Post by ndzied2 on Rounding error in simple addition ^{CODESYS Forge talk (Post)}
This is a consequence of how computers store floating point numbers. 0.1 cannot be exactly represented in a computer. This is not a CoDeSys thing. Here is a link to a converter to show you the exact value that is represented when you use a REAL data type (which is a 32 bit float). https://baseconvert.com/ieee-754-floating-point If you really need to keep track of 0.1 increments. use INT OR DINT and then add 1 each time and assume that there is one decimal place.
Last updated: 2024-05-24

Post by esave on Softmotion Axis Controll ^{CODESYS Forge talk (Post)}
Hello everybody I have two of these EtherCat CiA402 stepper driver from Leadshine: https://www.leadshine.com/product-detail/EM3E-556E.html I want to controll them. I already have implemented them in Codesys with Softmotion. I see the position, the velocity and the status word so I can read everything. See picture 1. But when I want to write something like MC_Power or MC_MoveAbsolut with the SM3_Basic library it wont work and with the MC_Reset POU it shows: "SMC_R_DRIVE_DOESNT_ANSWER". See picture 2. Can somebody help me? Thanks a lot esave
Last updated: 2024-05-24

Post by mubeta on STRUCT AT %MW1000 ^{CODESYS Forge talk (Post)}
This is normal and correct since in CoDeSys static addressing of variables uses the IEC method. A LONG tag has the size of 8 bytes, so %ML0 coincides with %MB0 ... %MB7; %ML1000 with %MB8000 ... %MB8007. (Similar reason for word and other formats). Also the reason the compiler won't let you map the structure to a %MW depends on the fact that the individual base elements are manipulated to 64 bits regardless of the smaller size. That said, it makes me strange that you cannot write a parser without making use of static memory allocation.
Last updated: 2024-08-13

Post by garrian on How to write multiple coils (Modbus FC15) ^{CODESYS Forge talk (Post)}
Thanks! As far as I can see, the client can only send words. And on the server side there are an array for each of the functions: bool for coil and discrete, word for holding and input registers. I assume I can use holding register, then use bit mapping on the words instead of coils. But I really want to use the FC15/coils.
Last updated: 2024-11-17

Post by nz-dave on Ethernet/IP Scanner Exception ^{CODESYS Forge talk (Post)}
3.5,18,30 The Weintek HMI Runs a dual core CPU.. one for the HMI and one "real time OS" for Running Codesys.
Last updated: 2024-12-28

Post by eschwellinger on Enable and Disable Project IO programmatically ^{CODESYS Forge talk (Post)}
In simulation mode there are no fieldbus updates possible - so this makes only sense with real devices.
Last updated: 2025-03-04

Post by nz-dave on Variable Length Array - Cannot mix variable and fixed length dimensions? ^{CODESYS Forge talk (Post)}
VAR CONSTANT size : INT := 10; END_VAR My_Array : ARRAY[1..SIZE , 1..5] OF REAL;
Last updated: 2025-05-26

How to allow a user to handle certificates without access to sourcecode? ^{CODESYS Forge talk (Thread)}
How to allow a user to handle certificates without access to sourcecode?
Last updated: 2024-08-07

Post by manuknecht on High Cycle Times for SoftMotion_PlanningTask when using AxisGroup ^{CODESYS Forge talk (Post)}
Hi, we did install the real-time kernel patch on the RPI and also performed the additional optimizations including isolating the cores. Changing the configuration of the planning task e.g. running it on a separate core, changing the cycle times and mode from cyclic to freewheeling did not show any improvements.
Last updated: 2024-03-14

Post by davidmic on Struct Literal ^{CODESYS Forge talk (Post)}
Hi all I want to pass a struct into a function without declaring the struct in a VAR/END_VAR. Is this possible? I think this would be called a struct literal It would look something like this someFB.write(structArgument := MyStruct#(a := 1, b := 1.2), otherArgument := TRUE); With this struct declaration TYPE MyStruct : STRUCT a : INT; b : REAL; END_STRUCT END_TYPE
Last updated: 2025-03-28

how to add module to raspberry pi ^{CODESYS Forge talk (Thread)}
how to add module to raspberry pi
Last updated: 2020-11-24

how to set custom from/to timestamp in Trend ^{CODESYS Forge talk (Thread)}
how to set custom from/to timestamp in Trend
Last updated: 2020-03-31

Unable to connect to git remotes through Codesys. ^{CODESYS Forge talk (Thread)}
Unable to connect to git remotes through Codesys.
Last updated: 2023-11-10

Codesys to Android App to Cloud Database ^{CODESYS Forge talk (Thread)}
Codesys to Android App to Cloud Database
Last updated: 2022-03-10

How to map to values in CAN BUS ^{CODESYS Forge talk (Thread)}
How to map to values in CAN BUS
Last updated: 2021-04-29

Using Codesys WebClinet to talk to Sensibo API ^{CODESYS Forge talk (Thread)}
Using Codesys WebClinet to talk to Sensibo API
Last updated: 2021-07-20

How to add a VFD to Codesys ^{CODESYS Forge talk (Thread)}
How to add a VFD to Codesys
Last updated: 2023-05-12

How to convert Function block diagram to Structured text ^{CODESYS Forge talk (Thread)}
How to convert Function block diagram to Structured text
Last updated: 2015-05-04

How to save sensor values ​​to a file ^{CODESYS Forge talk (Thread)}
How to save sensor values ​​to a file
Last updated: 2023-02-22

HMI will not connect to PLC to display visu. ^{CODESYS Forge talk (Thread)}
HMI will not connect to PLC to display visu.
Last updated: 2020-02-28

how to Connect CodeSys to many devices? ^{CODESYS Forge talk (Thread)}
how to Connect CodeSys to many devices?
Last updated: 2017-08-16

how to communicate codesys to other PLC ^{CODESYS Forge talk (Thread)}
how to communicate codesys to other PLC
Last updated: 2011-07-06

Not able to connect to Codesys Gateway on locl machine... ^{CODESYS Forge talk (Thread)}
Not able to connect to Codesys Gateway on locl machine...
Last updated: 2021-03-12

How to convert UDINT to array of bytes ? ^{CODESYS Forge talk (Thread)}
How to convert UDINT to array of bytes ?
Last updated: 2023-03-10

how to Connect CodeSys to many devices ? ^{CODESYS Forge talk (Thread)}
how to Connect CodeSys to many devices ?
Last updated: 2017-08-17

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