Please, I´d like to know if I can connect a inductive proximity (PNP output) sensor in 2 PLCs inputs like the example in the image attached?
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\$\begingroup\$ Depending on the electrical noise present between those two PLC's, shielded cable may be a really good idea. \$\endgroup\$– rdtscCommented Jun 17, 2021 at 15:54
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\$\begingroup\$ Please list the model number of the proximity sensor \$\endgroup\$– Voltage Spike ♦Commented Jun 17, 2021 at 17:59
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2 Answers
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Yes if both use the same logic levels and shared gnd.. Only 1 Pull-up to Vcc required. This assumes the input impedance of both is >10 greater than the R pullup.
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\$\begingroup\$ Tony, very good...thanks so much for your collaboration. \$\endgroup\$ Commented Jun 17, 2021 at 18:48
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Alternatively, use the sensor to activate a relay and wire the PLC inputs through 2 NO contacts.
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\$\begingroup\$ Oh...yes, perfect...Excellent example. Thanks a lot Icecl. \$\endgroup\$ Commented Jun 17, 2021 at 18:50