Mitsubishi Electric MELSEC Q Series User Manual page 23

1
OVERVIEW
(c) Communications using read/write requests (Class3 Tag communication)
Class3 Tag
Tag name Class3_Data1
(d) Asynchronous communication without establishing a connection (UCMM Tag
UCMM Tag
Tag name UCMM_Data1
Communication can be performed by sending a read or write request.
( Section 4.2.2 Class3 Tag communication)
Connection
establishment
Read request
Class3 Tag
Read response
(Tag data read)
Tag name must be matched.
Figure 1.3 Class3 Tag communication
communication)
Communication using a read or write request is available without establishing a
connection prior to communication.
Read request
UCMM Tag
Read response
(Tag data read)
Tag name must be matched.
Figure 1.4 UCMM Tag communication
Class3 Tag
Class3 Tag
Tag name
UCMM Tag
UCMM Tag
Tag name
1.1 Features
1
2
Class3_Data1
3
4
5
UCMM_Data1
6
7
8
1
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