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Trycom Technology TRP-C28 User Manual page 41

4-channel isolated digital input and 4-channel power relay output rs485 module, support ascii and modbus protocol.

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13. Using Modbus Poll utility

The modbus poll utility copyright belong Witte Communications, User

can download the utility to

www.mosbustools.com

Function 1: Read TRP-C28 4 channel DO status.

Function 15: Write TRP-C28 DO single channel.

Function 2: Read TRP-C28 4 channel DI status.

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