Mitsubishi Electric Melsec Q Series User Manual page 264

7
PROGRAMMING
(3) Device assignments in program example
Device
X00 Data exchange start completed signal
X01 Diagnostic information detection signal
X02 Diagnostic information area cleared signal
X0C Data consistency requesting signal
X1B Communication READY signal
X1D Module READY signal
X1F Watchdog timer error signal
Device
X20 I/O data exchange start command
X21 Communication error detection reset command
X22 Communication error area clear command
X30 Conditions for write to output data (1st word)
X31 Conditions for write to output data (2nd word)
Table7.70 List of Devices Used as Automatic Refresh or Buffer Memory Read Target
Device
D0 to D95 Input data
D100 to
Output data
D195
D200 to
Slave status area (Normal communication detection) D1000
D207
7
- 75 7.9 Program Examples for Use in the Redundant System
7.9.1 I/O Data Exchange Program Examples
The program examples in this section use the following device assignments.
(a) Devices used by the QJ71PB92V
Table7.68 List of Devices for the QJ71PB92V
Description
(b) Devices used by the user
Table7.69 List of User Devices
Description
(c) Devices used as automatic refresh or buffer memory read target
Description
Device
Y00 Data exchange start request signal
Y01 Diagnostic information detection reset request signal
Y02 Diagnostic information area clear request signal
Y0C Data consistency start request signal
Device
SM402 ON for 1 scan only after RUN
ON for 1 scan only after switching system from
SM1518
standby to control
M0 Refresh start request
M400 Initial setting execution command
Device
D208 to
Slave status area (Reserved station setting status)
D215
D216 to
Slave status area (Diagnostic information detection)
D224
Diagnostic information read target
Description
Description
Description