Instruction Manual
3-9
- IV Series User’s Manual (Field Network) -
Cyclic communication setting method
3
Modify the settings as necessary.
Name (Device name)
You can assign a desired name. The following
tags will be generated based on the entered
names and used for the data sent and received
in the cyclic communication.
(Device name): I
..... Information received from
the IV series
(Device name): O
... Information to be sent to
the IV series
(Device name): C
... Not used.
Comm Format
You can enter a desired format. Due to the
structure of the assembly object, programming
will be easier with a format that supports a
2-byte alignment.
IP Address
You can enter the IP address of the IV series.
Input (Assembly Instance)
Enter “100”.
Input (Size)
You can enter the Input Assembly size of the IV
series.
Output (Assembly Instance)
Enter “101”.
Output (Size)
You can enter the Output Assembly size for the
IV series.
Conguration (Assembly Instance)
Enter “1”.
Conguration Size
Enter “0”.
Setting the Comm Format option to [Input
Data] will enable you to establish cyclic
communication with multiple PLCs using the
“Input only” connection.
To set the Comm Format to [Input Data],
perform the following settings on each PLC.
Item Setting contents
Comm Format Input Data-INT
Input
(Assembly Instance)
100
Input (Size)
Input Assembly size
of the IV series
Output
(Assembly Instance)
254
Output (Size)
Output Assembly size
for the IV series
If communications with multiple PLCs
will be established using the “Input Only”
connection, set the connection type to
“Multicast”.
For details of the Input Assembly and Output
Assembly sizes for the IV Series, refer to
“EtherNet/IP communication specications in
the IV series” (Page 2-3) .
4
Set the RPI (communication cycle) for the
cyclic communication.
Make sure to set a value longer than or equal to 5 ms.
5
Download the settings to the PLC.
The EtherNet/IP communication will be enabled
when you switch to online after downloading the
settings.
3
Cyclic communication