Bachmann 00014647-00 BACnet Communication Module

The Bachmann 00014647-00, also cataloged as the BACnet MS/TP Communication Module, operates as a dedicated hardware component for protocol translation and data object management within building automation and industrial control networks. Configured for high-density object integration, the Bachmann 00014647-00 (BACnet MS/TP Communication Module) provides direct physical execution of deterministic network data exchange across serial communication platforms.

Hardware Specifications

Industrial Control and Processing Metrics

• Profinet / EtherNet/IP Deterministic Networks: The module facilitates the integration of BACnet MS/TP field devices into broader deterministic networks. It provides the protocol bridge necessary for mapping BACnet objects to upper-level industrial Ethernet protocols, maintaining data update consistency across diverse network segments.
• I/O Density Scaling: Designed to manage up to 128 BACnet objects, the module supports scalable I/O configurations. This capability allows the system to aggregate data from large-scale sensor arrays and actuator networks without exceeding the buffer capacity of the serial communication link, ensuring high object management efficiency.

Frequently Asked Questions

Q: Does this module support automatic baud rate detection?

A: No. The data rate must be manually configured (9600, 38400, or 115200 bps) to match the existing master/slave token passing configuration of the BACnet MS/TP network. Incorrect baud rate configuration will result in token-pass timeouts and loss of communication with field objects.

Q: Can this module be hot-swapped while the MS/TP bus is active?

A: The module is intended for fixed installation. Hot-swapping is not recommended during active data transmission, as the sudden removal of a node can disrupt the token-passing sequence and trigger communication faults in other network devices.

Field Installation Guidelines

• Bus Termination: MS/TP networks require proper termination at both physical ends of the bus to prevent signal reflections. Ensure 120-ohm resistors are installed at the terminal devices. Failure to terminate the line correctly will cause data corruption and CRC errors at high baud rates.
• Shielding and Grounding: Use shielded twisted-pair cabling for all BACnet MS/TP serial runs. Terminate the shield at a single common grounding point to avoid the creation of ground loops, which can introduce electrical noise into the differential signal lines and reduce the reliable communication distance.
• DIN-rail Mounting: Snap the module onto the DIN-rail using the integrated clip. Ensure the module is seated firmly to provide a continuous earth reference if required by the module chassis. Verify that wire entry into the screw terminals does not exert mechanical strain on the module casing.