Appendix; Item Code Types; Volume Items - Honeywell CNI4 Operating And Installation Manual

9 Appendix

9 Appendix

9.1 Item Code Types

There are two basic item code types used in the CNI4 — Direct-read and Configuration. Direct-read items
are mainly used to store information or to accumulate readings. Except during the initial installation,
these items are normally just read periodically to obtain the accumulated information. However, if
needed, these values may be changed by directly typing in new information from the keyboard.
Configuration items are used to configure the CNI4 device.

9.1.1 Volume Items

Ch Item # Item Name
Ch1 Accumulated Volume
002
910
Ch2 Accumulated Volume
Ch1 Inc Accumulated Volume
226
911
Ch2 Inc Accumulated Volume
Ch1 Input Pulse Value
098
Ch2 Input Pulse Value
912
Select:
0 - 1 CF
1 - 5 CF
2 - 10 CF (Default)
3 - 100 CF
4 - 1000 CF
5 - .1m3
6 - 1 m3
7 - 10 m3
8 - 100 m3
9 - 1000 m3
10 - 10000 CF
12 - 50 CF
13 - 500 CF
Ch1 Input Pulse Scaling
114
Ch2 Input Pulse Scaling
913
Default = 1.0000
000 - Ch1 FixedFactor Volume
000
098 - Ch2 FixedFactor Volume
908
Description
Totalized Accumulated Volume based on the
volume signal connected to its input. The totalized
value is scaled to the volume unit selected at item
092 for Ch1 and item 458 for Ch2. The number of
digits is defined by item 097 for both.
The Incremental Accumulated Volumes are the
same as Accumulated Volume (items 002 and
910) but is initialized (re zeroed) at the beginning
of every Log Interval, (Hourly or Daily) as defined
by item 202. If the CNI4 is accessed via a serial
connection, this item will display the current value
for that point in time.
Use codes (0-13) to select the value for each
pulse received at Ch1 or Ch2 inputs. This selection
must agree with the gas meter drive rate or meter
pulse value when connected to a meter. When
connected to a volume corrector, the value must
agree with the value assigned to the corrector's
output pulse.
Additional scaling for item 098 and 912 (Input
Pulse Value), if required. Usually needed when the
volume input is a value other than 0.1, 1, 5, 10,
100, or 1000.
Totalized Accumulated Volume for Ch1 and Ch2,
multiplied by a user-assigned scaling factor
provided by item 044 for Ch1 and item 440 for
Ch2. The totalized value is then scaled to the
volume unit selected at item 090 for Ch1 and item
457 for Ch2. The number of digits is defined by
Honeywell
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