GE Intellix BMT 330 User Manual page 24

Figure 8: Available communication options between Intellix™ BMT 330 and the customer network
The optional Kalkitech module provides a MODBUS TCP, DNP3.0 or IEC61850
interface on copper or optical fibre physical layer (refer to the BMT330 Installation
Manual for the module's setup instructions). These interfaces are multi-master.
However the downloading of historical data from the Intellix™ BMT 330 requires a
direct connection to Intellix™ BMT 330 via a transparent channel (MODBUS RTU), also
provided by the optional Kalkitech module. This transparent channel is a single-
master communication port. Simultaneous and independent use of 1) the multi-
master MODBUS TCP, DNP3.0 or IEC61850 interface and 2) single-master direct
connection via the transparent channel is permitted.
Note that a common communications error occurs when an already open single-
master port is attempted to be opened by a second master.
Page 24
Intellix
™
BMT330UM v1.0
BMT 330 User Manual
20-Jun-16