
13
INZ-TN5A0506-E
5.6 Transmission Control Procedure
(1) Transmission
procedure of master station
The master station must proceed to a communication upon conforming to the following items.
(1-1) The command message, must be sent after an empty space of at least 48 bit time.
(1-2) Interval between bytes of 1 command message is smaller than 24 bits time.
(1-3) After sending a command message, for less than 24 bit time the master will enter receiving
standby.
(1-4) After receiving the response message, the next command message must be sent after at least 48
bit time. [Same as in (1-1)]
(1-5) For safety reasons, create a framework where the master checks the response message, and if
there is no response or an error occurs, retry at least three times.
Note) The definitions written above are for the minimum required value. For safety reasons, we
recommend creating a master side program that keeps margins two to three times as large.
Concretely, it is advised to arrange the program for 38400 bps with 5ms or more for vacant statues
(1-1), and within 1ms for byte interval (1-2) and changeover from sending to receiving (1-3).
Содержание ZKM
Страница 37: ......