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(5) Setting of transmission specifications
Set Transmission speed, Sum check, Transmission wait time, and Run write setting of the serial communication
function in the Serial tab of the PLC parameter dialog box.
• Select "Use serial communication" in communication with the personal computer or HMI.
• Set Transmission speed, Sum check, Transmission wait time, and Run write setting in the tab.
Click here to use the serial
communication function.
Set Transmission speed, Sum
check, Transmission wait time,
and Run write setting.
(6) Precautions
(a) Switching connection to GX Developer during communication with such as HMI
The CPU module can switch connection to GX Developer during communication with the personal computer or
HMI with the serial communication function.
However, the personal computer or HMI in communication by the serial communication function results in a
communication error.
For startup methods of the personal computer and HMI when they are reconnected to the CPU module, refer to
the manual for used device.
(b) Transmission speed set in the Transfer Setup screen
When "Use serial communication" is selected, the transmission speed set in the Transfer setup screen of GX
Developer is ignored.
The data set in the "Serial" tab is valid when:
• The CPU module is powered on.
• The CPU module is reset.
Figure 6.94 Serial tab
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