Cyclic Transmission Stop And Restart - Mitsubishi Electric MELSEC iQ-R Series User Manual

Cyclic transmission stop and restart

Stop or restart of cyclic transmission is enabled individually for each connection with 'Class1 cyclic pause specification'
(Un\G7735808 to Un\G7735823).
When the bit corresponding to the connection number to be stopped is turned on, cyclic transmission stops, and when that bit
is turned off, cyclic transmission restarts.
The following buffer memory areas are used to stop and restart cyclic transmission.
'EtherNet/IP
communication start
request' (Un\G7340096)
0 (stop request)
Not 0 (start request)
Even if the value of 'EtherNet/IP communication start request' (Un\G7340096) is changed from "Other than 0" to "0", 'Class1
cyclic pause specification' (Un\G7735808 to Un\G7735823) is not cleared. Therefore, even if the value of 'EtherNet/IP
communication start request' (Un\G7340096) is changed from "Other than 0" to "0" and back to "Other than 0", EtherNet/IP
communications do not start again. To start EtherNet/IP communications, clear 'Class1 cyclic pause specification'
(Un\G7735808 to Un\G7735823) and set Not 0 for 'EtherNet/IP communication start request' (Un\G7340096).
Originator
(1) Connection No.1: Communicating
(2) Connection No.2: Stopped
(3) Connection No.1: Stopped (transitioning to Stopped)
(4) Connection No.2: Stopped
(5) No.1: Stopped (remaining stopped)  EtherNet/IP communications do not start.
(6) Connection No.2: Stopped (remaining stopped)
When cyclic transmission is stopped, the operation is performed as follows.
• The originator side performs connection close processing to stop cyclic transmission. A connection timeout
does not occur on the target side.
• The target side only stops cyclic transmission. A connection timeout occurs on the originator side.
The conditions for turning on (Cyclic paused) the corresponding bit of 'Class1 cyclic pause status' (Un\G7735824 to
Un\G7735839) are as follows.
'EtherNet/IP
communication start
request'
(Un\G7340096)
0 (stop request)
Not 0 (start request)
12 FUNCTIONS
272
12.2 Cyclic Transmission Function
Corresponding bit of 'Class1
cyclic pause specification'
(Un\G7735808 to Un\G7735823)
Off: Pause not specified
Off: Pause not specified
On: Pause specified
'EtherNet/IP communication
start request' (Un\G7340096)
Value other than 0
(start request)
0 (stop request)
Value other than 0
(start request)
Specified connection Corresponding bit of 'Class1 cyclic
No. parameter pause specification' (Un\G7735808 to
Un\G7735823)

Off: Pause not specified
Does not exist On: Pause specified
Exists On: Pause specified
Cyclic transmission status
All cyclic transmissions are stopped.
Cyclic transmission starts.
Cyclic transmission pauses.
Connection No stop
No.1 instruction
Connection Stop
No.2 instruction
Connection No stop
No.1 instruction
Connection
Stop
No.2
instruction
Connection No stop
No.1 instruction
Connection Stop
No.2 instruction
Target
(1)
(2)
(3)
(4)
(5)
(6)
Corresponding bit of 'Class1 cyclic
pause status' (Un\G7735824 to
Un\G7735839)
Off: Cyclic executing
(All bits are off.)
Off: Cyclic executing
On: Cyclic paused