7 PLC programming
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USB download operation is simple, no need to set any settings to download directly after
connecting the USB cable. In addition to USB download function, H0U also supports RS485
download function. The user can use the RS232-RS485 converter to connect the two RS485 port
to the COM0 port of H0U. But this function is an alternate port for firmware update, which is not
available for regular products. If the customer needs to this function, they can contact the
relevant personnel of Inovance.
3) RS485 communication function
H0U has 2 RS485 functions, supports 1:1, N:N, computer link protocol and Modbus RTU
protocol. Modbus RTU protocol supports both master and slave. The communication method and
the definition of related special software are consistent with the RS485 function of H2U series
PLC.
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