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CHAPTER 8 FUNCTION
8
8.12 Trigger Output Function
(6) CH Output enable/disable flag
The following describes Trigger output request (RY19) and CH Output enable/disable flag (RY10 to RY13).
• When Trigger output request (RY19) is turned on while CH1 Output enable/disable flag (RY10) is set to
disabled, the D/A conversion is performed, but the analog output value does not change from the offset
value.
• Even when CH1 Output enable/disable flag (RY10) is set to enabled, the analog output value does not
change from the offset value until the D/A conversion is performed by another Trigger output request (RY19).
(7) Analog output HOLD/CLEAR function
The following describes Trigger output request (RY19) and analog output HOLD/CLEAR function.
• Even if Trigger output request (RY19) is turned on while the analog output HOLD/CLEAR function is being
executed, the D/A conversion is not performed. This is the same for the trigger output request assigned to
the extension digital input module as an external signal.
• Even when the operating status of the CPU module is back to RUN, the analog output value is not updated
until the D/A conversion is performed by another Trigger output request (RY19).
ON ON ON
ON
ON ON
ON ON
Controlled by the D/A converter module
Controlled by the program
Trigger output request
(RY19)
CH1 Analog output value
D/A conversion process
CH1 Output enable/disable flag
(RY10)
Trigger output completed clear
request (RY1A)
Trigger output completed flag
(RX19)
Waiting for
trigger input
Waiting for
trigger input
First D/A
conversion
Third D/A
conversion
D/A conversion
value (first time)
D/A conversion value
(third time)
Second D/A
conversion
Offset valueOffset value
Waiting for
trigger input
Waiting for
trigger input
Even if output is enabled, the analog
output value is not updated until the
next D/A conversion.
While output is disabled, D/A conversion
results in the offset value output.
ON ON
ON
RUN RUN
ON
Controlled by the D/A converter module
Controlled by the program
Trigger output request
(RY19) after external signal
assignment
CH2 Analog output value
(HOLD setting)
D/A conversion process
Operating status of the CPU
module
Trigger output completed
clear request (RY1A)
Trigger output completed
flag (RX19)
Waiting for
trigger input
Waiting for
trigger input
Waiting
for trigger
input
Waiting for
trigger input
First D/A
conversion
Second D/A
conversion
D/A conversion
value (first time)
D/A conversion value
(second time)
D/A conversion
value (first time)
D/A conversion value
(first time)
CH1 Analog output value
(CLEAR setting)
D/A conversion
value (first time)
D/A conversion value
(second time)
Offset valueOffset value
Executing the analog output
HOLD/CLEAR function
Even if the CPU module is switched to the
RUN state, the analog output value is not
updated until the next D/A conversion.
A trigger output request is rejected during
execution of the HOLD/CLEAR function.