Red Lion Controls Hardware Design Engineer Interview Questions and Answers

DCS, PLC and SCADA systems use various communication protocols such as Modbus, Profibus, Ethernet/IP, etc.

• DCS systems use protocols like Modbus, Profibus, HART, Foundation Fieldbus, etc.

• PLC systems use protocols like Modbus, Ethernet/IP, Profinet, DeviceNet, etc.

• SCADA systems use protocols like Modbus, DNP3, OPC, IEC 60870-5, etc.

• Each protocol has its own advantages and disadvantages, and the choice of protocol depends...read more

Safety action refers to any action taken to prevent or mitigate potential hazards or risks.

• Safety actions can include implementing safety protocols and procedures, providing safety equipment and training, conducting safety audits and inspections, and addressing safety concerns raised by employees or customers.

• Examples of safety actions include installing guardrails on a construction site, providing personal protective ...read more

Name mangling is a technique used by compilers to give unique names to functions and variables to avoid naming conflicts.

• Name mangling is used in C++ to support function overloading.

• It is also used in Python to avoid naming conflicts in modules.

• Name mangling can make it difficult to access variables and functions from outside the class in which they are defined.

• In C++, name mangling can be seen by using the 'nm' comman