Schneider Altivar 312 inverter (Inverter ATV312) is a family of inverters developed by electric-schneider with powerful features with frequency range from 0 to 500Hz, capacity 0.18 to 15Kw with many functions such as: Thermodynamic protection function engine, auto-start function, auto-start function to catch the load speed, reversing function, braking function, remote control connection function.
Today plc247.com will guide you to control it via Modbus-RTU protocol by using Siemens S7-200 PLC in the simplest and easiest way.
Siemens S7-200 & Schneider ATV312 Wiring Diagram
Below is a diagram of Modbus-RTU RS485 communication connection between Siemens S7-200 and Schneider ATV312 inverter
Schneider ATV312 Modbus Parameters Setting
In order for the Schneider ATV312 inverter to be controlled and monitored by Modbus-RTU, we need to install the following communication parameters for the inverter:
CON – Menu
- Add = 1 (Slave Address = 1)
tbr = 9.6 (Baudrate = 9600bps)
tF0 = 8E1 (8bit/even/1bit)
tt0 = 3.0 (Comm. timer check Error)
CtL – Menu
- LAC = L3
Fr1 = Mdb (Modbus)
Fr2 = Mbd
CHCF = SEP
Cd1 = Mbd
Cd2 = Mbd
Schneider ATV312 Modbus Registers Address
Note: Siemens S7-200 Holding Registers Address =
“VFD Address (Dec) + 40001”
>>> VFD Control Address = 8501 + 40001 = 48502 (dec)
- Set Word “48502” = 128 : VFD Fault Reset
- Set Word “48502” = 6 : VFD System Start
- Set Word “48502” = 15 : Forward Run
- Set Word “48502” = 2063 : Reverse Run
- Set Word “48502” = 4111 : Stop
>>> Frequency Setting Address = 8502 + 40001 = 48503 (dec)
+ Output Frequency Address = 3202 + 40001 = 43203 (dec)
+ Output Current Address = 3204 + 40001 = 43205 (dec)
+ Output Torque Address = 3205 + 40001 = 43206 (dec)
S7-200 Modbus Programming
+ Communication Distribution
+ S7-200 Modbus Configuration
+ Frequency Setting
+ VFD Control Command
+ Data Monitoring
Detailed Instruction Video
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Related Software and Documents
>>> Download STEP7 MicroWIN V4.0 SP9 Software
>>> Download Schneider ATV312 Manual PDF
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