Cell phone jammer strengthens the information security

cell  phone  jammer     is an ideal and reliable safe product.2, a passive error (Error passive): node detects that an error, rather than the error on the network, which is a passive error. At this point, the node will be issued six consecutive recessive bits, similarly filled with errors, but this error does not affect the frame on the other network nodes receive data, unless this node is sending packets of the node. 3, on the bit time, you can refer to an article devoted to the DND article: how PC's I set D [Q] I want to use PLC (PC) 5 sets of frequency control (the machine), on the PC The ID I do not know how to define, because the use of CAN standard frame format, 11-bit ID under the provisions of this bit sends me just do not understand:   cell  phone  jammer strengthens the information security.1, lower computer how to send messages up bit machine, it will not be issued their own initiative, is by the PLC to send commands to the first lower position, lower unit and then the same ID to its own data transmission up? 2, the host computer's ID can be defined how ah? CAN bus in the transmission, the nodes are the data, which the node identifier is not 11 as the data, right? If the PLC ID as 10000000002 (for example), then the next bit machine to send other information received how to do it?  cell  phone  jammer guarantees safe manufacture. If you block out the last one, do not do more, those who sent me information on the node accept, how to know which node it sent me information? Wan brother please help me look. Thank you [Q] As another example, if the PLC is that the down-bit machine to send a message. This is how to achieve it? If the lower machine bit machine to send data up by the host computer is first issued a directive to inform that the next crew of ID in the end is 00000000002 or 10000000002 it (in this system, lower machine 1, for example)? Really confused, ah.   cell  phone  jammer     protects environment. [Q] host (PC) if it is unconditional filtering mode, any node can send a message to the host, the host can also receive messages from any node, is host to a slave receiver (eg 00000000003) the message, the host identifier of the sending node will become identifier ?
apart from the sending of the receiver re [Q] 1, 2 false positives, false negatives 3-bit timer please explain the concept and their role; saw a lot of information, it is quite vague, you know, excuse me the. [Answer] I know are as follows: we say that an error is detected, are directed at a particular node. 1, the active error (Error active): When a packet transmitted on the network, the receiving node detects an error occurs on the network, rather than generating its own mistakes, they think the error is active, then the node will be issued six consecutive a dominant position, the six consecutive dominant bits will be filled on the network produces an error, resulting in all nodes on the network will receive this error, which will send the message currently being lost.