Campbell SAT ARGOS Manual de usuario descargar pdf (Pagina 117)

ZENO

-3200 USER MANUAL

Coastal Environmental Systems (206) 682-6048

Page 109

6.7.7. Connecting A GOES Radio and Serial Sensors To The Same COM Port

You may wish to attach both a GOES radio and one or more serial sensors to the ZENO. This can be

done as long as the serial sensor(s) is not connected to the same line as the GOES radio. In the case of the

Telonics TGT-1 transmitter, the RS232, RS485 and Compass ports are available for serial sensor use. In

the case of the Campbell Scientific SAT HDR GOES transmitter, the TTL, RS485 and Compass ports are

available for serial sensor use.

6.7.8. GOES Transmitter Diagnostics

You can obtain basic diagnostic information on the state of the Telonics TGT-1 or Campbell Scientific

SAT HDR GOES transmitter by entering D from the GOES Menu. The ZENO

-3200 displays the

diagnostic information in a simple-to-read table.

6.7.9. Self-Timed Transmissions

Once you have set up the GOES parameters, the only additional step for self-timed transmissions is to

define a data output message to be transmitted over the COM2 port. Refer to Section 10.6 for details on

creating an output message. The output message can contain normal ASCII characters, or it can be in

binary format as described in Section 6.7.11. All output messages sent to COM2 will be buffered up by

the GOES transmitter and transmitted during its self-timed transmit window.

6.7.10. Random Transmissions

To generate random or emergency transmissions, you must perform the following steps:

 Set up a data output message to contain the data to be transmitted when the alarm message occurs.

128

This can be a normal ASCII message, or it can be in the binary format described below.

 In the Output Message Timing Menu, specify that the message is to be routed to COM2, and assign

the message a period of zero.

129

 In the Process Menu, set up a Dial-out Alarm Process to trigger the alarm message under the desired

circumstances.

130

Whenever the sensor or process input moves beyond the defined threshold level, a random transmission is

initiated. For example, by setting the sensor or process input to be a water level measurement, and by

setting the alarm threshold to a specified level, a random transmission can be initiated whenever the water

level reaches the specified value.

6.7.11. GOES Binary Format

The GOES binary format packs data into an efficient format that is suitable for transmission over a GOES

satellite (or other limited communications channel).

128

Refer to Section 11.2.

129

This will indicate that the message is not transmitted as a regular output message. Refer to Section 11.3.

130

Refer to Section 11.3.

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