The critical path methodology is simply a technique used to identify all the tasks that will directly impact the project end date. Note that it is not necessarily the path with the most activities. The path with the longest total duration is the critical path. One activity will be dependent upon the completion of five others with another activity being dependent upon 20 on a different path.Īdd together the durations of every activity on each path. Once all the dependencies are established, you will see different paths because not all activities will be related to each other. For example, walls must be framed before plumbing can begin. Next, establish the dependencies between all the activities. To begin, assign an estimated duration for every project activity. In other words, add together the durations of each activity on every path. Value in MW 2 is 0 because value in MD 4 still in range FC 106 and PQW set value 27648 (as limit range in unipolar).To calculate the critical path on a project network schedule, simply determine the path with the longest duration. Set input value out of range (0 – 27648), data in MD 4 set into Hi_LIM 1.000000e+002 and MW 0 (RET_VAL) is 8.
As described, we set FC 105 with unipolar data (rang input 0 – 27648), when input still in the range there no error and MW 0 is 0. Compare data between PIW 256 and PQW 272, data must be same because we use Unscale data in MD 4 to PQW 272. Data in MD 4 is scaling from input PIW 256 with rang 0 – 100. Slide the slider PIW 256, and see data in MD 4. Change PLC condition to RUN, and position PIW 256 in 0. PIW we set with Slider:int, in simulation we will change input linearly and see the change in MD 4 and output PQW 272. Create input and output variable like figure 7.
Convert ab project to simatic manager download#
Step 4 : Download Program and Run Simulationĭownload program into PLC, and run PLCSim. FC106 also returns an error by setting the RET_VAL to W#16#0008(hexadecimal).FC106 stores the integer value in PQW272 (parameter OUT). If the function is executed without error, FC106 sets the RET_VAL (MW4) to W#16#0000 (hexadecimal).If the input integer value is greater than 400 (HI_LIM) or less than 0 (LO_LIM), FC106sets the output (OUT) to 27648 or 0.00, respectively. Right click below network 1 for add new network, and select Insert New NetworkįC106 reads real number stored in memory MD4.Same with FC 105, the state of M 1.1 (parameter BIPOLAR) determines whether the input value is bipolar or unipolar.Because the value of M 1.1 is 0, FC106 processes the analog input as unipolar number (0 to 27648).FC106 converts the Real number that is scaled between 0.00(parameter LO_LIM) and 100.00(parameter HI_LIM). FC105 also returns an error by setting the RET_VAL to W#16#0008(hexadecimal).FC105 stores the scaled value in MD4 (parameter OUT). If the function is executed without error, FC105 sets the RET_VAL (MW2) to W#16#0000(hexadecimal).If the input integer value is greater than 27648 or less than 0, FC105sets the output (OUT) to 100.00 (HI_LIM) or 0.00 (LO_LIM),respectively. FC105 converts the integer value to a Real number, FC105 scales the Real number to a value between 0.00 (parameter LO_LIM) and 100.00 (parameter HI_LIM). For this example, the state of M 1.1 (parameter BIPOLAR) determines whether the input value is bipolar or unipolar.Because the value of M 1.1 is 0, FC105 processes the analog input as a unipolar number (0 to 27648). FC105 is a function in Simatic that can convert analog data.įC105 reads the integer value for analog input stored in PIW256 (parameter IN). In program object, in the left Panel expand library > Standard Library > TI-S7 Converting Block and select FC105 for scale the analog input. Step 1: Open Simatic Manager to PLC Programming Languageįollow Step 1 to Step 4 of the article about Simulation Analog Input and Output Programming in Simatic S7-PLCSim
Convert ab project to simatic manager how to#
Example the analog input is voltage with rang 0 – 12V, and we can scale them into variable with rang 0 – 100.įollowing step by step how to use FC105 SCALE CONVERT and FC106 UNSCALE CONVERT: For make user easier read the analog data, in simatic S7 there are function to scale analog data into parameter.