Modbus is a data communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs). Modbus has become a de facto standard communication protocol and is now a commonly available means of connecting industrial electronic devices. Modbus is popular in industrial environments because it is openly published and royalty-free. It was developed for industrial applications, is relatively easy to deploy and maintain compared to other standards, and places few restrictions - other than the datagram (packet) size - on the format of the data to be transmitted.
VP Process has developed a series of easy to use I/O interface units and displays.
|Analog Input||8 Channel Analog Input (4 - 20 mA, 0 to 10 VDC, Thermistor) DIN Rail Mount||VP-EC-8AI||Order @ Widgetlords Electronics|
|Analog Output||8 Channel Analog Output (4 - 20 mA) DIN Rail Mount||VP-EC-8A0||Order @ Widgetlords Electronics|
|Relay Output||8 Channel Relay Contact (SPDT, 10A) DIN Rail Mount||VP-EC-8K0||Order @ Widgetlords Electronics|
|LCD Display||4 Line x 20 Character with Enclosure||VP-EC-RDU||Order @ Widgetlords Electronics|
|LCD Display||4 Line x 20 Character OEM Version||VP-EC-RDU-MINI||Order @ Widgetlords Electronics|