- #SIEMENS STEP 7 COUNTER EXAMPLE HOW TO#
- #SIEMENS STEP 7 COUNTER EXAMPLE SERIAL#
- #SIEMENS STEP 7 COUNTER EXAMPLE SOFTWARE#
- #SIEMENS STEP 7 COUNTER EXAMPLE PC#
#SIEMENS STEP 7 COUNTER EXAMPLE SOFTWARE#
With this method - I can keep software overheads cheap. please.? Excuse me for wanting to fly before I can even crawl. How do I write / draw the LAD file, so that I can do this. 10000's - so that I can count like in power meter mode.hmmm. (of course - I have only three counters - but the wish is to have maybe 1's.10's.100's.1000's.
#SIEMENS STEP 7 COUNTER EXAMPLE PC#
to my PC = which has a program - to write RS232 incoming values to a file.).
#SIEMENS STEP 7 COUNTER EXAMPLE SERIAL#
then I wish to count these pulses - and then SEND them from the CV value for the counters - on the serial port.
(the wish - is to count some pulses from a "power unit" - that gives 1 pulse for every 100 watt power used. but nevertheless - it is good to try to learn something newer everyday.!!!!!!Ģ) - I would like to make a project - where I have three (3) counters, or more- (UP Count) - so they are daisy chained. Unfortunately - I do not have the serial port for my 1212C - S7-1200. I am sure though that you need to use the other faculties of the PtP system, for serial.? yes.? - or NO.? I am surprised at how simple it really is. I have found and downloaded your program - for. Set IB 0.0 to 0 and repeat set IB 0.0 to 1 again, see the count in counter increase and store to DB1.DBW0.ĭouble click on DB1 in Simatic manager, to open DB1 editorĪnd check data in DB1 in PLCSim and Program Object Data Block, it must be same.As second example, here is a project that recive data from HyperTerminalĪttachment: HyperTerminalRecive_RS232.zip (119 Downloads) Set IB 0.0 to 1, and see counter in C 0 count 1 and counter store data into DB1.DBW0. Run PLCSim with click on PLCSim icon.Īnd create input output variable for IB 0 (Input), C 0 (Counter), and DB1.DBW0 (Data Block). We only use Input counter CU and Counter Value CV for store data in DB1. In this case, we will not use all parameter in S_Cu Function. Click OK.Įxpand folder counter in library, select S_CU function and drag to, main window. When Properties – Organization Block Window open choose LAD in Created in Language. Now we create program to write data to Data Block, in simatic manager double click on OB1. In Dataįill the Data Block like figure below, Click save for save all changes. The Type, an Initial value as well as aComment (optional) are entered.The address is automatically generated and cannot be altered. The Data Block is generated with a symbol Name. Open the data block DB1 with double click or open object. For Symbolic Name and Symbolic Comment is optional. Insert Data Block, in INSERT menu select S7 Block and then Data BlockĮnter the number for Data Block in Name and type (in this case I set DB1), choose Shared DB so DB can accessed by another program. Insert a new S7-Program, in INSERT menu select PROGRAM and then S7 PROGRAM Start from Step 1: Setup PG/PC Interface, Step 2: Create New Project and Step 3: Add Station Object
#SIEMENS STEP 7 COUNTER EXAMPLE HOW TO#
How to Generate Data Blocks (DBs) in Simatic S7-PLCSimįollow Step 1 to Step 3 of the article about Learning PLC Programming With SIMATIC S7-PLCSIM For more detail you can see in table below 1 Bool have length 1 Bit, and 1 Byte have length 8 Bit. In the figure 2, 1 box represent 1 Bit memory. Time types (s5Time, Time, Date, Time_of_Day).Mathematical data type (Int, Dint, Real).Bit data Type (Bool, Byte, Word, DWord, Char).
Figure 2 show the addressing data elements in Simatic Step7.
for the saving of data and system states.īefore create Data Blocks (DBs), we must understand about addressing Data in Simatic Step7. In the program structure from STEP 7, data blocks are found as follows:ĭata blocks are generated and opened like program blocks in the tool LAD, STL, FBD: Programblocks. This structuring of a DB follows through input in a table with the tool LAD, STL, FBD - S7 Block Programming. BOOL or WORD) can be saved in arbitrary order. Global DBs, where all OBs, FBs and FCs read all saved data or can even write in the DB and local instance DBs, which are assigned a particular FB. Your hard disk contains up to 8 Kbytes(8192Bytes) space. Data Blocks (DBs) can be used by your program to save data in the CPU.
0 kommentar(er)
