Connect Tech NT960/PCI Uživatelský manuál stáhnout pdf (Strana 77)

Chapter 4: Appendix E - 20mA Current Loop Option 4-25

Intellicon-NT960/PCI User's Manual, ver. 0.02

Current Loop Cable Wiring

You can wire the ACM/Flex16 with the 20mA Current Loop

option in various ways to communicate with 20mA Current Loop

peripherals. This section describes an example of a Current Loop

cabling scheme.

Figure 22 describes a 4 wire cabling scheme between a port on

the ACM/Flex16 and another port on an external device.

Figure 22: Current Loop wiring diagram(4 wire)

RxD +

TxD +

RxD -

TxD -

TxD +

RxD -

RxD +

TxD -

ACM/Flex16 Port

DB-9 connector

External Device

Connector

External

Current

Source

External

Current

Source

Note:

The example above illustrates a 20mA Current Loop cable wiring

configuration between one port of the ACM/Flex16 and another

port of an external device.

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