myCNC Online Documentation

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=====Modbus Devices available======

The following Modbus devices are currently available:
  * WP8025ADAM
  * WP8026ADAM
  * WP8027ADAM
  * WP8028ADAM
  * WP9038ADAM

The devices differ in the number of digital or analog inputs/outputs. Below is a table with the description for the Modbus devices currently sold through the [[https://shop.pv-automation.com/|myCNC shop]]:

^ Device ^ Description ^
| WP8028ADAM| 8 digital inputs, 8 digital outputs |
| WP8027ADAM | 16 digital outputs, 0 inputs (write-only) | 
| WP8026ADAM | 16 digital inputs, 0 outputs (read-only) |
| WP8025ADAM | 8 relay outputs (normally open) |
| WP9038ADAM | 6 analog inputs, 4 digital inputs, 4 digital outputs. The digital inputs/outputs work similarly to the WP8028 |

The main features of each of the Modbus devices are listed below: 

===WP8025ADAM===
{{:mycnc:modbus-wp8025adam-2.jpg}}

  * 8 relay outputs Modbus device
  * Relay contact capacity: 2A/250VAC, 2A/30VDC
  * External power suppy: DC 9V-30V/2W
  * 125x73x35mm 

Relay output diagram: 
{{:mycnc:8025-relay.jpg}}

===WP8026ADAM===
{{:mycnc:modbus-wp8026adam-2.jpg}}

  * 16 digital inputs Modbus device
  * DC 9V-30V/2W power supply
  * 125x73x35mm

Default settings: 9600 baud, 8, N, 1

Digital input diagram:
{{:mycnc:8026-digital-input-diagram.jpg}}    

===WP8027ADAM===
{{:mycnc:modbus-wp8027adam-2.jpg}}

  * 16 digital outputs Modbus device
  * DC 9V-30V/2W power supply
  * 125x73x35mm

Digital outputs diagram:
{{:mycnc:9038-digital-output-diagram-2.jpg.png}}

===WP8028ADAM===
{{:mycnc:modbus-wp8028adam-2.jpg}}

  * 8 digital inputs, 8 digital outputs
  * DC 9V-30V/2W power supply
  * 125x73x35mm

Digital inputs diagram:
{{:mycnc:8028-digital-inputs-diagram.jpg}}

Digital outputs diagram:
{{:mycnc:9038-digital-output-diagram-2.jpg.png}}

===WP9038ADAM===
{{:mycnc:modbus-wp9038adam-2.jpg}}

  * 6 analog input channels, 4 digital output and 4 digital input channels	
  * Analog input type: DC 0-20mA/4-20mA	
  * Analog input accuracy: ±0.02mA	
  * External power supply: DC 9V-30V/2W	
  * 125×73×35mm	

Digital inputs diagram:
{{:mycnc:9038-digital-input-diagram.jpg}}

Digital outputs diagram:
{{:mycnc:9038-digital-output-diagram-2.jpg.png}}

Analog inputs diagram:
{{:mycnc:9038-analog-input-diagram.jpg}} 

The devices can be used by plugging them into the controller directly, and using the Hardware PLC /  Config settings to control, or by plugging them into the host computer using a USB cable provided in the kit. The setup and the configuration dialogs are described in the [[plc:plc_modbus_api|PLC/Modbus API]] and [[mycnc:host_modbus_api|Host Modbus API]] manuals.