Mitsubishi Electric Melsec Q Series User Manual page 266

7
PROGRAMMING
(5) Program examples
Program for DP-Slave control (
Program for reading diagnostic information (
7
- 77 7.9 Program Examples for Use in the Redundant System
7.9.1 I/O Data Exchange Program Examples
(a) When using automatic refresh
This section explains a program for the case where the QJ71PB92V
communicates with DP-Slaves using automatic refresh.
1) Setting automatic refresh parameters
The setting is the same as in Section 7.1.1 (1).
2) I/O data exchange program example (Automatic refresh)
Figure 7.35 I/O Data Exchange Program Example (Automatic Refresh)
Not needed when the initial setting is not changed.
Section 7.1.1 (2)(a)
)
Section 7.1.1 (2)(b)
Turn ON the initial
setting execution command
Initializes Diagnostic info.
invalid setting area
Initializes Diagnostic info. non-
notification time setting area.
Sets conditions for system
switching.
Sets a system switching
DP-Slave (1st)
Specifies the 2nd temporary
slave reservation
Turn OFF the initial
setting execution command
Initializes Diagnostic info.
invalid setting area
Sets 0 in Diagnostic info. non-
notification time setting area
Sets conditions for system
switching.
Sets a system switching
DP-Slave (1st)
Specifies the 2nd temporary
slave reservation
Turn OFF Y00 to Y1F
Writes the initial
output data value.
I/O data exchange
start processing
)