Mitsubishi Electric MELSEC Q Series User Manual page 89

4
FUNCTION
(b) Write request
QCPU
1)
[ SET Y0 ]
Originator
Device
2)
Figure 4.12 Tags used for Class3 Tag communication (write request)
POINT
EtherNet/IP module
(request source)
Connection
establishment
Class3 Tag (Write)
Class3/UCMM Output Area
(Un\G12288 to Un\G16383)
1) The Tag communication start request (Y00) is set to on.
A connection is established.
2) Device data are stored in the Class3/UCMM Output Area (Un\G12288 to
Un\G16383).
3) A write request is sent.
( (2) Timing of the Class3 Tag communication in this section)
Whether communication is normal or not can be checked in the following.
• The Communication Status (Class3/UCMM)(Un\G27184 to Un\G27199) is
on.
• The Communication Error (Class3/UCMM)(Un\G27200 to Un\G27215) is
off.
4) Tag data are written.
5) Data in the Class3/UCMM Input Area (Un\G4096 to Un\G8191) are stored in
the device.
When Extension Class3/UCMM Input Area is used, the steps 2) and 4) above are
performed by the auto refresh. (
EtherNet/IP module
(request target)
1)
Target
3)
Class3 Tag (Write)
Class3/UCMM Input Area
(Un\G4096 to Un\G8191)
4)
Section 7.9.7 "Refresh Parameter" window)
4.2 Tag Communication Function
4.2.2 Class3 Tag communication
QCPU
1)
[ SET Y0 ]
Device
5)
4
- 13
1
2
3
4
5
6
7
8