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Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual
RS-485 configuration
BAUD RATE
19200
PARITY
EVEN
STOP BITS
1
DATA BITS
8
Coil registers (F1, F5, F15)
Address
Data type
Name
Description
00001–00012
Uint16
Digital outputs
Coils 1–11 are reserved for future use.
Coil 12 is the relay located on the motor drive.
Modbus RTU
Modbus RTU over RS-485 is used to communicate with the motor drive. The motor drive is configured as a Modbus
RTU slave device and the default slave address is 86. The slave address can be changed if it conflicts with another
Modbus RTU slave device.
The J1 connector on the motor drive is used for Modbus RTU communication. A shielded twisted pair cable is
recommended and the shield should be earthed only at one point, normally at the master device. The A-pin of the J1
connector is equivalent to RxD / TxD+ and the B-pin is equivalent to RxD / TxD–.
