46
c
HAPTER
4:
Operation
Model 335 Temperature Controller
The input display modes are unique in that they can be set temporarily by pressing
A
or
B
on the front panel. After the key is pressed, the user-assignable sensor name of
the respective input is displayed on the top line for 2 s, then the primary input display
mode becomes active for approximately 10 s before returning to the configured dis-
play mode. Subsequent presses of the same key before the 10-second timeout period
will toggle the temporary display between the primary (Input A, or Input B) and the
secondary (Input A Max/Min or Input B Max/Min) temporary display modes. This pro-
vides quick access to each input and each associated control loop for gathering infor-
mation or changing control loop parameters.
Press any active keys while the temporary display mode is active to reset the timeout
period of the temporary display. Press
Escape
to manually return the display to the
configured display mode. Press and hold a temporary display key (about 3 s) until you
hear an audible beep to cause the configured display mode to change to the currently
displayed input display mode associated with that key.
Menu Navigation:
Display Setup
Q
Display Mode
(Input A, Input A Max/Min, Input B, Input B Max/Min)
(each input can also be configured by pressing and holding
A
or
B
while the desired
mode is displayed)
Interface Command:
DISPLAY
4.3.1.4 Custom Display Mode
The custom display mode provides the ability to customize the displayed front panel
information to your preference. The display is divided into four quadrants. Each quad-
rant can be independently configured to display various information. These are the
options available.
D
None: the display location will be blank.
D
Input A or Input B: after choosing Input A or Input B for a custom display location,
you will be prompted to choose the units in which the sensor reading will be dis-
played. The choices are Kelvin, Celsius, Sensor, Min, Max, or Name. Selecting
Name will display the input letter, followed by the first nine characters of the
input’s user configurable sensor name. If two adjacent display quadrants in the
same row (locations 1 and 2, or locations 3 and 4) are both configured to display
the input sensor name, then the entire 15-character name will be displayed on
the corresponding line.
D
Setpoint 1 or Setpoint 2: this option displays the setpoint of the control loop asso-
ciated with the specified output. If no control loop is configured (either Control
Input is set to None or Output mode is set to Monitor Out or Off ), then the display
location will be blank. If the Output mode is set to Open Loop, then the Manual
Heater Output setting will be displayed, since this is considered the setpoint for
the Open Loop control mode.
D
Output 1 or Output 2: this option displays the output number, followed by the
heater output percentage, and the heater range of the specified output.
Custom display modes
Menu Navigation:
Display Setup
Q
Display Mode
(Custom)
Interface Command:
DISPLAY
FIGURE 4-6
