42 C4 Manual Rev 7.5.2
probe mode, n can be 1 or 2 as the temperature display toggles between probe 1
and probe 2 with each press of the Display Temperature <DISP/TEMP> key. If
Intelligent 2 Probe Control is implemented (probe number set to 0), the display
will rotate from probe 1 to probe 2 to probe 0 (average), then back to probe 1, etc.
with each press of <DISP/TEMP>. The temperature is displayed to the nearest
tenth of a degree C. although internal temperature values are kept at a much
higher precision. The value is rounded so that a display of 30.2 means a
temperature between 30.15 and 30.24. Fahrenheit values display an F after the
probe number.
5.2 Displaying and Changing the Setpoint
The setpoint may be displayed by pressing the Display Control key <DISP/CNTL>.
The format of the display is
Sn TT.T Example: s1 - 102.6 (Celsius)
SnF-TTT.T Example: s1f- 102.6 (Fahrenheit)
where n is the probe used for control. Upon entering the LOCAL mode from the
PROGRAM REMOTE or SETUP mode, the control probe defaults to 1 and the
setpoint is erased. If the setpoint has been erased, the “no setpoint” message
displays in lieu of the setpoint temperature. Example:
s1 nsp s1f nsp
To change either the setpoint temperature or the control probe (of a 2 probe
configuration only), use the following procedure:
1. First display the setpoint using <DISP/CNTL>.
2. Press <CLEAR/ENTRY> to clear the current value from the display. If
single probe mode is in effect, s1 or s1f will appear at the left of the
display indicating the control probe must be 1. If two probe mode is in
effect, the probe number is also cleared.
3. If the probe number is erased, (in two probe mode) enter the controlling
probe desired, either 1 or 2 for control by probe 1 or probe 2, or enter 0 for
Intelligent 2 Probe Control (See Section 4). If in single probe mode, ignore
this step.