the alarm whilst still in alarm condition allowing the alarm to reset automatically when the reading moves outside
the alarm condition.
5.33
Alarm relay Boolean logic operation
Section:
RL 1
to
RL 8
Display:
booI
Range:
Or
,
And
Default Value:
Or
Default Access Level
4
Function number
4310
to
4317
This function allows a Boolean logic AND (
And
) or OR (
Or
) function to be applied to alarms. If two or more
alarms use the same relay and that relay is set to operate as an OR operation then this effectively puts the alarms
in parallel. If two or more alarms use the same relay that relay is set to operate on an AND operation then this
effectively puts the alarms in series.
Examples: 1. If alarms 1, 2 and 3 all use relay 1 and relay 1 is set for
Or
operation then relay 1 will activate if the
display value for the selected channels for these alarms causes either alarm 1 or alarm 2 or alarm 3 to go into alarm
condition. i.e. relay 1 will activate if any of the alarms is in alarm condition.
2. If alarms 1, 2 and 3 all use relay 1 and relay 1 is set for
And
operation then relay 1 will activate if the display
value for the selected channels for these alarms causes alarm 1 and alarm 2 and alarm 3 to go into alarm condition.
i.e. all 3 alarms must be in alarm condition for relay 1 to activate.
5.34
Serial input operation mode
Section:
CONF
Display:
CodE
Range:
diSP
,
ASCI
,
UAL
,
M.buS
,
SCAN
,
NMEA
,
i131
Default Value:
ASCI
Default Access Level
CAL
Function number
4d00
Allows selection of the operating mode to be used for serial communications.
diSP
mode
With
diSP
selected (image mode) the display expects to see an input in raw display data format from another
instrument. This mode is generally only used when the display is connected to an instrument from the same manu-
facturer. This mode is not used with any other source.
The data format expected is:
<
ESC
>
Incccc
Where:
<
ESC
>
is 27 Dec or 1B Hex
I is the ASCII character “I”
n is the number of image characters to follow
cccc are the image characters in Hex. format
ASCI
mode
ASCI
selects ASCII type input data, the input data will then be displayed without modification (see also
ALPH
function as this can also affect what is displayed). Displays of characters in
ALPH
mode are left justified. Any
leading zeroes received will be visible in this mode e.g. data received such as 00873 will be displayed as 00873.
UAL
mode
With
UAL
selected (numeric or value mode) the incoming characters will not be displayed unless they are numeric
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