Mitsubishi Electric MELSEC Q Series User Manual page 84

4
FUNCTION
(4) Reserved tag
(5) Precautions
4
- 8 4.2 Tag Communication Function
4.2.1 Class1 Tag communication
Tags can be reserved.
A tag set as a reserved tag is not used to perform Tag communication. It is used only
to reserve input area and output area.
(a) Application
Adding a tag (canceling the reserved tag setting) does not require a sequence
program change since input area and output area remain unchanged.
A sequence program change is not necessary by setting (not deleting) the tag as
a reserved tag when a tag is no longer used.
(b) Setting method
Select "Reserved Tag" in the "Producer Tag" or "Consumer Tag" window of Utility
Package. ( (3) Parameter setting and program example in this section)
(c) Checking reserved tag settings in the buffer memory
The reserved tag setting status can be checked in Reserved
tag(Class1)(Un\G27168 to Un\G27183)
(a) When the target device does not support the INT data type
Adjust the setting as shown below so that the number of bytes is matched with
that of the target device.
Example: When DINT is set for Data Type of the corresponding device.
Table 4.4 When DINT is set for Data Type of the corresponding device.
Setting
Target device
EtherNet/IP module
(b) When multiple Consumers (Consumer Tags) establish connections to one
Producer (Producer Tag)
1) RPI value
Set the same RPI value to all of the Consumer Tags.
Producer Tag
Figure 4.7 RPI for multiple connections
Data type Data size
DINT 5
INT 10
Define and register
in the "User Define" 10
window
Consumer Tag (RPI = 100ms)
Consumer Tag (RPI = 100ms)
Consumer Tag (RPI = 100ms)
Byte
20 bytes
20 bytes
20 bytes