Siemens 550-974P10 RS485 NETWORK REFERENCE TERMINATORSiemens 550 974P10 RS485 NETWORK REFERENCE TERMINATORThe Siemens Point Pickup Modules (PPM) are expansion I O devices that communicate on a BACnet master slave token passing (MS TP) network, allowing for the incorporation of a cluster of remote points into the Building Automation Station over the MS TP network. The PPM family leverages the MS TP network to extend the reach of any BTL listed BACnet Building Controllers application program. Each