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I/O Setup and System Configuration
7/99 9782 Series Conductivity/Resistivity Analyzer/Controller - Operator’s Manual 5-1
5. I/O Setup and System Configuration
5.1 Overview
Introduction
This section provides instructions for performing I/O setup and for configuring the
Analyzer/Controller’s software to implement your control strategy.
What’s in this section?
The topics in this section are listed below.
Topic See Page
5.1 Overview 5-1
5.2 I/O Setup and Configuration Tasks 5-2
5.3 Performing I/O Setup 5-4
5.4 Configuring Current Adjusting Type Control and/or Retransmission of Process
Variables
5-10
5.5 Configuring On/Off, Duration Adjusting Type (DAT) or Pulse Frequency Type
(PFT) Control
5-12
5.6 Configuring Alarms 5-16
5.7 Setting the Clock 5-17
5.8 Configuring AutoClean 5-18
5.9 Selecting a Computed Value To Be Displayed 5-21
5.10 Summary of Menu Choices and System Defaults 5-23
Powering up the Analyzer/Controller
Every time the Analyzer/Controller is powered up the unit performs a “warm reset”. During a
warm reset, alarms are not cleared, and outputs are maintained at their last value prior to the loss
of power or initiation of the warm reset. A warm reset has no effect on configuration or
calibration values.
In addition to this warm reset, a “cold reset” function is available to return ALL configuration
values to the factory settings shown in Table 5-10. During a cold reset some I/O setup values
will also be changed. In addition, the cal factor will be set to match the default cell constant, and
the calibration trim or TDS ( total dissolved solids) conversion factor will be removed,
eliminating any changes made using the calibration menu (see Section 8). All alarms will be
cleared. Analog outputs will go to zero momentarily, then go to the factory default values. A
cold reset can be initiated using a maintenance menu function as described in Section 10. It will
also be initiated during I/O setup if the measurement type, relay activation, display resolution,
cell constant, or an analog or discrete I/O assignment is changed.