Chapter 6 Communication Mode
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6.4.2
User project structure
Following user project structure is required in case of usage of Modbus slave mode of EH-SIO.
Figure 6.51 User project structure (Modbus slave)
[ STEP 1 ]
To configure communication port of EH-SIO as Modbus slave mode by using TRNS9 command.
EH-SIO will operate automatically by completion of initial setting of Modbus slave mode. Specific user program
is not required to make communication.
Once EH-SIO specified Modbus slave mode, even if CPU module stop operation has been done, EH-SIO
continues Modbus communication. To stop this operation of EH-SIO, reset operation of EH-SIO is required.
Regarding initial setting, detailed explanation is shown in subsequent paragraphs.
Initial setting
Receiving query
Sending response
TRNS 9
RUN
No needs user project
Содержание EH-150 Series
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