Sep 09 2016
2

What is a BACnet Instance Number?

By Matthew Scheffel

A BACnet Instance Number Is a Globally-unique Address An often misunderstood and neglected topic is the BACnet instance number of a BACnet device. Neglecting to think about this number at installation might not bite you today, but it remains as technical debt that complicates future work. It’s a number that identifies a device uniquely on…

Sep 01 2016
0

RS-422 – The Other Bus-meat

By Matthew Scheffel

I encountered an RS-422 bus for the first time recently and it threw me through a bit of a loop! The device was a Modbus/RTU slave device and so I anticipated a RS-485 connection as per usual, but that was not the case. It’s the same cable, and the same essential signalling standard, but if…