Communication Status (Class1) - Mitsubishi Electric MELSEC Q Series User Manual

3
SPECIFICATIONS
3.3.14

Communication status (Class1)

The communication status, error status, and reserved tag setting of Class1 Tag
communication are stored in this area.
For details of the timing chart, refer to the following.
Section 3.2.2 (2) Timing chart
(1) Communication status (Class1)(Un\G27136 to Un\G27151)
The Class1 Tag communication status is stored for each tag No.
After recovering from a communication error, the status is automatically changed to
on (1: Normal communication).
For details of area assignment, refer to the following.
POINT
EtherNet/IP module
Producer Tag
Figure 3.23 Example that the status is set to on (1: Normal communication)
(2) Communication error (Class1)(Un\G27152 to Un\G27167)
The error status of Class1 Tag communication is stored for each tag No.
If recovered from a communication or response error, the status is automatically
changed to on (0: Normal communication, No setting for Tag).
For details of area assignment, refer to the following.
• 0: Not communication, Communication error, Reserved tag, No setting for tag
• 1: Normal communication
(3) Reserved tag (Class1)(Un\G27168 to Un\G27183) in this section
When one Producer Tag is connected to multiple Consumer Tags in multicast
communication, even one normal communication will set this status area to on (1:
Normal communication).
Example: In the following example, the Communication status
(Class1)(Un\G27136 to Un\G27151) is set to on (1: Normal communication).
Target device 1
Consumer Tag
Target device 2
Consumer Tag
Target device 3
Consumer Tag
When no communications or communication errors occur in all connections to
Consumer Tags, this status area is set to off (0: Not communicating,
Communication error, Reserved tag, No setting for tag).
• 0: Normal communication, No setting for Tag
• 1: Communication error, Response error
* 1 For Producer Tag, this status area is set to on (1: Communication error, Response error) only
when all the communications with connected Consumer Tags are stopped.
(3) Reserved tag (Class1)(Un\G27168 to Un\G27183) in this section
: Normal communication
: No communication, Communication Error
*1
3.3 Buffer Memory
3.3.14 Communication status (Class1)
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