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11
COMMUNICATIONS
The product has various communication options available:
▪
A USB slave connection allows serial communications with an external computer. This
connection is located on the left-hand side of the Input board (see 0).
▪
An Ethernet connection using the MODBUS/TCP protocol. This connection is located
on the bottom left-hand side of the input board (see 0).
▪
Up to two further communications channels are available. However, if a DNP3 module
is fitted (one maximum) this limits the available communication channels to one.
The product supports simultaneous communication on several channels – up to three
masters over Ethernet, and one master on each of the serial connections (including the
USB connection) as listed in Table 11-1.
Table 11-1: Product communications channels
Channel
Carrier
USB
USB
RS-232 Isolated
RS-485 2-wire
RS-485 4-wire
PSTN
GSM/GPRS
CDMA
RS-232 Isolated
RS-485 2-wire
RS-485 4-wire
PSTN
GSM/GPRS
CDMA
Ethernet Ethernet
*Note:
Channel A is disabled when DNP3 over Ethernet is selected.
The options listed above are available at the time of printing – other options may
become available. (Contact the GE Customer Service Centre for further information.)
MA-005 - Minitrans Installation Manual - Rev 4.5
Protocol
MODBUS /
MODBUS /
RTU
TCP
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MODBUS/
DNP 3.0 IEC 61850
ASCII
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13-Aug-20
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Page 35 of 86
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