Rosemount 702, Справочное руководство

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Reference Manual
00809-0200-4702, Rev BA
June 2010
Rosemount 702
5-4
Dual Input, Opposing Contact Logic
When configured for Opposing Contact Logic, the 702 Discrete Transmitter
will accept the input from a single pole double throw switch on inputs S1 and
S2, and will use opposing contact logic for the determination of the wireless
outputs. The following tables describe the wireless outputs available when
using opposing contact logic.
Figure 5-4. Dual Input, Opposing
Contact
If inverted output is selected, any outputs will be inverted, as shown below.
Dual Input, Opposing Contact Logic
Switch Inputs Wireless Outputs
S1 S2 PV SV
Open Open FAULT(NaN) FAULT(NaN)
Open Closed FALSE (0.0) FALSE (0.0)
Closed Open TRUE (1.0) TRUE (1.0)
Closed Closed FAULT(NaN) FAULT(NaN)
Dual Input, Opposing Contact Logic, Inverted Output
Switch Inputs Wireless Outputs
S1 S2 PV SV
Open Open FAULT(NaN) FAULT(NaN)
Open Closed TRUE (1.0) TRUE (1.0)
Closed Open FALSE (0.0) FALSE (0.0)
Closed Closed FAULT(NaN) FAULT(NaN)
Dual Input
Opposing Contact
S1
CMN
S2
CMN