Instructions

UM-0085-B09 DT80 Range User Manual Page 93
RG
Polling Alarm Inputs
The current values of the channels being tested in alarm conditions can be polled (requested) by the host computer at
any time. There are three commands for polling alarm data:
Command
Function
?n
returns the current input value of alarm n (if n = 0 then all un-numbered alarms are returned)
?x
returns the current input values of all alarms in schedule x, where x = A, B,…K, X
?ALL
returns the current input values of all alarms in all schedules
The output of each of these commands consists of:
• the alarm number (An). When un-numbered alarms are polled, the alarm number is returned as A0
• the schedule to which the alarm belongs
• the alarm condition (so that un-numbered alarms can be distinguished). For an alarm with no condition (i.e.
DO),
the word
DO is shown
• the current value of the channel being tested in the alarm condition
For example
BEGIN
RA2S
ALARM4(2R>50)"High R"
ALARM(1CV<>-10,10){2CV=2CV+1}
IF(2CV>4){1V(=9CV)}
ALARM5(9CV<100){RA100T}
END
?ALL
A4 A 4R>50 1300.6
A0 A 1CV<>-10,10 99.0
A0 A 2CV>4 102.0
A5 A 9CV<100 0.0
If the DT80 is set to formatted mode (
/H) then formatted mode records containing the same information are returned.
The dEX web interface will also indicate the status and value of alarm channels.