Important Notices!
Thank you for choosing LEGRAND UPS System to supply your Critical Application.
This manual contains important information about commissioning, usage and technical properties of the
UPS. It also contains safety information for operator and instructions to secure your critical load. Applying
the recommendation detailed in this manual is necessary to use UPS safely and correctly.
The manufacturer reserves the rights to change the technical specications
and design without notice.
LEGRAND reserves the rights to change the information in this document
without notice. Refer to http://ups.legrand.com/ web site to dowload last
release and translations.
Units that are labelled with a CE mark comply with the Standard: EN 62040-1 and EN 62040-2.
Read the manual completely before working on this equipment!
Keep this manual in UPS’s front cover’s pocket for easy consultation!
Reproduction, adaptation, or translation of this manual is prohibited without prior
written permission of LEGRAND Company, except as allowed under the copyright laws.
62
MODBUS END JUMPER (J1):
If the UPS is connected at
the end of the bus line ; the
jumper should be congured as
described.
The RS485 dierential line consists of three pins:
• D+ is non-inverting pin (TxD+/RxD+)
• D- is inverting pin (TxD-/RxD-)
• Middle Pin is reference pin (optional GND)
Middle Pin is the reference potential used by the
transceiver to measure the D+ and D- voltages.
8.5. RS485
RS485 with MODBUS protocol is used in a wide range of automation systems for Industrial Process
monitoring or for Building Management Systems. This communication link allows monitoring UPS status
and measurements with such systems.
RS485
RS485
D+
D-
Communication Parameters
Baud Rate 2400
Data Bits 8
Stop Bits 1
Parity No Parity
Flow Control No Flow Control
Communication Type RTU
Table.12
DEFAULT MODBUS END
Maximum quantity of address to be read in one transaction (query) is 40.
Don't exceed this limit, otherwise ups will not reply properly.
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