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3. n : 1 Connection (Multi-link 2) 3-15
Serial Communications
[Send Delay Time] (0 to 255) (Unit: ×1 msec)
Set a time delay in sending the response to the
PLC after receipt of data from the PLC. Normally
use the default setting (0).
[Total]♦ (2 to 4)
Set the total number of the V7 series included in the multi-link 2 connection.
[Retry Cycle] (×10)
Set the number of cycles before the master station sends an inquiry for restoration
to the slave station that has a communication problem (= system down). When a
slave station has a problem, it is temporarily removed from the communication
targets, and the master station sends an inquiry for restoration every number of
cycles specified for [Retry Cycle]. This setting does not affect the communication
speed if no problem is occurring; however, if there is any problem, it does affect the
communication speed.
• When the setting value is small:It will not take a long time before restoration.
• When the setting value is large: It will take a longer time before restoration.
[Baud Rate of Multi-Link] ♦ (4800, 9600, 19200, 38400, 57600, 76800, 115 kbps)
Set the baud rate used for communications between the V7 series. The setting
must be the same as other V7 series on the same communication line.
* For [Total] and [Baud Rate of Multi-Link], the same values must be set on all the V7
series that are connected in the same communication line.
3. Make the following setting when “1” is set for [Local Port] on the [Comm. Parameter]
dialog on the V7 series master station. Select [System Setting] → [Modular Jack].
Select [Multi-Link] for [Modular Jack 1] or [Modular Jack 2]. Connect the multi-link 2
master cable (V6-MLT) to the modular jack selected for [Multi-Link].
Communication Error
• When the master station has a communication error, the slave stations do not work and
the communication error “Time-out” is displayed. When the V7 series slave station has
a failure, a communication error occurs only on this station.
Supplemental Information: [Retrials] in the [Detail] tab window of the [Comm.
Parameter] dialog is the number of retrials that the
V7 series master station sends an inquiry to the PLC.
PLC
MONITOUCH
Send delay time “t”