Mitsubishi Electric MELSEC iQ-R Series User Manual page 34

Starting the I/O communication automatically at power-on
For auto communications, set 'Auto communication start setting' (Un\G1585) to "Start".
'Module READY' (X0F)
'I/O communication request' (Y11)
'I/O communicating' (X01)
'Slave function error set signal'
(X08)
'Slave function error information'
(Un\G1537)
'Slave function receive size setting'
(Un\G1550),
'Slave function transmit size setting'
(Un\G1551)
'Slave function receive data'
(Un\G2816 to Un\G2879)
'Slave function transmit data'
(Un\G3072 to Un\G3135)
(1) Parameter check
(2) MOV/FROM instruction
(3) MOV/TO instruction
 Set the following parameters in advance.
• Set the parameter in 'Slave function receive size setting' (Un\G1550) and 'Slave function transmit size setting' (Un\G1551).
• 'Auto communication start setting' (Un\G1585)
 When the power is turned on, 'Module READY' (X0F) turns on and the parameter is checked.
 When the parameter check normally completes, the I/O communication with the master node starts and 'I/O communicating' (X01) turns on. However, the
node is at connection establishment waiting status until the I/O communication request is transmitted from the master function.
• The transmit data from the master node is stored in 'Slave function receive data' (Un\G2816 to Un\G2879).
• Set the ON/OFF information that is to be transmitted to the master node to 'Slave function transmit data' (Un\G3072 to Un\G3135).
 When the parameter check abnormally completes, an error occurs and 'Slave function error set signal' (X08) turns on. 'I/O communicating' (X01) does not
turn on at this time. Check the error code with the module diagnostics, 'Slave function error information' (Un\G1537), or 'Slave function communication error
information' (Un\G1153), and correct the error.
 When 'I/O communication signal request' (Y11) turns on and off, the I/O communication with the master node stops and 'I/O communicating' (X01) turns off.
1 FUNCTIONS
32
1.3 Slave Function (I/O Communication)
Ó
ON
OFF
OFF
OFF OFF
OFF
Ò
Ô
ON
Õ
ON
(2)
(1)
(2)
(3)
Ö
ON
OFF
OFF