Concept
MP-V BACnet MS/TP Support
The MP-V controllers can be reconfigured to communicate with the hosting server based on the BACnet MS/TP protocol, instead of the BACnet/IP protocol. An adapter is required for converting the controller RS-485 Com port with RJ45 interface to screw terminals.
The MP-V BACnet MS/TP support only applies to MP-V controllers with part numbers SXWMPV7AX10002 and SXWMPV9AX10002. Pour plus d'informations, voir Differences Between MP-V Hardware Versions .
The support for connecting MP-V controllers to a BACnet MS/TP (RS-485) network for communication with an automation server (AS-P or AS-B) enables retrofitting of MNB and b3 BACnet devices on the network while reusing parts of the existing cabling and equipment. Pour plus d'informations, voir RS-485 Communications .The support for both BACnet IP and BACnet MS/TP protocols also facilitates a transition from a BACnet MS/TP (RS-485) network to an IP based network. The controller can be configured to use either protocol.
“MNB BACnet devices” refers to Schneider Electric (TAC I/A Series) MicroNet BACnet (MNB) zone controllers.
“b3 BACnet devices” refers to Schneider Electric (Andover Continuum) b3 BACnet zone controllers.
An RJ45 to screw terminal block adapter and a separate connection cable is required to connect the MP-V controllers to the BACnet MS/TP (RS-485) network. Pour plus d'informations, voir RS-485 Adapters .
The RS-485 adapters are available in two models:
Isolated RS-485 Adapter (SXWISORS48510001)
Non-isolated RS-485 Adapter (SXWNISORS48510001)
The RS-485 adapters can be ordered from Schneider Electric using the above part numbers.
The isolated adapter is designed to be used when connecting MP-V controllers to a BACnet MS/TP (RS-485) network with MNB devices.
The non-isolated adapter is designed to be used when connecting MP-V controllers to a BACnet MS/TP (RS-485) network with b3 BACnet devices.
The cable is not included and needs to be purchased separately.
To connect the adapter, it is recommended to use a Cat 5 (or higher) unshielded, straight-through wired cable with eight conductors (four twisted pairs) and RJ45 connectors. The recommended maximum cable length is 0.3 m (12 inches). The wire size (cross-sectional area) should be 22 to 26 AWG (0.34 to 0.14 mm²). When MP-V controllers are installed in a space that handles conditioned air or return air, the BACnet MS/TP (RS-485) network cables and IP network cables frequently must be plenum-rated to meet applicable building codes.
Pour plus d'informations, voir Wiring .
You need to configure the RS-485 Com A (RJ45) port on the MP-V controller for connection to the BACnet MS/TP (RS-485) network. The RS-485 Com A port can either be used for connection of an isolated adapter or a non-isolated adapter
Pour plus d'informations, voir MP-V Communication Ports .
Pour plus d'informations, voir Allocating Flexible Ports .
As part of the commissioning process for the device, you also need to configure the baud rate for the automation server BACnet MS/TP (RS-485) bus. Pour plus d'informations, voir MS/TP Communications Baud Rate .
In retrofit projects with MNB devices, the MP-V controllers can be mixed with MNB devices on the BACnet MS/TP (RS-485) network.
The isolated RS-485 adapter is used for connection of the MP-V controller.
The isolated RS-485 adapter is connected to the RS-485 Com A port on the MP-V controller.
In retrofit projects with b3 BACnet devices, the MP-V controllers can be mixed with b3 BACnet devices on the BACnet MS/TP (RS-485) network.
The non-isolated RS-485 adapter is used for connection of the MP-V controller.
The non-isolated RS-485 adapter is connected to the RS-485 Com A port on the MP-V controller.
Hardware Overview
MP-V Controllers
RS-485 Adapters
RS-485 Communications
Wiring
MP-V Communication Ports
Differences Between MP-V Hardware Versions
Allocating Flexible Ports
MS/TP Communications Baud Rate
Configuring MS/TP Network Settings