SIREC D Display Recorder 7ND4000

Programming
4.6.8 Logarithmic Linear Point
Types. Five types of Log Linear point types can
be selected, three linear voltage logarithmic ranges:
+100mV log, +1 Volt log, and +10 Volt log,
and two types of linear current logarithmic ranges:
4 to 20mA log and 10 to 50mA log
A. Programming Parameters - Selecting
Log Linear point types requires setting up
parameters like regular Programming linear point
types except that the Low and High Exponents must
be set in Output Scales. From the Point Type menu
(Figure 4-12) use the UP (↑) or DOWN (↓) Arrow
Keys to highlight “Log Linear” and press ENTER.
The Point Setup menu for Log Linear will be
displayed and may require programming of the
following parameters.
• Point Tag (up to 10 characters)
• Input Scale
• Output Scale (Lo and Hi Exponents)
• Currents
• Filter (seconds 0 - 30)
• Engineering Units (Up to five characters)
• Alarm Setpoints (Limits, Deadband, and
Delay)
• Chart Scale
Each of these parameters with the exception of the
Output Scale is identical to that for Linear inputs
described above and the programming method is
the same. Refer to Paragraph 4.6.5 above for
description and programming information.
B. Output Scale - All Log linear current and
voltage inputs must be assigned low and high
output scale endpoints. The endpoints are the
exponent values (the x in 10 x ). Program the Output
Scale Endpoints as follows:
1. Use the UP (↑) or DOWN (↓) Arrow Keys to
highlight "Output scale". Press ENTER and the
display reads "places? X".
2. Use the UP (↑) or DOWN (↓) Arrow Keys to
scroll through the menu items to set the number of
decimal places and press ENTER. The display will
read "lo exp �XXX�“.
3. Use the numeric keypad to enter an exponent
value between +25 to -25 and press ENTER. The
display reads "hi exp�XXX�“.
4. Use the numeric keypad to enter an exponent
value between +25 to -25 and press ENTER to
return to the "Output scale" menu item.
4-26
4.6.9 Thermocouple (T/C) Point
Types. Several Thermocouple type points are
available for use.
A. Selecting Thermocouple Point Type -
The following instructions guide you in selecting a
Thermocouple Type:
1. From the Point Type menu (Figure 4-12) use
the UP (↑) or DOWN (↓) Arrow Keys to highlight
“T/C” and press ENTER. A list of available thermocouple
types is presented.
• J
• K
• T
• E
• R
• S
• B
• C
• Ninimo
• Nicro
2. Use the UP (↑) or DOWN (↓) Arrow Keys to
highlight the desired thermocouple type and press
ENTER. The Point Setup menu for Thermocouples
will be displayed and may require programming
of the following parameters:
• Point Tag (up to 10 characters)
• Decimal fix (0 or 1)
• Filter (seconds 0 - 30)
• Compensation (Local or External)
• Span/Offset (User Option)
• Engineering Units (Deg C or Deg F)
• Alarm Setpoints (Limits, Deadband, and
Delay)
• Chart Scale
B. Programming Parameters - Each of the
above parameters is discussed in detail in the
following paragraphs.
C. Point Tag - A Point Tag (name) can be
established for each point programmed. This tag
can be up to ten characters long. For programming
information, refer to Paragraph 4.6.5.A above.
D. Decimal Fix - Thermocouple (T/C) points
must be assigned a decimal place of either 1 or 0.
This enables temperature to be displayed with a
resolution of either 1 degree (0) or 0.1 degree (1).
1. Programming Decimal Fix - Use the UP (↑) or
DOWN (↓) Arrow Keys to scroll through the menu
items and highlight "Decimal fix". Press ENTER
and the display reads "places? X".
Siemens AG C79000-G7374-C211-01
SIREC D Manual