Hach 2200 PCX User Manual page 28

Information Description
Date The Date information is transmitted in the third through eighth characters of the record. The
second character is always a space to set apart the status character from the date
characters. The date format is MMDDYY (Month Day Year).
instrument collected and stored the data in the record on August 1, 1993.
Time Time information is transmitted in the tenth through the fifteenth characters of the record.
The ninth character is always a space to set apart the date from the time. The time format is
HHMMSS (Hours Minutes Seconds) military time.
and 50 seconds.
Period The period is the sample time or the length of counting time. The period information is
transmitted in the seventeenth through twentieth characters. The sixteenth character is
always a space, to set apart the time in the seventeenth through twentieth characters. The
period is shown in minutes and seconds. In
period is controlled by the computer ("e" command), the period characters will be zeros.
When the period (sample time) is controlled by the instrument ("d" command), the period
characters will show the sample time.
Data 1, 2, 3, 4, 5, These characters contain data from the different programmed instrument size ranges. Each
and 6 data value is before a three-character tag that identifies the size range of data that follows.
The tags and data are each before a space character for separation. The record contain as
many tag/data elements as necessary (a minimum of seven and a maximum of 10).
Tags The tags contain three characters that identify the type of data that will follow. If the data is a
particle count, the tag will show the particle size. In
count data comes after the 2.0 µ particle size range. The record data will be shown in the
units of measure that follow:
• Particle Counts....counts
• Analog Inputs...... milliamps (mA)
Data The data are six numeric characters before a space.
Checksum The sum of the ASCII value of each character in the data string. Used for testing accuracy of
data transmission.
End of Message The end of message characters will immediately follow the last tag/data element. There will
be no separation space. The end of message characters are a carriage return and line feed.
Information Type
Counter Data Status
Date
Time
Period
Count Data Range 1
Range 2
Range 3
Range 4
Range 5
Range 6
26 English
Table 7 Example for a count alarm change
Table 8 Serial communications format
Example code Description
$
080193
081350
0130
2.0 002682 The first two numbers identify the particle size and the final
six numbers report particle counts.
5.0 000334
8.0 000136
10. 000102
12. 000032
15. 000009
Table 8
Table 8 shows that the time is 8:13 A.M.
Table 8 the period was 30 seconds. When the
Table 8 the first tag shows that particle
—
shows that the