Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Instruction Manual - Manual (Page 121)

4.3 DISPLAYS 3, 4, 5, AND 6 - POINT DISPLAYS (CON0-3)
Displays 3, 4, 5, and 6 are point displays (see Figure 4-3). A point display provides loop control
information with bar graphs and digital readouts. The type of bar graphs presented can be selected
by the value loaded into the Control Display Mode (CDM0-3) datapoint (B339, B344, B349, or B354,
as applicable) of the CON module for the point display. If the value loaded into the CDM is 0, then
the point display will have a Standard PID presentation. Because this is the most common selection
made, point displays 3, 4, 5, and 6 (CON0-3) are used in the Section 4.3.1 to illustrate Standard PID
displays (CDM0-3 = 0). However only point display 3 (CON0) is used in Sections 4.3.2 through 4.3.6
to describe the Indicator (CDM0 = 1), Manual Loader (CDM0 = 2), Ratio Controller (CDM0 = 3),
Auto/Manual Station (CDM0 = 4), and Ratio Auto/Manual Station (CDM0 = 5) graphical presenta-
tions. It should be noted that the resident Control Strategies (CSs) set the CDM datapoints as
required.
On four of the point display selections (CDM = 0, 3, 4, and 5), large status alpha indicators appear on
the display near the output decrease (left arrow) faceplate push button. The function of the status
indicators is identical for all four CDM variations of the point displays. The alpha character on the
right indicates Local, Remote, Ratio, Computer (R), or External Override and the alpha character on
the left indicates Manual, Automatic, or Tracking/Override control mode. The functions of these
indicators are summarized in Table 4-3 as follows:
Table 4-3. Status Indicators
Indicator State Function
Right Character
L Steady Local (faceplate) setpoint push buttons affect the setpoint setting.
R Steady Remote/Ratio/Computer. Remote indicates remote setpoint control. If
Ratio, the setpoint push buttons affect the setpoint ratio term K1. If
Computer, a remote computer is directly controlling the final element.
The meaning of R is determined by the control strategy and instrument
application, e.g., a controller connected to a wild variable and a controlled
variable that is configured as a CS3 - Ratio Controller would have an R
indicator that means Ratio.
R Blinking Operator Remote selected, waiting for remote enable (local).
E Steady External/Override setpoint.
Left Character
M Steady Manual output push buttons affect output.
A Steady Auto Output Control. Output is determined by controller PID algorithm.
A Blinking Operator Auto Output Control requested; waiting for auto enable (manual).
T Steady Tracking/Override output. Tracking is when the output is being
overwritten with a varying value regardless of the Auto/Manual switch
setting. Override is when the output is being overwritten with a fixed
value regardless of the Auto/Manual switch setting.
The faceplate push buttons do not operate in the same manner for all variations of the point displays.
When the Remote push button is activated, the operation of the setpoint push buttons can be
modified based on the value in the Setpoint Mode (SPM0-3) datapoint (B338, B343, B348, or B353,
as applicable) of the CON module for the point display. Although independent of the display
presentation, an SPM can alter the setpoint increase and decrease push buttons to modify the
remote setpoint ratio term (K1) while in ratio operation (CDM = 3 - Ratio Controller, and CDM = 5 -
53MC5000 Process Control Station
4-8