Omega Engineering CN 79000 Thermostat User Manual


 
Page 24 of 40
InC2InC2
InC2InC2
InC2 Input Correction: Select
-500-500
-500-500
-500 to 500 °F, °C, or counts. This
feature allows the input value to be changed to agree with
an external reference or to compensate for sensor error.
Note: InC2 is reset to zero when the input type is changed,
or when decimal position is changed.
Fil2Fil2
Fil2Fil2
Fil2 Digital Filter: Select
OFFOFF
OFFOFF
OFF,
11
11
1 to
9999
9999
99. In some cases the time
constant of the sensor, or noise could cause the display to
jump enough to be unreadable. A setting of 2 is usually
sufficient to provide enough filtering for most cases, (2
represents approximately a 1 second time constant). When
the 0.1 degree resolution is selected this should be in-
creased to 4. If this value is set too high, controllability will
suffer.
LPb2LPb2
LPb2LPb2
LPb2 Loop Break Protection: Select
OFFOFF
OFFOFF
OFF,
11
11
1 to
99999999
99999999
9999 seconds. If,
during operation, the output is minimum (0%) or maximum
(100%), and the input moves less than 5°F (3°C) or 5 counts
over the time set for Lpb2, the
LOOP bAdLOOP bAd
LOOP bAdLOOP bAd
LOOP bAd message will
appear. The loop break error can be reset by pressing the
ENTER key when at the LPb2 menu item. The INDEX &
ENTER keys may also be used.
The following Menu Items operate on the entire instrument.
There is no Zone or Set Point distinction. They will appear in
the
Edit1Edit1
Edit1Edit1
Edit1,
Edit2Edit2
Edit2Edit2
Edit2, and
Edit3Edit3
Edit3Edit3
Edit3 menus.
LOrELOrE
LOrELOrE
LOrE
(Option C4, Serial Communications) Local / Remote Sta-
tus: Select
LOCLOC
LOCLOC
LOC
or
rErE
rErE
rE
.
LOCLOC
LOCLOC
LOC
The host computer is advised not to send remote
commands. Any write commands sent to the
controls will be rejected.
rErE
rErE
rE
The host computer is allowed to send write
commands.If the control is not addressed within
the time set in the
nAtnAt
nAtnAt
nAt
(No Activity Timer, see
Secure Menu) the
CHEC LorECHEC LorE
CHEC LorECHEC LorE
CHEC LorE
error message will
be displayed.
AddrAddr
AddrAddr
Addr
(Option C4, Serial Communications) Control Address:
Read value from
11
11
1
to
3FF3FF
3FF3FF
3FF
. This number (hexadecimal, base
16) must match the address number used by the host
computer. Viewed only in this menu. The value displayed
is for Zone 1. The address for Zone 2 is the value for Zone
1 plus one (e.g. if
AddrAddr
AddrAddr
Addr
is set to
1717
1717
17
, Zone 1 is assigned to