Mitsubishi Electric MELSEC iQ-R Series User Manual page 287

■Timing chart
The following figures show operations from the time 'Class3/UCMM communication execution request' (Un\G7749632 to
Un\G7749647) turns on until it turns off depending on the setting details of 'Trigger specification' (Un\G7751690).
• When the trigger specification is Application Trigger
A message is sent only once for one request.
Performed by the RJ71GN11-EIP
Performed by a program
'Class3/UCMM communication
execution request'
(Un\G7749632 to Un\G7749647)
'Class3/UCMM communication
execution request acceptance'
(Un\G7749648 to Un\G7749663)
'Class3/UCMM communication
execution request completion'
(Un\G7749664 to Un\G7749679)
Data send/receive processing
'Class3/UCMM communication area'
(Un\G7751680 to Un\G8275967)
(1) Communication execution
(2) Request area
(3) Response area
(4) No data sending from this point onward
• When the trigger specification is Cyclic
A message is sent periodically at the interval set for 'RPI' (Un\G7751688), and every time a message is received, the result is
stored in the response area. (Every time the result is stored, the value of 'Execution completion count' (Un\G7752868 to
Un\G7752869) is increased.)
Performed by the RJ71GN11-EIP
Performed by a program
'Class3/UCMM communication
execution request'
(Un\G7749632 to Un\G7749647)
'Class3/UCMM communication
execution request acceptance'
(Un\G7749648 to Un\G7749663)
'Class3/UCMM communication
execution request completion'
(Un\G7749664 to Un\G7749679)
Data send/receive processing
'Class3/UCMM communication area'
(Un\G7751680 to Un\G8275967)
(1) Communication execution (Cyclic 1st time)
(2) Communication execution (Cyclic 2nd time)
(3) Communication execution (Cyclic Nth time)
(4) Request area
(5) Response area (Cyclic 1st time)
(6) Response area (Cyclic 2nd time)
(7) Response area (Cyclic Nth time)
(1)
(2)
(1) RPI
(2)
(4) (5)
(4)
(3)
(3)
(6) (7)
12 FUNCTIONS
12.3 Message Communication Function (Client)
12
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