The good news is most access control manufacturers provide a Software Development Kit (SDK) or Application Programming Interface (API) for their systems. These allow an interface to be developed if one does not exist with an existing system. To integrate access control with BAS, an access control system must support an open communication protocol or one must be developed to bridge the gap between two systems currently not speaking the same language. If you are in the early stages of learning how to perform this level of integration, you may require assistance from an integrator with deep experience in getting disparate systems to talk to one another.
About the author: Joseph Feuling heads new business development for Environmental Systems Inc., with offices in Milwaukee and Chicago.