Communication Module DVPSCM12/52-SL
DVP-PLC Operation Manual
24
Transmitter Delay: The default time interval between the instructions is 0 ms, that is, the
next instruction is transmitted immediately after the reply is received.
Transfer Mode:
ASCII or RTU
Communication Retry Times: It means the number of times the communication has been retried
after the communication fails. If there is still no response, the
communication stops.
6.3 UD Link (User-defined Link)
UD Link provides non-Modbus RS-485/RS-422 link function. The packets can be edited according to the
communication formats. The steps of establishing UD Link are as follows:
(1) Create a groupÆ Edit TX packets and RX packetsÆ Create commandsÆ Trigger and execute the
instructions as a group
(2) Create a group Æ Edit TX packets and RX packets Æ Create commandsÆ Create other groupsÆ
Create sequencesÆ Trigger and execute the instructions as sequences
First of all, establish the transmission instructions (TXs) and the reception instructions (RXs) in the group.
Then, set the execution sequence and the number of times for TXs and RXs through the commands.
Finally, trigger and execute the instructions as a group. In addition, if various groups of group packets are
required in a large system, the user can create the groups in the sequences, and set the execution
sequence.
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