Emerson Rosemount 702 - Page 48

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Reference Manual
00809-0200-4702, Rev CA
Section 5: Operation and Maintenance: Models 702DX22 and 702DX61
February 2013
Operation and Maintenance: Models 702DX22 and 702DX61
Dual Input, Opposing Contact Logic
When configured for Opposing Contact Logic, the 702 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
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
S1
CMN
S2
CMN