Hello, today plc247.com will continue Series using MicroLogix 1100 PLC which uses RS 485 port for “Modbus-RTU” communication to peripheral devices.
Today plc247.com will guide you to use Micrologix 1100 PLC to control DELTA MS300 inverter, this is a new type of inverter of Taiwan electronics company with low price but high quality.
Micrologix 1100 & DELTA MS300 “Wiring Diagram”
Below is a connection diagram between Micrologix 1100 PLC and DELTA MS300 (using Module 1763-NC01, if you don’t have one, you can connect it directly to RS232/485 port)
DELTA MS300 VFD Modbus-RTU Configuration
In order for the DELTA MS300 inverter to communicate via Modbus-RTU RS485, you need to set the following communication parameters:
- P00.20 = 1 (Frequency Control via RS485)
- P00.21 = 2 (Motor Control via RS485)
- P09.00 = 1 (Address Slave = 1)
- P09.01 = 9.6 (Baudrate = 9600bps)
- P09.02 = 0
- P09.03 = 1.0 (Time Com. Err)
- P09.04 = 14 (Modbus-RTU 8/E/1)
Register for Control
Note: MicroLogix 1100 Address = “VFD Address (Dec) + 1“
+ Motor Control Address = 2000 (hex) + 1 = 8192 (dec) + 1 = 8193
- Set Word 8193 = 18 >>> Motor Forward Run
= 34 >>> Motor Reverse Run
= 1 >>> Stop
+ Frequency Setting Address = 2001 (hex) + 1 = 8193 (dec) + 1 = 8194
Data Monitoring Register
+ Frequency Command = 2102 (hex) + 1 = 8450 (dec) + 1 = 8451
+ Output Frequency = 8452
+ Output Current = 8453
+ DC-BUS Voltage = 8454
+ Output Voltage = 8455
MicroLogix 1100 Communication Settings
+ Channel Configuration
MicroLogix 1100 Programming
+ Read/Write Distribution
+ Motor Control Command
+ Frequency Reference Command
+ Data Monitoring Command
Project Tutorial Video
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Recommended Document
+ Allen Bradley MicroLogix 1100 Manual PDF Download
+ DELTA MS300 Manual PDF Download
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