T8 Tube
27/09/2013 09:39
MR16 When the communication distance is shorter , the application of environmental disturbance is small , sometimes we just need a simple one-way communication can achieve all the features of the project , but most of the application environment is not so ideal . Project pre- cabling is professional ( such as signal lines and power lines to maintain a certain distance ) , communication distance can not be decisive ,
communication lines around the degree of interference , whether the communication lines using shielded twisted pair cable , etc. These factors gave the system tremendous impact on normal communication . Thus , the development of a complete set of communication protocols is particularly important.
The specific method is subcontracting transfer data through the data of each packet header and trailer plus the way the data package , which frame the tail to remain as a byte checksum byte . Lower machine by yourself computed checksum byte with the host computer for transmission over the checksum byte comparison to issue commands to the host computer , in the end is to re- transmit the packet data is then just issued the next packet data , so a complete package then send the next packet sent until the hair last. Such a check through retransmission mechanism , we can abandon out the probability of error , making the communication system to normal operation.
5 Conclusion
Rectification process throughout the project , we have adopted the following measures : Since communication lines and power supply between the lines very close, and the communication lines without shielding layer , so we all communication cables to be replaced ;
