3-2
3.3.2 Analog Calibration.
The analog output is calibrated independently of
the digital calibration and can be set using span
points anywhere between zero and full scale
capacity. The 0-10 V and 4-20 mA outputs CAN
NOT be calibrated independently. See Table 3-2
for complete analog calibration instructions.
3.3.3 Monitor Mode Calibration.
The terminal/computer interface option enables
the DXp-101L5 to be calibrated remotely from a
host computer or terminal. The monitor mode
functionally accesses the software routines used
to provide remote access via the keypad of an
LCp-40 Network Controller. In response, the
DXp-10/15 transmits two lines of information
similar to the two line display on an LCp-40. In
this mode the capacity, graduations, decimal
point, 5 point linearization and other values can
be established from the host device. Help
messages also can be accessed at any time to
aid in the set-up process. The procedure
recorded in Table 3-3 shows the command
sequence required to perform remote
calibration. Consult SECTION IV for serial
communication details.
3.3.4 LCp-40 Calibration.
When networked to an LCp-40, 41, or 42
controller, the DXp-10/15 can be remotely
calibrated using the controller display and
keypad. In this configuration, up to five
linearized span points can be entered. Appendix
E presents step by step flow diagrams for
remote LCp-40 calibration and parameter set-
up.
Figure 3-2. Set-up and Calibration Switch Locations (Shade)
Table 3-1. DXp-10 Digital Calibration
Instructions
[1].
Connect Load Cells and Remote
Terminal.
Install the load cells and wire them to the
DXp-10/15. Connect the RS 485 serial
output to a compatible terminal/readout
device. Select a compatible serial output
format and establish that the
communication link is operating (paragraph
3.2.3).
[2].
Establish Zero.
Make sure that all dead weight (vessel,
mixer, pipes, etc) is applied as it will be
during normal operation. Move the five
position slide switch (Figure 3-2) to the
digital zero position. Press the enter
button to acquire zero and wait
approximately 5 seconds for the zero
reference value to be stored. The red
OPTION STATUS LED will resume
flashing when the storage procedure is
complete.