From Wikipedia:
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.[1]
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.
Type | Description | Part No | Ordering | |
---|---|---|---|---|
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 |