GDS C1, Инструкция по эксплуатации

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C1 Controller Users Manual
Revision 4.6
13
2.2.6a EUNITS / MEASUREMENT NAME ASCII DATA FIELDS
The first two items in this menu are for entering the 6 character engineering unit and 16
character Measurement Name ASCII fields. Eunits should define the units of measure for
what this channel is to display. Measurement Name should describe the source of this
data in the user’s terminology. Section 2.1.1 of this manual describes how to use the
front keypad to modify these fields.
2.2.6b INPUT MEASUREMENT RANGE
The ZERO / SPAN entries allow configuration of the measurement range displayed by
this channel. Measurement Range works along with A/D Counts menus, described in
section 2.2.4a, to define the range of the input signal’s engineering units. For example, if
a channel’s input is 4-20mA from a transmitter monitoring 0 to 10ppm chlorine, then the
Zero value should equal 0.000 and the Span value equal 10.00. The six ASCII
engineering units previously entered are automatically displayed at the top of each menu
as a reminder. Four digits must appear in this entry so trailing 0’s may appear here that
are not displayed on other data screens.
2.2.6c DECIMAL POINT RESOLUTION
Resolution of displayed channel values is configured in this menu by setting the number
digits trailing the decimal point. Values are limited to a maximum of four digits, and a
polarity sign. An auto-ranging feature displays the highest resolution allowed by this
menu’s decimal point entry. For example, if three decimal points are entered, and the
range is 0 to 100ppm, the reading will be
0.000 at 0ppm and 100.0 at 100ppm. However,
this may be undesirable due to the high resolution at zero unless the sensor’s output is
extremely stable. If decimal points are limited to one, the 0ppm reading becomes
0.0 and
the 100ppm reading remains 100.0 . Resolution may be limited further by setting decimal
points to 0. In the above example, this would cause 0ppm to display 0 and 100ppm to
display 100 .
2.2.6d TURNING OFF UNUSED CHANNELS
The Channel On? entry determines if this channel is to be utilized. Turning it off will
cause the controller to never process inputs applied to this channel and no alarms will be
tripped or data displayed. Inactive channels have a line drawn through them on the Setup
screen as indicated by channels 15 & 16 in Figure 2.0. If less than 9 channels are to be
activated, the C1 may be set for 8 channel mode, deactivating channels 9-16. This is
done in the System Setup menu described in section 2.3. The C1 will only allow 15
channels to be turned off. At least one channel must remain on
2.2.6e COPY DATA TO?
This menu simplifies the Setup procedure by allowing similar channels to be copied from
one to another. For example, if all channels are identical except for the
Measurement
Name entry, channel 1 could be configured and copied to channels 2 – 16. Only
Measurement Name then must be configured on channels 2 – 16. Use EDIT to increment
channel numbers and UP/DN to point to Copy Now? Press EDIT once more to copy.