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3. make the program according to the descriptions in chapter 6-3-3.
Read temperature: “ : ”“R”“T”“CR”
“ : ” -------------- data start
“R” --------------- read
“T” --------------- temperature
“CR” ------------- enter, data end
Program:
When trying to communicate between PLC and other intelligent devices, it is suggested to use
serial debugging tool to determine the data format of communication, that is, protocol. The
advantages of this method are: the serial debugging tool is easy to modify and flexible to use;
after the serial debugging tool determines that communication can be successful, the PLC
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