Omron SYSDRIVE 3G3MV User Manual page 241

Communications
Step
Step number. The step number is automatically set.
Repeat Counter
The number (N) of times to repeat the step is set within a range from 0 to 255.
It is possible to change messages by making use of the number (N).
Note In this example, the same message is sent to three Slaves with addresses differ-
ent to each other. Therefore, the number is set to 3 in word S + 1. The number of
Slaves is specified by the operand. Therefore, select Word, use the Edit com-
mand to set Data Address to Operand, and set 0N + 1 in order to select word S +
1.
In the above table, "Reset" means that the repeat counter must be reset first in the
step.
Command
Set the commands, such as Send, Recv, and Send & Recv.
Note Only the Send & Recv command is used for communications with the 3G3MV
except for sending broadcast messages, in which case the Send & Recv com-
mand is used.
No. of Retries
Set the number of times to retry the command within a range from 0 to 9.
Note It is recommended that the number be set to 3 or larger. If a transmission error
occurs due to noise, the transmission of the command will be retried. If the num-
ber is set to 3, an error will be detected if the transmission fails three times.
Send Wait Time
The waiting time until the data is sent.
Note For communications with the 3G3MV, if data is repeatedly transmitted to the
same Slave, set the waiting time to 10 ms or more.
In this example, the DSR message is sent to Slaves 1, 2, and 3 one by one. There-
fore, no send wait time is set.
Send Message and Recv Message
Set the labels of the DSR message and response to be used.
Note Make these settings after deciding the labels in Send Message Detail Settings
and Recv Message Detail Settings.
Chapter 7
7-47