DAQ system PCIe-DIO02, Руководство пользователя

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PCIe-DIO02 User‟s Manual
25
< Digital Input Terminal Board Circuit Configuration >
IN_COM0
DIN0
in0
2.4K
3.3V
DIN1
in1
3.3V
DIN7
In7
3.3V
2.4K
2.4K
Terminal Board
ACC-DIO_B_INPUT
ACC-DIO_E_INPUT
PCI-DIO02
VHDCI Conn.
330
330
330
1
2
4
3
1
2
4
3
1
2
4
3
In the figure above, the digital input circuit is isolated by a port coupler. When a positive voltage is
applied to the "IN_COM" side and a negative voltage is applied to the digital input, a current flows
through the diode inside the photo coupler and the output side transistor is energized in accordance
with the flowing current.
The terminal board
ACC-DIO_B_INPUT is equipped with four circuits as described above. That is,
there are four IN-COMs for every eight photo couplers. In addition, the extended terminal board
ACC-DIO_E_INPUT is equipped with four circuits as described above. That is, there are four IN-COMs
for every eight photo couplers.
In addition, ACC-DIO_B_INPUT and ACC-DIO_E_INPUT can be connected to the remaining ports
(J1 connection) to be used as a total 128-bit input board.