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Section 3 • Hardware Architecture
Analog Output Boards
The Analog Output board convert signals form the Vission 20/20 program into a current ranging from 4mA to 20mA, see Figure
Voltage LEDs:
•Marked in the diagram below in Orange. These LEDs indicated the correct voltage of both the 5Vdc and 24Vdc power sources.
Communication LED’s:
•Marked in the diagram below in Green. These LEDs show the active communications between the digital output board and the Vission 20/20 CPU board.
Address Dipswitches:
•Marked in the diagram below in Red. These dipswitch- es are used to assign each board its address position. The addresses are binary and therefore the address of a digital output board will only be addressed as 10 (1010).
Figure 3-7. Analog Output Board Layout
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