Mitsubishi Electric MELSEC Q Series User Manual page 94

4
FUNCTION
(1) Tags used for the UCMM Tag communication
UCMM Tag
QCPU
1)
[ SET Y0 ]
Device
5)
4
- 18 4.2 Tag Communication Function
4.2.3 UCMM Tag communication
The following tags are used for UCMM Tag communication.
Tag
Originator
Target
(a) Read request
EtherNet/IP module
(request source)
Originator
UCMM Tag (Read)
Class3/UCMM Input Area
(Un\G4096 to Un\G8191)
Figure 4.17 Tags used for UCMM Tag communication (read request)
1) The Tag communication start request (Y00) is set to on.
2) Device data are stored in the Class3/UCMM Output Area (Un\G12288 to
Un\G16383).
3) The Application Trigger request (Class3/UCMM)(Un\G27072 to Un\G27087) is
turned on to send a read request.
( (2) Timing of the UCMM Tag communication in this section)
Whether communication is normal or not can be checked in the following.
• Application Trigger completion (Class3/UCMM)(Un\G27104 to
Un\G27119) is on.
• The Communication Error (Class3/UCMM)(Un\G27200 to Un\G27215) is
off.
4) Tag data are read out.
5) Data in the Class3/UCMM Input Area (Un\G4096 to Un\G8191) are stored in
the device.
POINT
When Extension Class3/UCMM Output Area is used, the steps 2) and 4) above
are performed by the auto refresh. (
window)
Table 4.6 Tag type
Sends a read request to a tag of the target device.
Read
(Reads the data from the Tag of the corresponding device.)
Sends a write request to a tag of the target device.
Write
(Writes data to a tag of the target device.)
Read Accepts a read request from the target device.
Write Accepts a write request from the target device.
EtherNet/IP module
(request target)
Target
3)
UCMM Tag (Read)
Class3/UCMM Output Area
(Un\G12288 to Un\G16383)
4)
Section 7.9.7 "Refresh Parameter"
Description
QCPU
1)
[ SET Y0 ]
Device
2)