8.6 Alarms
The two independent alarms options (1 and 2) allow the user to setup
configurable alarm events by setting the trip points, direction of trigger, relay
enable energized-on-event command, latching on-event command and hysteresis.
While
AL1
or
AL2
are displayed press the key to enter the sub menu. The
unit displays
SEtPt
. Use the key to select the required function and then
press the key.
Note: Pressing the key reverts back to the display
AL1
or
AL2
message screen.
The following functions can be performed:-
SEtPt
Enter the alarm set point.
tyPE
Select if the alarm is to activate on a rising signal
Hi
,
falling signal
Lo
or
OFF
.
rELAy
Select if the relays are Energized
En
or de-energized
dE-En
LAtch
Set if the alarm is Latch
yES
or not latching
no.
HySt
Enter the hysteresis value.
Note: Pressing the key sets any of the alarm parameter will not revert to the
previous value even if the 10 second time-out occurs or the key is pressed.
8.7 Digital Communication
The
rS485
sub menu allows the user to set the address and baud rate used in
communicating with a PC using RS485 communications. See Appendix E.
A RS485 interface and cable are required.
All transmission are binary NOT ASCII characters.
A single instrument may be connected using the universal address of 0.
Up to 32 instruments may be connected using addresses 1 to 32
Note:
Do not use the universal address 0 when 2 or more AcuTrak are connected
together. The instrument is the slave and must be poled for data.
There is only one command that returns the process value in the units set in the
secondary display.
While
rS485
is displayed press the key to enter the sub menu and
Addr
is
displayed. Use the key to select either
Addr
or
bAUd
then press the key.
ESC
ESC
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