KellyGraham specialise in installation, configuration and troubleshooting of all types of serial device communications hardware connected over an RS485 2 wire network. This is the most common arrangement found on solar farm installations in the UK. We can help diagnose issues with MODbus and CANbus equipment installed on your site using specialist hardware and software, including mbpoll and modpoll, to test communication at serial level or via a gateway.
Field device-level equipment, for example, string combiner boxes, pyranometers, temperature sensors and weather stations will most commonly be connected over an RS485 network, 2/3 wire arrangement back to a central hub/serial gateway. The gateway will then convert the serial data to be able to travel back to the main comms equipment via the Ethernet standard. The most common serial protocols used are CANbus and MODbus. Configuration of serial device communications equipment and its associated gateway is crucial for data exchange to take place; these devices are not plug & play.
We can help with all makes and models of serial device communications hardware installation and configuration and ensure you have configuration backups and documentation to ensure a quick turnaround to minimise downtime of failed equipment.
We have had many years of troubleshooting serial line bus faults and issues. Common issues include incorrectly set or missing terminating resistors, use of drop lines, crossed-over cabling, breaks, and the use of incorrect interfaces, to name a few.
