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施耐德变频器ATV312 Modbus 通讯手册(英文).pdf
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施耐德变频器ATV312 Modbus 通讯手册(英文)pdf,施耐德变频器ATV312 Modbus 通讯手册(英文)
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BBV52816
www.schneider-electric.com
2354235 11/2008
Altivar 312
Variable speed drives for
asynchronous motors
Modbus communication manual
04/2009
BBV52816 04/2009 3
Contents
Important Information __________________________________________________________________________________________ 4
Before you begin _____________________________________________________________________________________________ 5
Documentation structure________________________________________________________________________________________ 6
Presentation _________________________________________________________________________________________________ 7
Connection to RS485 bus ______________________________________________________________________________________ 8
Configuration of the Modbus serial port ____________________________________________________________________________ 9
Modbus protocol ____________________________________________________________________________________________ 11
Appendix: Non-standard RS485 schematics _______________________________________________________________________ 16
4 BBV52816 04/2009
Important Information
NOTICE
Read these instructions carefully, and look at the equipment to become familiar with the device before trying to install, operate, or maintain
it. The following special messages may appear throughout this documentation or on the equipment to warn of potential hazards or to call
attention to information that clarifies or simplifies a procedure.
PLEASE NOTE
The word "drive" as used in this manual refers to the controller portion of the adjustable speed drive as defined by NEC.
Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. No responsibility is assumed by
Schneider Electric for any consequences arising out of the use of this product.
© 2009 Schneider Electric. All Rights Reserved.
DANGER
DANGER indicates an imminently hazardous situation, which, if not avoided, will result in death or serious injury.
WARNING
WARNING indicates a potentially hazardous situation, which, if not avoided, can result in death, serious injury or
equipment damage.
CAUTION
CAUTION indicates a potentially hazardous situation, which, if not avoided, can result in injury or equipment
damage.
CAUTION
CAUTION, used without the safety alert symbol, indicates a potentially hazardous situation which, if not avoided,
can result in equipment damage.
The addition of this symbol to a Danger or Warning safety label indicates that an electrical hazard exists, which will result in
personal injury if the instructions are not followed.
This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow
this symbol to avoid possible injury or death.
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