6712FR Refrigerated Sampler

Section 5 Extended Programming

5.19.3I/O Pin Programming Pins C, H, and I on the Rain Gauge Connector are user-con- figured as I/O1, I/O2, and I/O3 (Input/Output pins) respectively. Each pin can be either an input for sampler enabling, or an output for alarms.

Note

The state of the I/O lines is not defined when the sampler is

OFF.

The enable input requires a pulse signal of 5 to 15 volts. Teledyne Isco offers optional interface modules for converting from a 4-20 mA analog or pulse duration signal.

The alarm output can be set for any RUNNING PROGRAM or RUN ERROR state. In addition, the CONDITIONS output can report alarm conditions using the parameters the 6712 is con- figured to measure. You can set thresholds for one or two condi- tions and the CONDITIONS output can then trigger alarms when the measured parameters exceed the threshold.

Alarm function requires an alarm interface module, factory-installed talking modem, or external digital cellular modem (see Section 5.19.4 Dialout Alarms).

Teledyne Isco offers a module designed to provide one, two, or three contact closures. The alarm module can interface the sampler with many types of non-Isco devices. For more infor- mation about the alarm module, contact your Teledyne Isco sales representative.

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