Omron SYSMAC C Series Operation Manual page 169

Data Exchange with CPU Unit
158
If the program writes conversion data after parameters, design the program as
follows: Even if an attempt is made to write conversion data immediately after
parameters, such as scaling upper and lower limits, upper and lower limits, and
binary/BCD mode settings, are written, the data may not be correctly written due
to the internal processing of the Analog Output Unit. For this reason, design the
program so that it writes conversion data at least 100 ms after parameters have
been written. Also, the Parameter Update Bit must be turned ON to make the
written parameters valid.
Input
condition A
Y
1
Word n+1,
Y
bit 2
1
B
(= Flag)
Input
condition
(= Flag)
Section
Y
1
Writes
parameters
100-ms timer (delay timer
for internal processing time
of Analog Output Unit)
Self-holding
bit
Turns ON 100 ms after parameter
is written (A turns ON)
Writes
conversion
data
9-3