Siemens Level 1 Exam Prep (Latest 2026/ 2027 Update) Questions and Answers

Exam

Siemens Level 1 Exam Prep (Latest 2026/ 2027 Update) | Questions & Answers | Grade A | 100% Correct (Verified Solutions) 2026/2027 | GRADED A+ | 100% ... VERIFIED Question: What is the basic function of a PLC? Answer Accept inputs, make logical decisions, and send outputs Question: What is the basic difference between a PLC and a relay control system? Answer One uses relay control logic and the other uses programmed instructions. Question: Field devices refer to... Answer All kinds of sensors and actuators that are physically wired to PLC input/output modules. Question: A contact that is usually opened will look like... Answer -I I- Question: An imaginary coil that, when energized, will activate a digital output contact looks like... Answer -( )- Question: A device used to convert a binary number to a 7-segment display format is... Answer Decoder Question: The largest number that can be represented with eleven binary bits is... Answer 2047 Question: The binary number 1010 0111 1100 0101 can be written in hexadecimal as... Answer A7C5 Question: The conversion of the decimal number 156 to 8421 BCD is... Answer 0001 0101 0110 Question: If a given memory unit consists of 2,400 bytes the memory capacity would be rated... Answer 2,400 bytes * 8= 19,200 bits Question: What is true about a NAND gate? Answer If all inputs are 0, the output will be 1. If one or more inputs are 0 the output will be 1. Question: If you want to know when one or both matching bits in two different words are logic '1' you would use the... Answer XOR instruction Question: A system contains two identical circuits operating in parallel. As long as both are operating properly, the outputs of both circuits are always the same. If one of the circuits fails, the outputs will be at opposite levels. To indicate the failure, the outputs of the circuits are connected to the inputs of... ? Question: The status bit of switches and pushbuttons connected to a PLC input module are stored in the... ? Question: Branch instructions used to create... Answer a series of energized output conditions. Question: By which system does the CPU communicate with input and output modules located on the same rack? Answer Interface module - IM Question: The Central Processing Unit (CPU) ... Answer Accepts inputs, makes decisions provided by the program, and sets outputs. Question: The PLC program is uploaded from the programming device into the PLC. Into what specific CPU-Memory of the PLC is the program loaded? Answer Process - image input table Question: What counter is available in STEP 7? Answer Up/Down counter Question: In programs that are written in ladder logic, all outputs are represented by... Answer schematic load device symbols Question: A move instruction copies data from... Answer a source byte to a destination byte Question: The maximum number of networks allowed in a Step 7 program is... Answer limited only by the memory size Question: The maximum number of outputs allowed per network in a Step 7 program is... Answer 1 Question: In PLC operation, a scan is usually a sequential process of... Answer reading the status of inputs, evaluating control logic, and updating outputs. Question: Parallel connections of a ladder logic program are typically called... Answer rungs Question: What kind of signal varies continuously? Answer Variable signal Question: An 8-bit binary counter has to count balls going into a box from a conveyor belt. A sensor detects the passing of a ball. If it has counted one hundred balls, the binary value of the counter is... Answer 0110 0100

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