Coffeemaker User Manual

56
Analog I/O Modules (AD268 / DA264 / TC218)
7. Troubleshooting
PART 2 DA264
7. Troubleshooting
7.1 RAS information
The RUN LED is provided on the front of the DA264. When the DA264 is operating normally,
this LED is lit.
Also the module status information is provided in the DA264‘s buffer memory (addresses
H800C to H800F). This information is useful for troubleshooting.
Refer to section 6 for the module status information and how to read it.
7.2 Troubleshooting
The table below shows the trouble and its remedy.
Trouble Module
status info
LED Module operation Cause Remedy
Output type
setting error
Bit 8 is ON ON
(if the error
occurs in all
channels, it
is OFF)
The D/A conversion
continues based on
the previous setting.
Invalid output type
parameter was set.
Set the correct
output type
parameter.
D/A
conversion
data limit over
Bit D is ON ON The D/A conversion
data of the channel
is limited by the limit
value.
The written D/A
conversion data is
out of the range.
Check the output
rage and write
the correct data.
External 24V
error
Bit E is ON OFF The D/A conversion
is stopped. Output
signal is 0V/0mA.
Internal ±15V
voltage is not
normal.
Check the
external 24Vdc
power supply.
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