Characters in the remaining time of the timer value is saved in the binary format, l instruction read binary in the timers time value into accumulator 1, known as direct mount. LC instructions to DCD format can also be used to read out time value, loaded in accumulator 1 low, called BCD code formats read … Continue reading PLC Siemens S7 series into time or count values
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PLC Siemens S7 series loading and transfer instructions
Mount (l) and transmission (t) command will store or store and Exchange data between process input and output. L directives in the source operand load accumulator •, existing data into the accumulator and accumulator 2, accumulator 2 existing content is overwritten. T command writes the contents of the accumulator 1 purpose store, contents of the … Continue reading PLC Siemens S7 series loading and transfer instructions
STEP7-Mirco/WIN software project management
1 print (1.) printing method of program and project documentsPrint program and project documents in the following way:Click the "print" button.Select the menu command "file" then "print".Press the CTRL + p shortcut key combination.(2). network and print a single itemFollowing a single block printed a series of network, or from a single symbol table or figure … Continue reading STEP7-Mirco/WIN software project management
STEP7-Mirco/WIN software Program status is displayed Function
When the program is downloaded to the PLC after, you can use the "status" function network operating and test procedures. 1. starting the program state 1, and in the process Editor window and shows you which programs you want to test and your network. 2,PLC on the RUN works, driver status monitoring changes to PLC data values. … Continue reading STEP7-Mirco/WIN software Program status is displayed Function
Siemens S7-200 PLC high-speed counter instruction Initialization
High speed counter instruction is initialized as follows:(1) first scans through a special internal memory scanning cycle SM0.1 to call a subroutine to complete initialization. Because the use of subroutines, in subsequent scans, no need to call this subroutine, to reduce the scanning time, make the program better.(2) in initial of of child program in … Continue reading Siemens S7-200 PLC high-speed counter instruction Initialization
How to use STEP 7-Micro / WIN software select the operating mode
PLC has stopped running and two modes. In different ways of working, PLC different methods of operation for debugging.² ² toolbar, click the "Run" button or the "Stop" button to enter the corresponding work.1. Select the STOP operating modeIn the STOP (Stop) mode of operation, you can create and edit programs, PLC in a semi-idle … Continue reading How to use STEP 7-Micro / WIN software select the operating mode
STEP7-Micro / WIN software to download the compiled program to the PLC or uploaded to the computer
1. DownloadIf you have successfully run the establishment of communication between STEP 7-Micro / WIN32 PC and PLC, you can download the compiled program to the PLC. If you already have content will be overwritten in the PLC. Download the following steps:(1) Before downloading, PLC must be in the "Stop" operating mode. Check the PLC … Continue reading STEP7-Micro / WIN software to download the compiled program to the PLC or uploaded to the computer
S7-300 PLC weighing module Introduction
SIWAREX U weighing module is a compact electronic scales, measuring silo and hopper material level, for monitoring crane loads, load measurement on conveyor belts or industrial elevator, mill overload safety protection. SIWAREX M weighing module is the ability to verify the electronic weighing and dosing unit can be composed of multiple materials weighing system … Continue reading S7-300 PLC weighing module Introduction
Siemens S7 200 PLC high-speed counter (HC)
High-speed counter for frequencies above scan cycle external signals are counted, using a dedicated high-speed counter terminals of the host to receive these high-speed signals. High-speed counter is a high-speed event counting, it is independent of the CPU scan, the data for the current value of high-speed 32-bit signed calculator.Format: HC [high-speed counter number] For … Continue reading Siemens S7 200 PLC high-speed counter (HC)
Siemens S7-200 PLC Timer Area (T)
Relay output is used to output signals transmitted to load PLC, is dedicated output process image register. It can only be driven program instructions. At the end of each scan cycle, CPU output image register value is copied to the physical output points, and the sampling value is written to drive the load. Output relay … Continue reading Siemens S7-200 PLC Timer Area (T)
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