Panametrics DigitalFlow GC868, Руководство по программированию, Страница: 35 / 134

DigitalFlow™ GC868 Programming Manual (2-Channel) 1-24
Chapter 1. Programming Site Data
Note:
Be sure to record all programmed data in Appendix B,
Data Records
.
1.7.3.1 Selecting Error
Handling
This menu option permits programming of the manner in which the Model GC868’s
totalizers respond during an error condition. See Chapter 2,
Error Codes and Screen
Messages
, of the
Service Manual
for a discussion of the built-in error codes.
1. At the I/O prompt, press
[F1]
(Error).
2. Press [F1] if you want the GC868 to
Hold
the last “good” reading and continue to
totalize, based on that reading, or press [F2],
No Up, if you want the meter to stop totalizing.
3. Press [F1]
= NO
to disable 2-path error handling, or press [F2] = YES to enable
2-path error handling.
For the AVE mode, the 2-path error handling option is intended for applications
where two sets of transducers are installed in the same location in the same pipe to
improve accuracy. With this function enabled, the Model GC868 performs error
handling only if both channels are in error. If this function is disabled, error handling
occurs when either channel goes into error. Specific responses of the display and the
totalizer to the 2-path error handling option are listed in Table 1-5 below.
The
User Program
automatically returns to the Global I/O prompt.
1.7.3.2 Setting Up Option
Cards
The Model GC868 has two built-in analog outputs, which are assigned to Slot 0 . Also,
a variety of option cards may be installed in the six expansion slots. See Chapter 1,
Installation
, of the
Startup Guide
for a complete description of the available option
cards.
Note:
For this discussion,
Slot x
will be used to reference any of the specific
expansion slots
(Slot 1 - Slot 6)
. If the number of a slot with an installed
option card does not appear, the card may not have been initialized or it
may be defective. Call the factory for assistance.
• Use the [
←
] and [
→
] and the [F1]-[F4] keys to select the desired slot number.
(Only those slots which contain an option card will appear on the option bar.)
Refer to the menu map in Figure A-4 on page A-4 and complete the following steps
to setup and/or scale the Model GC868’s analog inputs and outputs.
1.7.3.2.1 Slot X Analog
Outputs
1. Use the [F1]-[F4] keys to set up outputs A, B, C or D, respectively.
Note:
The set up of output A is used as an example. Identical procedures would be
used to set up the other outputs.
2. Press [F1] = OFF to disable output A and return to the previous prompt, or press
[F2] = 0-20 m or [F3] = 4-20 m to specify the desired range for output A.
3. Use the [
←
] and [
→
] and [F1]-[F4] keys to select a Channel option for the data
source.
4. Use the [
←
] and [
→
] and [F1]-[F4] keys to specify the desired
Output
Measurement
parameter.
5. Enter the Zero value for the low end of the chosen output range. Press [ENT] .
6. Enter the
Full
value for the high end of the chosen output range. Press [ENT] .
Table 1-5: 2-Path Error Response Options
Option Totalizer Response
NO
Outputs the average of CH1 and CH2 totals,
regardless of the error state of either channel.
YES
1. If one channel is in error, totalizing continues.
2. If both channels are in error, totalizing stops.