DayTronic 4500 Skrócona instrukcja obsługi - Strona 10

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Host Section (Operator and Interfacing Management)

Touch Screen and Display

Touch screen and display operation of the unit is accomplished at a

refresh rate of approximately 4Hz. This gives the unit a reasonable

update rate enabling the user to monitor and configure the unit while

allowing the Host section to manage the tasks needed to maintain stand-

alone operation of the data acquisition process. The Host portion of the

4500 does not interrupt the DSP section, thus the unit – upon power up –

can scan and monitor the sensor and logic data regardless of whether it

is being configured, calibrated or interfaced by an external processor.

The 4500 provides users the ability to compose or develop custom

display pages for viewing depending on user application needs. The user

can select and configure any or a combination of the following elements

for the page display: data channels (real and calculated), logic bits, bar

graph representation of the data channels, trend graphs of the data

channels, touch button elements, X/Y graph of data channels, and a

notepad feature for adding instructional text or legend as required by the

application. Each of the composable pages may have up to 10 display

element fields.

Command and Control

Command and control within the 4500, internally thru the touch screen

configurator and externally using a computer or PLC, is done via a three

letter mnemonic syntax library that Daytronic has developed over the

years and based on earlier instrument series. The three-letter ASCII

syntax command and response mnemonic format allows the 4500 to be

configured easily via a standard ASCII interface protocol, adapting to any

computer or communications device as a "terminal" element. This allows

the unit to adapt to changing computer and microprocessor technology

with a simple and easy to understand interface protocol.

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Daytronic Model 4500 Quick Reference Guide