I am working on a SIL2 system with a control logix, and refering to control logix documentation, to achieve SIL2 each Input Discrete or Analog needs to be wired to two input modules.
Further it goes into 4-20mA transmitters to be wired with a 249 Ohm resistor and then wire them as Voltage input to the transmitters (Tech Note 71027).
Is there a way around to wire these as 4-20mA, as i would like to keep the ability to detect open wire.
Further it goes into 4-20mA transmitters to be wired with a 249 Ohm resistor and then wire them as Voltage input to the transmitters (Tech Note 71027).
Is there a way around to wire these as 4-20mA, as i would like to keep the ability to detect open wire.