Chapter 1 Functions; 1.1 Data Exchange Function; Flow Of I/O Data - Mitsubishi Electric MELSEC iQ-R Series User Manual

1
FUNCTIONS
1.1
Data Exchange Function
This function performs data exchange between the RJ71PN92 and IO devices in a specified period.

Flow of I/O data

CPU module
Device
Ø
Sequence
scan
Refresh
Device
Ó
Sequence
scan
Refresh
M0
Ò
W
• When data is output from the RJ71PN92
 The device of the CPU module turns on.
 The device status of the CPU module is stored in 'Output data area' (Un\G31000 to Un\G35095) of the RJ71PN92 by refresh.
 The status of 'Output data area' (Un\G31000 to Un\G35095) of the RJ71PN92 is sent to an IO device by the I/O data exchange.
 The status stored in the IO device is output to an external device.
• When data is input from an IO device
 The status of the external device is stored in an IO device.
 The status stored in the IO device is sent to the RJ71PN92 and stored in 'Input data area' (Un\G36000 to Un\G40095) of the RJ71PN92 by the I/O data
exchange.
 The status of 'Input data area' (Un\G36000 to Un\G40095) of the RJ71PN92 is stored in the device of the CPU module by refresh.
Set the IO device ID for each IO device on GX Configurator-PN. For I/O data exchange, specify a bit
corresponding to an IO device ID to distinguish IO device IDs when using the buffer memory areas.
For IO device IDs, refer to the following.
Page 82 [General Configuration] tab
1 FUNCTIONS
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1.1 Data Exchange Function

RJ71PN92
Buffer memory
×
Input data 1
(IO device ID: 0)
×
Input data 2
(IO device ID: 1)
×
Input data 3
(IO device ID: 2)
Data
exchange
Buffer memory
Output data 1
(IO device ID: 0)
Ô
Output data 2
(IO device ID: 1)
Ô
Output data 3
(IO device ID: 2)
Ô
IO device 1
IO device 2
(IO device ID: 0)
(IO device ID: 1)
Input data 1
(IO device ID: 0)
Input data 2
(IO device ID: 1)
Output data 1
(IO device ID: 0)
Output data 2
(IO device ID: 1)
IO device 3
(IO device ID: 2)
Ö
External device
Input data 3
(IO device ID: 2)
Õ
External device
Output data 3
(IO device ID: 2)