RAD-900-...
88/138
PHOENIX CONTACT 3827_en_B
Setting telegram pauses, based on the example of Modbus/RTU
A frame is also referred to as a telegram. The length of the transmission pause between the
telegrams depends on the set data rate. The beginning and end of a telegram is recognized
by means of a time condition. A pause of 3.5 characters means that the telegram is
complete and the next character is to be interpreted as the slave address. A telegram must
therefore be sent as a continuous data flow. If there is an interruption of more than 1.5
characters within a telegram, the data will be discarded by the receiver.
If the master is not able to transmit the successive characters quickly enough and the
communication is aborted, you must increase the minimum pause time (T
FrameEnd
) between
the individual characters of a telegram. Frames with a length of 1480 characters can be
transmitted by the Radioline wireless system.
• In order to adapt data transmission to other protocols, it is possible to adapt the
T
FrameEnd
and T
IdleMin
parameters. Set the interface parameters under “Individual
Settings”.
Figure 6-6 PSI-CONF software: Individual Settings
To Next Page
Loading...
