Creating Programs
4.3.4 Status Information (12-bit mode)
With the analog output unit, the following information can be monitored in the external input
area WX.
Status information
X20 Analog output unit power
0: OFF, 1:ON、
X21-X23 Used in the system
X24 CH0 data writing status
0:Normal, 1:Error (Note 1)
An error occurs when data written to the memory area (WY2/WY3) is
out of each range, and the data conversion is not performed. The
error is cleared when data within the range is written and the
conversion is performed.
X25 CH1 data writing status
X26 CH2 data writing status
X27 CH3 data writing status
X28-X2F Used in the system
(Note 1): Output data and output CH switch flag are allocated to the same I/O number. Data error can be detected
successfully with the flags when the digital input value is within the range of K-4096 to K4095.
Even when the digital input value is out of the range, however, data conversion may be mistakenly conducted.
To prevent this problem, be sure to set up the program to check the upper and lower limits of the digital value.