “station short,” or “over current” 
  • Multi-station biCoders have color coded wires for each station.
  • All biCoders have built-in LEDs that blink during communications on the two-wire side and remain lit when power is supplied to the valve.
  • Run up to two typical solenoids up to 150 feet away from valve decoder using standard 14-gauge irrigation wire per station wire (excluding BL-5201)
  • Built-in surge protection
  • All biCoders carry Baseline’s standard conditional five-year exchange warranty.
  • Pause biCoders are able to interface and read any normally closed switch pause device (including rain, wind, pressure, tank floats, and temperature). 

Solenoid Requirements

  • Requires typical solenoid with approximately 400 mA inrush current with approximately 200 mA holding current

Two-Wire Specifications

Operating Voltage: 600 V RMS max

Temperature Rating: 140°F (60°C)

In addition, the two-wire must meet one criterion within each of the following categories:

Outer Jacket

  • High density polyethylene (HDPE) between 0.035” and 0.048” thick, conforming to ICEA S61-402 and NEMA WC5

Conductors (two of the same gauge, conforming to ASTM B-33, B-3, or B-8)

  • Bare copper
  • Tin coated solid copper

Conductor Arrangement

  • Conductors that are twisted
  • Conductors that are laid in parallel

Conductor Insulation

  • Low density, high molecular weight polyethylene (PE) with a thickness of 0.045”
  • PVC conforming to UL-493 or UL-719 for thermoplastic-insulated style UF (Underground Feeder)

Conductor Color Coding

  • Black & red (recommended)
  • Black & white
  • Blue & red

Examples of Approved Wire

  • Coleman Cable #51452
  • Paige P7072D, P7296D, P7350D, and P7354D
  • Regency 14/2 and 12/2 Maxi Cable, Toro Decoder Cable, and Hunter Decoder Jacketed
  • Service Wire DEC12/2BE and DEC14/2BE

Two-Wire Path Topology Specifications

  • The two-wire path may be looped, spliced, or branched permitting extensions of the path in multiple directions.
  • Make all splices in a valve box.
  • The distance from the controller to the end of any one wire run must not exceed the maximum distance specified for the gauge of wire as described in the tables for Wire Run Lengths.

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