Flow Of Operation - Mitsubishi Electric MELSEC iQ-R Series User Manual

Flow of operation

This section describes the flow of operation of the I/O communication with each slave node.
Starting the I/O communication with 'I/O communication request' (Y11)
'Module READY' (X0F)
'Auto configuration request' (Y15)
'Request for saving/clearing
parameters to Flash ROM' (Y17)
'I/O communication request' (Y11)
'I/O communicating' (X01)
'Master function error set signal'
(X03)
'Master function error information'
(Un\G433)
'Master function parameters'
(Un\G468 to Un\G975)
'Data consistency dedicated
instruction setting' for master
function (Un\G1587, bit 0)
'Master function receive data'
(Un\G1792 to Un\G2047)
'Master function transmit data'
(Un\G2304 to Un\G2559)
(1) MOV/TO instruction
(2) Parameter check
(3) MOV/FROM instruction
(4) MOV/FROM instruction, DNTMRD, or M+RJ71DN91_MasterRead
(5) MOV/TO instruction, DNTMWR, or M+RJ71DN91_MasterWrite
 Set the following items.
• Set the parameter in 'Master function parameters' (Un\G468 to Un\G975).
• Set whether to enable or disable the data consistency dedicated instruction with 'Data consistency dedicated instruction setting' (Un\G1587.0) for the master
function.
 Set the default value of ON/OFF information to each slave node in 'Master function transmit data' (Un\G2304 to Un\G2559).
 Turn off 'Auto configuration request' (Y15) and 'Request for saving/clearing parameters to Flash ROM' (Y17).
 When 'I/O communication request' (Y11) is turned on, the parameter is checked.
 When the parameter check normally completes, the I/O communication with each slave node starts and 'I/O communicating' (X01) turns on.
• The input status from each slave node is stored in 'Master function receive data (Un\G1792 to Un\G2047).
• Set the ON/OFF information to each slave node in 'Master function transmit data' (Un\G2304 to Un\G2559).
 When the parameter check abnormally completes, an error occurs and 'Master function error set signal' (X03) turns on. 'I/O communicating' (X01) does not
turn on at this time. Check the error code with the module diagnostics, 'Master function error information' (Un\G433), or 'Master function communication error
information' (Un\G1152), and correct the error.
 When 'I/O communication request' (Y11) is turned off, the I/O communication with each slave node stops and 'I/O communicating' (X01) turns off.
ON
OFF
OFF Ô
OFF Ô
OFF
OFF
OFF
Ò
(1)
Ò
(1)
Ó
(1)
Õ
ON
Ö
ON
×
ON
(3)
(2)
1.1 Master Function (I/O Communication)
Ø
OFF
OFF
(4)
(5)
1 FUNCTIONS
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