Omron M1 Series User Manual page 686

Multi-function compact inverter

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8 Communications Functions

Modbus coil spec. No.

You can turn ON/OFF terminal input using Modbus communications by setting "4. RS-485 communication"

in 1st RUN Command Selection (F02)/2nd RUN Command Selection (E102). For details on the relationship

between terminal block input and ON status, refer to 7-2-1 Multifunction Input Selection on page 7-26.

The following describes the data format and register Nos. when parameters are accessed via Modbus

communication.

Data Format Specification

All data in the data field of a communications frame is represented as 16-bit binary data as shown be-

For convenience of description, 16-bit data is divided into the upper byte (8 bits from 15 to 8) and the

lower byte (8 bits from 7 to 0) and represented in hexadecimal.

For example, the following data is 1234 hex in hexadecimal representation and is described as

Data Format [1]: Integer Data (Positive), Resolution 1

Example: 1st Rated Voltage at Base Frequency (F05) = 200 V

200 = 00C8 hex →

Data Format [2]: Integer Data (Positive/Negative), Resolution 1

Example: -20

DI6 (Multifunction input 6)

DI7 (Multifunction input 7)

DO1 (Multifunction output terminal 1)

DO2 (Multifunction output terminal 2)

RO (Multifunction relay output)

16-bit binary data

M1 Series Standard Type User's Manual (I669)

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