A) digital input and output image area1. Enter mapping registers (digital input image areas) (I)Digital input image is S7-200CPU for the input signal state opened up a store. Register identifier for the input image I, at the beginning of each scan cycle, CPU to sample the input points and registers the sample values in the … Continue reading S7-200 PLC Data area
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Siemens S7-300/400 PLC Closed-loop control module
1, FM 355 closed-loop control module FM 355 closed-loop control channel 4, used for pressure, flow, liquid level control, optimum temperature control and PID algorithms. FM 355C analog output is 4 fracture of continuous controller, FM 355 s is 8 digital output point step controllers or pulse. CPU FM 355 people after a disruption or failure … Continue reading Siemens S7-300/400 PLC Closed-loop control module
EM235 module DIP switches selection
1, switch 6 on/off button to divide the table into two States unipolar/bipolar two full scale input. SW6=ON, select the unipolar; SW6=OFF, select dual polarity.2, switches 4 and 5 Select gain. SW4 and SW5 3 combinations, namely SW4=ON,SW5=OFF;SW4= OFF,SW5=ON;SW4= OFF,SW5=OFF. A case study of unipolar, when SW4=ON,SW5=OFF, full scale input 0 to 50mV,0 to 100mV … Continue reading EM235 module DIP switches selection
Siemens 200 PLC analog input/output
Analog input/output universal conversion formula you can use the following conversion:Ov = [(Osh - Osl)*(Iv - Isl)/(Ish - Isl)] + OslOf which:Ov: conversion resultsIv: conversion objectsOsh: conversion result limitOsl: conversion results lower limitIsh: conversion limitIsl: conversion of lower limitSTEP 7-Micro/WIN Programming Tips (Micro/WIN programming skills) Tip38 about how to achieve the conversion routines.For convenience of … Continue reading Siemens 200 PLC analog input/output
Pulse output (PLS/PLF) instructions
PLS (pulse) rising differential outputPLF (pulse) down along the differential output
PLC Timer Three basic usage
Basic usage of timers(1) TCDescription: X0 after 2s, Y0(2) loss delay faultFigure 3 power failure delays broken ladder diagram and sequence diagramNote: when X0 is ON, the normally open contact closure, Y0 connected and self-preservation; when X0 is off, the timer start time delay when X0 when time reaches the time timer setting is removed, … Continue reading PLC Timer Three basic usage
FX series PLC N:N network
FX1N series PLC respectively above the programming port cover plate removed, insert FX1N-485-BD Communications Board seats, according to the following diagram wiring N:N network.· N:N FX series network features, among the PLC network communication without programming, can be realized through simple settings between each PLC status or the value of shares. • When wiring note shielded … Continue reading FX series PLC N:N network
Mitsubishi FX2N PLC instructions- four-storey elevator control system
1~4 the stairs outside the request button, FU, FD;1~4 floor SQ1~SQ4 floor signals;In the boot button on the control panel signals;Elevator door opening and closing limit switch.Output signal:Lifting light,Elevator lift AC contactor KM1~KM2,Elevator door AC contactor KM3~KM4,The Bell.1. upon the request 1-4 outside staircase and elevator operation status timely response:Increase process, floor upstairs along the … Continue reading Mitsubishi FX2N PLC instructions- four-storey elevator control system
Mitsubishi FX series PLC counter ladder diagram
X3 to reset the counters C0 C0 X4 input pulse count, enter the number of pulses up to 6, counter C0 normally open contact closure, Y0. X3 action, C0 reset, Y0 loss
Mitsubishi FX series PLC Delay off timer Ladder diagram and sequence diagram
PLC ONE 