330103-00-03-05-02-05 Proximity Probes

The party of 330103-00-03-05-02-05 has the right to send, and after sending a frame, the sender gives the right to send to the receiver.
The basic format of a sending frame is:
@ Machine number Identification code Full text FCS *CR
Where: @ is the frame start flag
Machine number The unique number assigned to each PLC in the network communication.
Identifier Command code for the frame
Text Used to set command parameters
FCS Frame check sum
Terminal Command terminator

330103-00-03-05-02-05 The basic format is:
@ machine number, identification code, end code, body, FCS *CR.
Where: @ machine number Identification code Full text is equivalent to the meaning of sending frame
End code Returns the status of the end of the command with or without errors.
The split frame with more than 131 characters will not be discussed here.

330103-00-03-05-02-05 communication starts with a test frame command of one string of characters issued by the host computer to the PLC of the network in turn. In order to make full use of the upper computer CPU time, you can make the upper computer and PLC work in parallel, in the upper computer waiting for the PLC to answer the signal at the same time, so that the CPU to deal with other tasks or threads. After receiving a complete frame from the host computer, a PLC will first judge whether it is its own code, if not, it will ignore it, and if it is, it will send a call answer signal. The host computer to receive the answer signal, and send test data comparison, if the two are not wrong, the signal can be issued for data communication, transfer to normal data communication, otherwise the user is prompted to check the line to re-test or communication failure.