W&T Electronics 13011, Руководство пользователя

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46
W&T
Serial PCI cards
The operating mode can be set separately for both loops using
the external wiring of the card. Examples for wiring the PC card
in active/passive mode can be seen in the following drawings:
RxD +
RxD -
TxD +
TxD -
Active
/
Passive
20mA device
Active Tx and Passive Rx Current Loop Application
20mA Interface
1
2
3
4
6
7
8
9
Data Out 20mA
Data Out+
Data Out -
Data Out GND
Data In 20mA
Data In+
Data In -
Data In GND
RxD +
RxD -
TxD +
TxD -
Active
20mA Device
Passive Tx and Passive Rx Current Loop Application
20mA Interface
1
2
3
4
6
7
8
9
Data Out 20mA
Data Out+
Data Out -
Data Out GND
Data In 20mA
Data In+
Data In -
Data In GND
RxD +
RxD -
TxD +
TxD -
Passive
20mA Device
Active Tx and Active Rx Current Loop Application
20mA Interface
1
2
3
4
6
7
8
9
Data Out 20mA
Data Out+
Data Out -
Data Out GND
Data In 20mA
Data In+
Data In -
Data In GND
PCI card 13410
PCI card 13410
PCI card 13410