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Serial Communications Section 6-3
Note A setting can be made to delay the transmission of data after the execution of
TXD(236).
Refer to the
SYSMAC CP Series CP1L CPU Unit Programming Manual
(W451) for more details on TXD(236) and RXD(235).
6-3-3 Modbus-RTU Easy Master Function
Overview If an RS-232C or RS-422A/485 Option Board is used, the CP1L CPU Unit can
function as a Modbus-RTU Master to send Modbus-RTU commands by
manipulating software switches. This enables easily controlling Modbus-com-
pliant slaves, such as Inverters, through serial communications.
The following OMRON Inverters support Modbus-RTU slave operation:
3G3JV, 3G3MV, and 3G3RV.
The communications mode in the PLC Setup must be set to the Gateway
Mode to enable this functionality.
Time
Execution of TXD(236)
Delay time
Transmission
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