What are the recommendations/limitations around using RDM2 and mRDM2 Reader Expander Modules on SP-ACX and SP-AC1 controllers?
- RDM Expander Modules
The number of RDM2 and mRDM2 modules which can/should be used on an SP-C/SP-C-Web is well documented, but it is not so clear what limitations exist when using these modules on other SP Controllers.
RDM2 and mRDM2 modules are NOT supported on an SP-ACX.
RDM2 and mRDM2 modules are NOT supported on an SP-AC1 controllers when AC1 modules are also connected on the same communication bus.
The SP-AC1 does actually have the potential to support RDMs, but mixing both Legacy(AC1) and current(RDM) modules runs the risk of overtasking the controller, especially when approaching maximum door limits.
SP-ACXs and SP-AC1s are primarily designed as transitional controllers to allow Continuum ACXs and Continuum NetControllers to be transitioned smoothly into a new Security Expert system. As such the use of current Reader Expander modules such as RDM2s and mRDM2 should be avoided and left strictly to SP-C and SP-C-Web controllers.