257
low byte of a register (HFF), so we only need to use the default 8-bit buffer in the
software to communicate.
6.
Timeout: frame timeout (ms), reply timeout (ms)
Frame: A data string.
Frame timeout: refers to the time interval between two frames of data received by the
PLC, which ensures that the PLC can distinguish the end time of receiving a frame. It
is usually used to judge whether a frame of data in PLC has been received or not. When
the interval between two frames of data is longer than the frame time-out, it means the
end of one frame of communication data.
Reply timeout: refers to the time when the PLC can not receive the response after
sending the request, waiting for the resend. If the response time is set to exceed 300 ms,
when default communicating, the PLC waits 300ms for the other party to respond. If
the response time is not received, the request will be sent again.
If you want to shorten the communication time, you can adjust the above two
parameters according to the size of baud rate.
6-3-2
.
Serial port configuration
(1)
Use the USB download cable to connect the PLC with the computer. Here the USB
download cable is the HMI download cable, as shown below, the software must switch
to XNet communication mode.
(2)
Open the programming software, click configure/PLC comm port settings. It will show
below figure:
Содержание XD Series
Страница 1: ...XD XL series PLC User manual Instruction WUXI XINJE ELECTRIC CO LTD Data No PD05 20201022 3 5 ...
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Страница 314: ...313 B Double click the middle part to modify ...