Mitsubishi Electric Melsec Q Series User Manual page 265

7
PROGRAMMING
(4) Tracking devices for continuously using the functions in the case of
system switching
In the I/O data exchange program example, data in the following devices are tracking-
transferred.
(a) Devices whose data are tracking-transferred by I/O data exchange programs
Table7.71 Tracking Transfer Devices in the I/O Data Exchange Program Example
Device
X20 I/O data exchange start command
(b) Devices whose data are tracking-transferred by DP-Slave control programs
Table7.72 Tracking-Transfer Devices in the DP-Slave Control Program Example
Device
X30 Conditions for write to output data (1st word)
(c) Devices whose data are tracking-transferred by programs for reading diagnostic
Table7.73 Devices Tracked in the Program Example for Reading Diagnostic Information
Device
X21 Communication error detection reset command
Data in the following devices are tracking-transferred:
• Start command device by which the Data exchange start request signal (Y00)
is turned ON
• Start command device by which the Data consistency start request signal
(Y0C) is turned ON
• Devices that store output data
* 1 The devices that store output data are:
• Devices that are set as the automatic refresh target of output data in the automatic refresh setting
• Devices that are used to store data in the Output data area (Un\G14336 to Un\G18431)
• Devices whose data are specified as write data of the BBLKWR instruction
Tracking transfer is performed only for the devices that store output data. (Tracking transfer of all
areas is not needed.)
Description
Devices, which are specified as conditions for writing output data, are tracked.
Description
information
Data in the following devices are tracking-transferred:
• Start command device by which the Diagnostic information detection reset
request signal (Y01) is turned ON
• Start command device by which the Diagnostic information area clear request
signal (Y02) is turned ON
Description
7.9 Program Examples for Use in the Redundant System
7.9.1 I/O Data Exchange Program Examples
*1
Device
D100 to
Output data
D195
Device
X31 Conditions for write to output data (2nd word)
Device
X22 Communication error area clear command
Description
Description
Description
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