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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.
– User Manual
Modbus MS Card
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