Command Junction - Honeywell TC4S User Manual

Isolated thermocouple input module
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ATTENTION
The area is cleared if a channel stops (output 0 if stoppage).

Command junction

%UXa.b464~467
%UXa.b468~471
%UXa.b472~475
R200
Isolated Thermocouple Input Module TC4S User's Guide
September 2010
5.2. I/O area of TC module conversion data
_ab_CH0_FINDEN
It outputs maximum/minimum values of
temperature entered while the
_ab_CH1_FINDEN
instruction junction is being set as 1.
Until the bit of the area is set as 0, it
_ab_CH2_FINDEN
maintains the maximum/minimum
value. But, the function does not work if
_ab_CH3_FINDEN
the channel stops although the area is
allowed.
_ab_CH0_ALMEN
If the junction bit to select alarm
function provided by module (Process
_ab_CH1_ALMEN
alarm/Rate Change alarm), Enable or
Disable is set as 1, the alarm function is
_ab_CH2_ALMEN
allowed and it may output the alarm if it
is within alarm condition depending on
_ab_CH3_ALMEN
the settings. But, the function does not
work if the channel stops although the
area is allowed.
_ab_CH0_RJCDS
Command junction prohibiting or
allowing cold junction compensation
_ab_CH1_RJCDS
(RJC) of a channel. If the bit is set as 1,
it does not support RJC. In general, the
_ab_CH2_RJCDS
area is set as 0 (allowed). But, in case
of Type B sensor, it does not support
_ab_CH3_RJCDS
RJC regardless of the area instruction.
Honeywell
5. Internal Memory
73

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