GE Industrial Solutions GE Zenith Series DPB - Manual (Page 51)

43 Installation & Operation Manual, GE Series DPB Busway
March 25, 2013, Rev 0 GE Confidential
Series DPB Busway Installation & Operation Manual
COMMUNICATIONS
The Series DPB Busway BCMS is capable of providing remote communications information in four-wire or two-wire
serial configurations via Modbus™ RTU protocol. It is always suggested to use a shielded twisted pair cable for the
communications interface.
The standard communication setup is through RS422/RS485, four-wire interface with the Tx and Rx on separate pairs due to
the ability to have increased speed on the communications with the Tx and Rx separated. However, it is possible to connect
the Remote Communications to a two-wire network.
The default communications parameters for the interface are 9600 baud, 8 bit, even parity, and 1 stop bit.
There are two different levels of firmware available – BCMS Basic -Current only, and BCMS Plus – Current Plus Voltage.
See Appendix A: TAP OFF BOX MONITORING SPECIFICATIONS, and Appendix B: END FEED (INPUT PM BOARD) MONITORING
SPECIFICATIONS.