Modbus MS Card
– User Manual
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2 Presentation
2.1 Overview
2.2 Functions
The
Modbus MS Card
provides the same functions than the Network MS card described in the previous section of this
document.
The adding function consists to provide
UPS
(Uninterruptible Power Supply) data (states and measures) to be sent a computer
system.
The
JBUS
hexadecimal (MODBUS RTU) communication protocol is used in slave mode. The system provides a
communication channel with an RS485 or RS232 interface.
Note:
2 wires or 4 wires RS485 link are available.
Warning:
RS232 and RS485 communication ports cannot be used together.
JBUS/MODBUS
communication is operational 2 minutes after the startup of the card.