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
Category: plc program
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
Siemens new PLC program, data storage cards
MMC card is the new Siemens PLC program, data storage, and present several PLC should be used for the following products:Order product name6ES7 314-1AF10-0AB0 new CPU 3146ES7 new CPU 315-2AG10-0AB0 315-2DP6ES7 312-5BD00-0AB0 CPU 312C6ES7 313-5BE00-0AB0 CPU 313C6ES7 313-6CE00-0AB0 CPU 313C-2DP6ES7 313-6BE00-0AB0 CPU 313C-2PTP6ES7 314-6CF00-0AB0 CPU 314C-2DP6ES7 314-6BF00-0AB0 CPU 314C-2PTP6ES7 613-1CA00-0AE3 C7 6136ES7 635-2EC00-0AE3 C7 635 … Continue reading Siemens new PLC program, data storage cards
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
Siemens PLC analog module usage questions
S7-200 analog input module (EM231,EM235) addressingEach analog expansion module, sorted by extension modules in the order, in which the analog input and output according to different sorting, respectively. Analog data format is one word, so the address must begin with an even number of bytes, precision 12-bit; analog values with the value 0-32000. Input format: … Continue reading Siemens PLC analog module usage questions
The difference between Siemens PLC and S7-300 S7-200, S7-400
The main class is one of the programmable logic controller and module difference was S7-200 belonging to the basic entry level, while S7-300 and S7-400 relative to the use of higher-end. Siemens plc is the serial number of the product.---->S7 200: in the electric control system for small, focused on logical control;---->S7 300: for larger … Continue reading The difference between Siemens PLC and S7-300 S7-200, S7-400
S7-300/400 PLC Indirect addressing
Using local variables DWORD LD20 as a pointer, the pointer address is P#4.3. Statement form can be INDIRECT when the status monitor (indirect) pointer address LD20 4.3. M [LD 20] corresponds to the actual address is M4.3.
S7-300/400PLC pulse method
Method one: CPU clock memoryCPU in the hardware configuration properties "Cycle/Clock Memory" in the "Clock Memory" setting the Memory Byte, you can look at to help, each one having a fixed frequency "Propreties" window click on the "Cycle/Clock Memory" (loop memory/clock) tab, you can set the "Scan cycle monitoring time" ( Scanning cycle monitoring time … Continue reading S7-300/400PLC pulse method
The difference between Simens PLC programming FB and FC
FB--function blocks, blocks with background dataFC--function, or functionThey Zhijian of main difference is: FC using of is shared data block, FB using of is background data block lift a example, if you to on 3 a parameter same of motor for control, so only need using FB programming plus 3 a background data block on … Continue reading The difference between Simens PLC programming FB and FC
PLC ONE 