Measurement-computing USB-DIO96H User Manual download pdf (Page 13)

USB-DIO96H User's Guide Functional Details

Board label

Signal name

Board label

Signal name

Port 2

P2A0 (SECONDPORTA Bit 0)

Port 4

P4A0 (FOURTHPORTA Bit 0)

P2A1 (SECONDPORTA Bit 1)

P4A1 (FOURTHPORTA Bit 1)

P2A2 (SECONDPORTA Bit 2)

P4A2 (FOURTHPORTA Bit 2)

P2A3 (SECONDPORTA Bit 3)

P4A3 (FOURTHPORTA Bit 3)

P2A4 (SECONDPORTA Bit 4)

P4A4 (FOURTHPORTA Bit 4)

P2A5 (SECONDPORTA Bit 5)

P4A5 (FOURTHPORTA Bit 5)

P2A6 (SECONDPORTA Bit 6)

P4A6 (FOURTHPORTA Bit 6)

P2A7 (SECONDPORTA Bit 7)

P4A7 (FOURTHPORTA Bit 7)

P2B0 (SECONDPORTB Bit 0)

P4B0 (FOURTHPORTB Bit 0)

P2B1 (SECONDPORTB Bit 1)

P4B1 (FOURTHPORTB Bit 1)

P2B2 (SECONDPORTB Bit 2)

P4B2 (FOURTHPORTB Bit 2)

P2B3 (SECONDPORTB Bit 3)

P4B3 (FOURTHPORTB Bit 3)

P2B4 (SECONDPORTB Bit 4)

P4B4 (FOURTHPORTB Bit 4)

P2B5 (SECONDPORTB Bit 5)

P4B5 (FOURTHPORTB Bit 5)

P2B6 (SECONDPORTB Bit 6)

P4B6 (FOURTHPORTB Bit 6)

P2B7 (SECONDPORTB Bit 7)

P4B7 (FOURTHPORTB Bit 7)

P2C0 (SECONDPORTC Bit 0)

P4C0 (FOURTHPORTC Bit 0)

P2C1 (SECONDPORTC Bit 1)

P4C1 (FOURTHPORTC Bit 1)

P2C2 (SECONDPORTC Bit 2)

P4C2 (FOURTHPORTC Bit 2)

P2C3 (SECONDPORTC Bit 3)

P4C3 (FOURTHPORTC Bit 3)

P2C4 (SECONDPORTC Bit 4)

P4C4 (FOURTHPORTC Bit 4)

P2C5 (SECONDPORTC Bit 5)

P4C5 (FOURTHPORTC Bit 5)

P2C6 (SECONDPORTC Bit 6)

P4C6 (FOURTHPORTC Bit 6)

P2C7 (SECONDPORTC Bit 7)

P4C7 (FOURTHPORTC Bit 7)

CTR

GND

Digital I/O (FIRSTPORTA Bit 0 to FOURTHPORTC Bit 7)

You can connect up to 96 digital I/O lines to the four banks of screw terminals (Port 1 to Port 4). Connect up to

24 DIO lines to each screw terminal group:

 Connect up to 24 FIRSTPORT signals to the PORT 1 terminals.

 Connect up to 24 SECONDPORT signals to the PORT 2 terminals.

 Connect up to 24 THIRDPORT signals to the PORT 3 terminals.

 Connect up to 24 FOURTHPORT signals to the PORT 4 terminals.

You can configure each digital port for either input or output. When configured for input, you can use the

digital I/O terminals to detect the state of any TTL level input. Refer to the schematic shown in Figure 6.

Figure 6. Schematic showing switch connection to digital channel FIRSTPORTA Bit 0

When set to the +5V input, FIRSTPORTA Bit 0 reads 1. When set to GND, FIRSTPORTA Bit 0 reads 0.

Output (sink) current limits

Each DIO pin can sink 64 mA maximum when configured for output.

Output (source) current limits

Each DIO pin can source 24 mA maximum when configured for output.

For more information about digital signal connections

Additional information about digital signal connections and I/O techniques is available in the Guide to Signal

Connections (available on our web site at www.mccdaq.com/signals/signals.pdf).

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Measurement-computing USB-DIO96H User Manual Page 13

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