Sutron Corporation X-Link Operations & Maintenance Manual, Rev 1.63 5/24/2016 pg. 121
Command line
access to output 1:
OUTPUT1 tells whether the output is currently on. X-Link's possible replies:
o
Output1 is NOT active
o
Output1 is ACTIVE
OUTPUT1 ON turns on the output
OUTPUT1 OFF turns off the output
If the digital output is turned off via command line while the system is in alarm,
the system will not turn it back on until it goes out of alarm and later back into
alarm.
A measurement setup for a
ROC Alarm
and an
Alarm ROC Interval
set to
Since
Last Tx
does not have a going out of alarm state. Those alarms will never turn
off the digital output.
11.1.
Output Hardware
The digital output is an open collector type output. This provides direct interface
to many products. The open collector output may easily sink 100ma (rated at
>400ma) on a continuous basis.
It is expected that a pull-up resistor will be connected to the SDI-12 12V supply
or alternately to the battery input. The value of the pull-up may be determined
by the impedance of the connected load. A10 kOhm resistor may be used as a
default.
