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parameter. The EP paramters and Loc should be set as below:
EP1=HIAL, EP2=HdAL, EP3=At, EP4=nonE, Loc=1
3.2 The Entire Parameter Table
The parameters can be divided to 8 groups including alarm, control, input, output, communication,
system, setpoint and field parameter definition. They are listed as below in sequence:
Code
Name
Description
Setting
Range
HIAL
High limit alarm
Alarm on when PV (Process Value) >HIAL; alarm off when PV<HIAL-AHYS
Alarm output action can be defined by parameter AOP.
-1999
～
+9999
units
LoAL
Low limit alarm
Alarm on when PV<LoAL; alarm off when PV>LoAL+AHYS
dHAL
Deviation high
alarm
Alarm on when PV-SV>HdAL; alarm off when PV-SV<HdAL-AHYS
dLAL
Deviation
low
alarm
Alarm on when PV-SV<LdAL; alarm off when PV-SV>LdAL+AHYS
HdAL and LdAL can also be used as high limit and low limit alarms when needed.
(Refer to the description of parameter AF)