Details Of I/O Signals - Mitsubishi Electric Melsec Q Series User Manual

3
SPECIFICATIONS

3.3.2 Details of I/O signals

(1) Data exchange start request signal (Y00), data exchange start completed
signal (X00)
(a) Turn ON the Data exchange start request signal (Y00) to start I/O data exchange.
(b) When I/O data exchange is started after turning ON the Data exchange start
Data exchange start
completed signal (X00)
Figure 3.1 Data Exchange Start Request Signal (Y00), Data Exchange Start Completed Signal (X00)
(c) Use these signals as interlock signals when reading/writing I/O data.
(d) Write the initial values of the output data to the buffer memory before turning ON
(e) Turning OFF the Data exchange start request signal (Y00) clears the information
request signal (Y00), the Data exchange start completed signal (X00) turns ON.
The Data exchange start completed signal (X00) turns OFF in any of the following
cases:
• When the Data exchange start request signal (Y00) is turned OFF
• When an error causing stop of I/O data exchange occurs
• When parameters are currently being written to the QJ71PB92V from GX
Configurator-DP
• When the operation mode of the QJ71PB92V has been changed
• When a communication error has occurred on a DP-Slave. (Only when the
master parameter, "Error action flag" is checked)
Data exchange start request
Data exchange start
request signal (Y00)
I/O data exchange
stopped
the Data exchange start request signal (Y00).
in the following areas.
The information in the other buffer memory areas is held.
• Slave status area (Normal communication detection) (Un\G23040 to
Un\G23047)
• Slave status area (Diagnostic information detection) (Un\G23056 to
Un\G23064)
3.3 Input/Output Signals to/from Programmable Controller CPU
3.3.2 Details of I/O signals
Data exchange start
completed
Exchanging I/O data I/O data exchange
stopped
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