| xPC Target | |
Onyx-MM boards have two digital I/O chips, each with three 8-bit digital I/O ports, for a total of 48 I/O lines. Each port can be configured independently for either input or output. Use a separate driver block for each port. Select the digital input driver block for a given port to configure the port for input.
Scaling Input to Output
| Hardware Input |
Block Output Data Type |
Scaling |
| TTL |
Double |
TTL low = 0.0 TTL high = 1.0 |
Driver Block Parameters
Channel vector -- Enter numbers between 1 and 8 to select the digital input lines used with this port. This driver allows the selection of individual digital input lines in any order. The number of elements defines the number of digital lines used.
For example, to use all of the digital inputs for the current port, enter
Number the lines beginning with 1 even if the board manufacturer starts numbering the lines with 0.
Port -- From the list choose A, B, or C.
Chip -- From the list choose 1 or 2.
Sample time -- Enter a base sample time or a multiple of the base sample time.
Base address -- Enter the base address of the board. This entry must correspond to the Base address board setting. For example, if the base address is 300 (hexadecimal), enter
| | Onyx-MM | Onyx-MM Digital Output | |