| Cogent CIF Driver for Hilscher Fieldbus CIF Cards : Version 6.4 | ||
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 | Appendix A. Test Scenario |  |
| Cogent CIF Driver for Hilscher Fieldbus CIF Cards : Version 6.4 | ||
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| | Appendix A. Test Scenario | |
Table of Contents
For developing and testing the Cogent drivers, we have set up our test equipment to simulate typical field applications. Although your situation will differ from this, you can use this scenario as an example for setting up your driver.
The environment of the test scenario looks like this:
The test scenario has a test application that sends commands to and handles input from the Cogent Driver. The driver is connected to the card, which is connected by a fieldbus to the Field IO: a WAGO-I/O-SYSTEM 750 Fieldbus Coupler. (Cogent software works with any fieldbus hardware; we chose this equipment because it suits our needs.) The Fieldbus Coupler is connected to several digital and analog input and output modules. Each of these modules is wired to a test panel with several input and output devices, such as knobs, meters, switches, lights, etc., as explained below.
A Fieldbus Coupler connects the I/O modules to the fieldbus. The test scenario can be used with any fieldbus protocol simply by changing the Fieldbus Coupler. The test panel is currently set up to handle Interbus, Profibus, and DeviceNet protocols. Whenever the Fieldbus Coupler is changed, the Protocol Selector knob on the test panel must be changed to the correct protocol before powering up.
A 2-Channel Analog Input Module is connected to the two volume knobs on the test panel. The corresponding data points in the driver are named volumeLeft and volumeRight.
A 2-Channel Analog Output Module is connected to the two meters on the test panel. The corresponding data points in the driver are named meterLeft and meterRight.
A Supply Module that supplies power to the digital modules.
A 4-Channel Digital Input Module is connected to the thumbwheel. Each of the 4 channels takes one bit. The 4 bits are used to represent the numbers 1-10 on the thumbwheel. The corresponding data point in the driver is named thumbwheel.
A 2-Channel Digital Input Module is connected to the two push buttons. The corresponding data points in the driver are named pushon_pushoff and pushbutton.
Two 2-Channel Digital Input Modules are connected to the four toggle switches. These are not currently in use, and have no corresponding data points in the driver.
Three 2-Channel Digital Output Modules are connected to the red and green lights. The corresponding data points in the driver are named GreenLight1, GreenLight2, RedLight1, RedLight2, RedLight3 and RedLight4.
A 2-Channel Digital Output Module with diagnostics is connected to the Sonalarm and the counter. The corresponding data points in the driver are named sonalert and counter. The diagnostics feature of the module uses red lights to indicate short-circuit or open-circuit errors. The toggle switch on the panel cuts power to the sonalarm, to test the open-circuit error. The corresponding data points in the driver for the error circuits are named sonalertFault and counterFault.
An End Module
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| 6.4. Interactive Interface |  | A.2. Cascade Architecture |
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