
ZENO
®
-3200 USER MANUAL
Coastal Environmental Systems (206) 682-6048
Page 239
communications port that supports one or more serial sensors can cause interference with both data
collection and User Interface communications.
Coastal Environmental Systems recommends that you reserve one
communications port (either COM1 or COM3) for bi-directional User
Interface communication.
Since COM2 is fully multiplexed and since it provides four independent
communication routes, Coastal Environmental Systems recommends that
you start with COM2 for locating serial sensors.
If COM1 or COM3 is NOT being used for any User Interface
communication, Coastal Environmental Systems recommends that you
locate at least one serial sensor on the unused communications port to
relieve timing demands on COM2.
6. Follow the procedure described in Section 12.1.8 for determining the timing for multiple serial
sensors sharing the same communications port.
12.4. SHARING DATA BETWEEN MULTIPLE ZENO
®
-3200'S
(MULTIPROCESSING)
You may have a situation in which you are measuring data using one or more sensors connected to one
ZENO
®
-3200, that is required by one or more other ZENO
®
-3200's in order process their data. Further,
you may want to log all the data collected by all ZENO
®
-3200's on the first ZENO
®
-3200. Such a
situation would be defined as multiprocessing.
Multiple ZENO
®
-3200s can share data by using a combination of regular
CCSAIL Sensors and Asynchronous CCSAIL Sensors so that the bi-
directional data messages don’t interfere with one another.
Setup the primary ZENO
®
-3200 to broadcast an automatic data message in the form of a CCSAIL data
(sensor) message. Set the destination address in the CCSAIL data message to 9999.
In each of the secondary ZENO
®
-3200's, setup an Asynchronous CCSAIL Sensor to receive the data
message from the primary ZENO
®
-3200.
Setup the data output message from each secondary ZENO
®
-3200 in the form of a CCSAIL sensor
message that is NOT sent out automatically.
In the primary ZENO
®
-3200 setup a regular CCSAIL Sensor for each of the secondary ZENO
®
-3200's.
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