I'm just going to put this out there in case anyone has any questions on bacnet or modbus. If you want to know about different software or troubleshooting techniques feel free to ask. I am actually surprised that I don't really see any questions on these topics.
Since you seem to give the impression of being the answer-man regarding Building Automation Systems (BAS), perhaps you can generate some interest to benefit your fellow electricians.
The protocols BacNet and Modbus are the two most publicized because they are mostly applied to industries like HVAC, Electrical Systems and Power Distribution.
The other protocol that you missed (intentionally?) and easiest to learn is LonWorks. It doesn't need a bachelor's degree in electrical or industrial engineering to be certified.
It can use Microsoft Windows for interface. Electricians can apply for certification but it needs thorough knowledge of PLC and networking. Binary background is a must.
At this juncture--I can't think of a question to ask you because you did not specify your line of expertise in terms of protocols.
I am a certified Microsoft Network Engineer. (MSCE)
(Sailing enroute to the 'birthplace' of VFD/PWM . . .Finland)