Chapter 4 How to access ET-7000
ET-7000 AIO User Manual, Apr. 2009, V1.04, EMH-011-104----------96
4.2.2. Function Codes Supported
Modbus function codes are different both the analog and digital types.
Table 4-1 ET-7000 Modbus Function Code
Modbus Command (Hex) Protocol Description
01 Read multiple coils status for DO
02 Read multiple input discrete for DI
03 Read multiple registers for AO
04 Read multiple input registers for AI
05 Write single coil for DO
06 Write single register for AO
0F Force multiple coils for DO
10 Write multiple registers for AO
4.2.3. Modbus Register address table
In addition to the Web Configuration Page, the custom’s software that supports Modbus
protocol can be used to issue Modbus command to the ET-7000 module.
For more details regarding the Modbus address of the ET-7000 module, please refer to
Appendix C: Modbus Register Table.
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