ORSO2001

Hi Gabriel if i well remember Unilogic doesn't has this kind of FB for the DTI...however I think that an own implementation of this will be not so hard...how many rows in the table?

Hi rockber in the Toolbox under the PID FB group you will find "Reset PID autotune"; at this FB you have to pass your PID_Config struct....so the bit wil be reset until the new autotune will be complete (properly).

hi i think that the "problem" is that you select the input chanel of the URA-0800T analog reader module...this can has only UITN16 range and not negative value...linearization LFB is needed to conver the UINT16 range in the INT16 range...for example 4 mA (positive value) input means -100 (negative value) and 20 mA (always positive) means +23 (positive)...hope that is correct and clear.

hi Mac9010 for what I saw from your programa all seems ok...maybe, as already suggested, the battery is low and the retained memory is not save...is the "time date" ok at every reboot?

hi at the moment i can't write something new...maybe later...for the moment take a look at the following discussion that I have had in thi sforum: LINK

hi linnemann I think that this happens because also the "function in" variables are consider as "local" so are inizialized at every loop of the program...so the -|P|- will be as a normal -| |- . if you want/need just a "one shot" command you have to reset the used variable at the end of what you need to do. consider that a single variable is passed by value...so you have also use a "function out" to reset it...otherwise array and struct are passed as reference...so what you do with the relative "function in" variable will have a direct effect to the global variables. hope that is clear but mostly that is right.

Good afternoon Saragani from my side this is really appreciated! thanks

Dears For the first time I am using the UIS-WCB2 module (twice in this project) and I was managing the relative I/O status for the alarms...I took a look at the online manual and I notice that is not exactly what I have in the I/O informations in the Unilogic software...see attached pictures...so my questions are: in the manual i saw a "generic" input and output status as two arrays of 4 UINT8 each one but in the real i have the status of analog input (2 units), temperatere input (2 units), analog output (2 units)...can I consider the same "exception value" for both types of inputs (analog and temperature)? the IO-Status is referred at the whole module...are others parameters that I have to consider to detect some malfunction...like internal params or internal info? other that is not included in the manual? thanks

hi alls, i am using the 1.33.236 and I am having a problem with the ladder function UPDATE APPLICATION or better...if I use a String element it works if I use a constant expression it doesn't...see the attached pictures...use the same, for my eyes, address but one works other not (error -3)...what I am wrong?

Hi Alls, what are the difference between thwe 1.33.200 and 1.33.236? ...o what was fixed/improved? sorry but from the change log document I don't understand it. thanks

Hi Flex, maybe (or for sure) I misunderstood what crash888 said...i though that crash888 was just trying to put the PC and the PLC online (without download the project)...however I did a check and the retain variable take the last value that these has after every reboot and also after a "download" of the project (same project)...just if you select "reset retain variables" these will be reset at the initial value...so...what I am wrong or what I am not understanding about the issue/question (seriously)?

theoretically the "initial value" is checked just for the really first time that the program run...others reboot the retain has to save the last value that it took before the power off....

i tried to calculate tha CRC of your data 01 03 08 29 00 0A and I have had as reult 65 16...so exactly what the external sensor is expecting...from where and using what did you record the 16 65?

hi curtharrington1 I don't know if the others PLC brands let you dinamically configure the hardware installed on the system...but honestly I think not. i have had the same "problem" that you have in one of my project...at the time I just set up the "bigger/complete" installation of the I/O modules and added in the project some BIT to enable the checks of the high or low status of the I/O and also to enable or not the alarm report about the module (my own alarm manager)...this works but I don't know if this is a real good practice...at the moment are some years that works without problem...

hi Raul, take a look at this link: https://www.unitronicsplc.com/Download/SoftwareHelp/UniLogic_Knowledgebase/Ladder/Ladder_Elements/LF_Math_Elements/LF_Linearize.htm

hi Paul, you can download the examples projects from the same page where you download the software...those projects will help you a lot to understand how the unilogic software unilogic modules works

i think that you can use a DTI to define the coupling "output : group" and also include the status o each outputs; so you can read/write (row by row or passing to an array) the status of some contiguos outputs, or check if the position is in a specific group etc....at the end pass the status at the physical outputs

hi steliosliv, what happens if in your UDFB you put a "direct" contact ...-| |-...instead of the "positive" contact...-|P|-...? edit: I just see now that you use the "frequency." variable and not an "user" variable that you can reset...

hi steliosliv, i will try to anser at your questions...i hope that i will not write wrong informations: 1) no...the UNILOGIC don't manage the UDFB as an object...so doesn't expose the Inputs and Outputs as attributes. 2) no...the Input always needs a variable...could be local or global but doesn't accept the direct "power flow" of contacts. 3) no...by what is wrote at point 1...but obviously you can use the same function many times. 4) you are right...no local timer is managed by the UDFB...you have to use a different strategy...use the "millis counter"...in other thread, in this forum, I already post an example how to use millis. 5) Structs and Arrays are always passed by reference...so also if assigned as Input variable (left side of the UDFB) you can modify the value of their members inside the UDFB...so an Output of this Struct or Array is not needed.

hi curtharrington1, in the UDFB arrays and struct are passed as reference...so, also if on the left side, the singles variables of these will be modified if inside the UDFB you will manage it.

hi thefunkybuddha, i don't know what sernsor are you using...I am supposing that in someway (on demand) you are able to get info from these sensors...then couple these info with some global tags (or struct...maybe) and couple these tags/struct with the relative HMI elements (text, number...)...all is done...but seems too simple...what sensors are you using?

Hi didi, i think that you are talking about a feeding system that has to works in FIFO mode...right? I suggest to use a DTI where you insert the receivers that need to suction and a counter, that you will increase/decrease, about the DTI position to insert or remove. then, if necessary, move the receiver of row 0 in the "working flow".

hi Vesp123 what I meant is that the unistream share a system variable called "General.Milliseconds Counter" that is an UINT32 variable that start to count the milliseconds from the PLC power ON. so you can save, when you want, its value to check how much time is gone...like a timer...obviously, or better I think that is obviously, this procedure need a "finite state machine" logic...so some other variable/s in your struct will define which steps are you performing for each single struct...attached an example about what i meant. MILLIS.ulpr

i forgot to write that if you need a multiple timer you can use the "millis" control...instead of a TON or TOFF or other timers. then in your struct you will have an "startMillis" variable that will be updated when wil be needed...and with this you can check the timing of your actions.

hi Vesp123, if I well remember the "local tag" can't be |P| or |N|...because these are create and destroyed every cycle..then they can't remember the previously state...then...I have many projects that has to manage many devices in the same way but with different timming...then, usually, I create a struct that contain all the information about the specific device and I pass this struct at the UDFB...then I know if the specific device was "busy" or "free" or "running" or other else every new cycle.