6700 Portable Sampler User Manual - Isco

Analog Output Screens
Charts for analog output screens
appear in:
Figure 47, Analog Output and
Dialout Screens on page 133
Figure 48, Analog Output and
Dialout Quick View Screens on
page 133.
53
54
55
Programming the serial
output
PERIODIC
SERIAL OUTPUT?
YES NO
PORT SETTINGS:
9600N81 4800N81
2400N81 1200N81
SERIAL OUTPUT EVERY:
15 SEC 1 MIN
5MIN 15MIN
6700 SAMPLERS
Refrigerator Temperature
Isco offers a temperature sensor intended for use with the
6700FR Refrigerated Sampler. The optional sensor connects to
the Rain Gauge/YSI port and uses I/O3 to transmit its temperature
readings to the 6700.
To configure an attached temperature sensor, select “FR-TEMP”
as the input for I/O3. The 6700 will display the NEW HARD-
WARE SETUP screen. Select YES and the 6700 reconfigures its
memory partitions to record the temperature readings.
Temperature readings are updated approximately every 2.5 seconds.
The readings are stored as FR-TEMP readings at the data
storage interval. You can retrieve a history of temperature readings
through the 6700’s reports. The temperature data also can
be used as a sampler enable condition.
ANALOG OUTPUT
Isco offers multiple analog outputs as a factory installed option.
The number of isolated outputs can vary from one to three and is
specified at order time. The option is installed inside the controller
and includes a six-pin connector to interface with external
devices.
The analog outputs can be programmed for either 0-to-20 mA or
4-to-20 mA operation. With the exception of rain, any parameter
that the 6700 sampler is currently measuring can be used to control
any (or all) of the analog output channels. Programming the
outputs requires parameter levels at each end of the analog
range and then assumes a linear relationship between those
points. MANUAL CONTROL of each output is also available.
SERIAL OUTPUT
Serial ASCII data can be output through the controller’s interrogator
port. The output frequency is user-selectable: every 15 seconds,
every minute, every 5 minutes, every 15 minutes, or by
command.
To receive serial data as a periodic output:
1. Select YES at screen 53.
2. Select the appropriate baud rate setting in screen 54.Notethat
at all baud rates the data is sent with no parity, eight data bits,
and one stop bit. If you have difficulty with the connection, try
a slower baud rate.
3. Select the desired output interval in screen 55.
4. Connect to the 6700 controller’s interrogator connector using a
Serial Output interrogator cable (sense line open, P/N
60-9004-263). Do not use a standard interrogator cable.
To receive serial data by command:
1. Select NO at screen 53.
2. Connect your computer to the 6700 controller’s interrogator
connector using a standard interrogator cable (sense line
grounded), P/N 60-2544-040 (25 pin) or 60-2544-044 (9 pin).
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