In previous posts plc247.com used some kind of HMI/PLC to control ATV312 Schneider inverter via Modbus-RTU. Today I will show you how to use a Computer to control it directly.
In order for the computer to be able to connect to the inverter, we need a USB to RS485 converter. The software used is Modbus Poll which is extremely light (3MB) and easy to use.
ATV312 Wiring Diagram
Schneider ATV312 Modbus Setting
In addition to the basic parameters of the inverter (frequency, voltage, current), you need to configure the communication parameters as follows:
COM-Menu:
+ Add = 1 (Address)
+ tbr = 9.6 (baudrate)
+ tF0 = 8E1 (Communication Config)
+ tt0 = 3.0 ( timer Com. error check )
CtL-Menu:
+ LAC = L3
+ Fr1 = Mdb
+ Fr2 = Mdb
+ CHCF = SEP
+ Cd1 = Mdb
+ Cd2 = Mdb
Register Control
>>> Motor Control Word = 8501 (dec)
Set 8501 = 6 : System Start
= 128 : System Reset
= 15 : Motor Run Forward
= 2063 : Motor Run Reverse
= 4111 : Motor Stop
>>> Frequency Setting Address = 8502 (dec)
Register Monitoring
>>> Output Frequence Address = 3202 (dec)
>>> Output Current = 3204 (dec)
“Modbus Poll” Software Configuration
+ Motor Control Command
+ Frequency Setting Command
+ Data Monitoring Read
Read 4 consecutive values starting from register 3202 > 3205
Video Tutorials
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Download software and documentation support:
+ Modbus Poll Software >>> Download Here
+ Download Schneider ATV312 Basic Manual PDF
Modbus Manual PDF
Register Address list PDF
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Thanks and best regards!
