Post by mp9876 on Problem using MeasureFrequence FB ^{CODESYS Forge talk (Post)}
Hi everyone, new at Codesys and PLC programming in general. I am using Codesys Win V3.5 SP20 I would like to measure an encoder's frequency output (obtaining that pulse train from Factory IO) and intended to use the MeasureFrequence FB (Intern/CAA/Utilities/CAA Mathematics/3.5.19.0). As mentioned in the title what I need to measure is low frequency, such as lower than 40hz (a cycle every 25mS) or so; I could even go lower frequency if required as this is for test purposes) therefore I am not expecting problem measuring a low frequency with that FB The library in question appears to be installed as I can retrieve it from the Library Repository. I can also see it from the Device's Library Manager. Problem arises when I am trying to instantiate this particular FB. I go like this: VAR MeasF:MeasureFrequence; END_VAR Please note that as soon as I start typing the "MeasureFrequence", the MeasureFrequence comes out as a viable option in auto-typing; seems to indicate that the FB is recognized somehow. But there is no way I can compile this as it comes back with the following: C0046: Identifier 'MeasureFrequence' not defined. Tried to rename that to ABC instead of MeasF; same issue. Possibly that the library is not properly installed ? Placeholder ? I would greatly appreciate a bit of guidance if possible. Thank you and regards, Mike
Last updated: 2024-06-24

Post by snhatton on Can't open online view of FB instance from code editor, only from Device/POU windows ^{CODESYS Forge talk (Post)}
Good morning, Yes, this is a known bug that has been reported. For now, the only workaround is to open the function block instances from the device tree. Regards, -Shawn
Last updated: 2023-11-08

Post by runtimevictor on virtual plc vPLC configure nics ^{CODESYS Forge talk (Post)}
Hello, When I add 2 nics in vPLC this happens to me..., why is it? If I just put one of the two NICs, the vPLC runtime instance starts running correctly...
Last updated: 2025-02-02

Post by mbart on VAR_INFO from inside of a FB to get info on the instance. ^{CODESYS Forge talk (Post)}
I experienced the same problem: using __VARINFO is working only in PRG context, while it crashes if used inside Function Blocks. I would really appreciate if they would fix this issue
Last updated: 2025-12-04

Post by scrollman on Attribute FB for comment ^{CODESYS Forge talk (Post)}
Hello, I can use {attribute 'reflection'} FUNCTION_BLOCK POU VAR {attribute 'instance-path'} {attribute 'noinit'} str: STRING; END_VAR to get name of FB. How I can get the comment this FB, in the same way in the FB? Thank you for your time!
Last updated: 1 hour ago

Using a method called from opcua fill an specific array position ^{CODESYS Forge talk (Thread)}
Using a method called from opcua fill an specific array position
Last updated: 2022-02-18

Establishing communication between a Raspberry Pi 4 and an Arduino UNO R3 using I²C. ^{CODESYS Forge talk (Thread)}
Establishing communication between a Raspberry Pi 4 and an Arduino UNO R3 using I²C.
Last updated: 2023-12-03

UDB Block in Codesys V2.3 implementieren um Werte an bestimmte IP-Adresse zu senden ^{CODESYS Forge talk (Thread)}
UDB Block in Codesys V2.3 implementieren um Werte an bestimmte IP-Adresse zu senden
Last updated: 2024-07-19

setting up Raspberry pi as an opc ua Server with UaExpert as Client ^{CODESYS Forge talk (Thread)}
setting up Raspberry pi as an opc ua Server with UaExpert as Client
Last updated: 2024-09-11

Setting up Raspberry pi as an Opc ua Server with UaExpert as Client ^{CODESYS Forge talk (Thread)}
Setting up Raspberry pi as an Opc ua Server with UaExpert as Client
Last updated: 2024-09-11

SEGV when using an Ethernet_IP_Scanner/Profinet-Master coming from the ETHTOOL syscall ^{CODESYS Forge talk (Thread)}
SEGV when using an Ethernet_IP_Scanner/Profinet-Master coming from the ETHTOOL syscall
Last updated: 2023-08-16

Can any PC with an Ethernet adapter be used as PN_Controller with Codesys? ^{CODESYS Forge talk (Thread)}
Can any PC with an Ethernet adapter be used as PN_Controller with Codesys?
Last updated: 2018-10-11

Rpi Runtime stops after about 16 hours with an Exception with CommCycleHook ^{CODESYS Forge talk (Thread)}
Rpi Runtime stops after about 16 hours with an Exception with CommCycleHook
Last updated: 2023-04-24

How do I pass a array throught a function and return an array - Pointers ^{CODESYS Forge talk (Thread)}
How do I pass a array throught a function and return an array - Pointers
Last updated: 2018-04-16

K-Bus Klemme an Ethercat Slave einbinden. Gerät konnte nicht hinzugefügt werden. ^{CODESYS Forge talk (Thread)}
K-Bus Klemme an Ethercat Slave einbinden. Gerät konnte nicht hinzugefügt werden.
Last updated: 2021-11-28

exporting or copying the COE online data from an ethercat slave device ^{CODESYS Forge talk (Thread)}
exporting or copying the COE online data from an ethercat slave device
Last updated: 2019-10-30

an item with the same key has already been added. Error ^{CODESYS Forge talk (Thread)}
an item with the same key has already been added. Error
Last updated: 2014-06-16

Dataserver - an item with the same key has already been adde ^{CODESYS Forge talk (Thread)}
Dataserver - an item with the same key has already been adde
Last updated: 2015-10-20

Extending a library function in an application and getting Interface conversion errors ^{CODESYS Forge talk (Thread)}
Extending a library function in an application and getting Interface conversion errors
Last updated: 2020-06-03

Table Control on an array using a constant for its size. ^{CODESYS Forge talk (Thread)}
Table Control on an array using a constant for its size.
Last updated: 2016-01-08

I present an error: program too large for the controller ^{CODESYS Forge talk (Thread)}
I present an error: program too large for the controller
Last updated: 2013-06-28

Error 'sysfile23, 3.5.13.0 (system)' and 'syssocket23, 3.5.13.0 (system)' using Oscat libraries on an IFM CR1203 HMI ^{CODESYS Forge talk (Thread)}
Error 'sysfile23, 3.5.13.0 (system)' and 'syssocket23, 3.5.13.0 (system)' using Oscat libraries on an IFM CR1203 HMI
Last updated: 2022-10-14

There is an error When calling IecTaskGetInfo3 with the RTS_IEC_HANDLE from SchedGetTaskHandleByName function ^{CODESYS Forge talk (Thread)}
There is an error When calling IecTaskGetInfo3 with the RTS_IEC_HANDLE from SchedGetTaskHandleByName function
Last updated: 2017-09-11

How can i read data from a file into an array? ^{CODESYS Forge talk (Thread)}
How can i read data from a file into an array?
Last updated: 2021-08-09

The element might be in an unsupported area and therefore cannot be edited. (e!Cockpit) ^{CODESYS Forge talk (Thread)}
The element might be in an unsupported area and therefore cannot be edited. (e!Cockpit)
Last updated: 2023-01-27

Sort by relevance or date