76
Note: 1) If RO is under alarming mode, it can only work in “latch” mode.
2) If the number is 51~79, there are special guide for contrast method and
meaning of parameters, please refer to Chapter 6.
After setting up the alarming parameters, user must also setup the global
settings in order for the alarm to work properly.
2. Global settings
Register addresses for global alarm settings are from 1046H~104DH. Please
refer to section 5.3, page 95 "Global alarming settings" for more details.
“Global alarming enable” determines whether the alarming function of the
meter is activated or not. The alarming function is enabled when it is set as "1".
When “Alarming flash enable“ is set as “1”, backlight will flash when alarm is
triggered.
“Alarming channel enable setting” determines whether the corresponding
alarm group is enabled or not. There are 16 groups in all and each one is
corresponding to one bit of a 16-bit register. The corresponding bit must be set
to "1" in order to activate the alarm channel.
Logic "AND" between alarm setting: The 16 alarming records in the meter are
divided into 8 pairs. Each pair has two alarm groups. The two groups can be
logically “AND” by controlling the logic check box. When two groups are “AND”,
alarming triggers only if both AND conditions are met. If the "AND" logic box is
unchecked, the two alarm channels will work independently.
The 8 "AND" logic pairs are arranged as follows: 1
st
, 2
nd
channel form Pair 1; 3
rd
,
4
th
channel form Pair 2; 5
th
, 6
th
channel form Pair 3; 7
th
, 8
th
channel form Pair 4;
9
rd
, 10
th
channel form Pair 5; 11
th
, 12
th
channel form Pair 6; 13
th
, 14
th
channel form
Pair 7; 15
th
, 16
th
channel form Pair 8.
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