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About Robert_
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05-12-2020
04-16-2024
Robert_
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03-28-2023
10:33 PM
This workaround will avoid the task being blocked. However, I am not able to get the IP address through the NBS.ResolveHostname. My plan was something like this (simplified code example): Declaration VAR hostname: STRING := 'www.codesys.com'; url: STRING; asyncProperty: NBS.AsyncProperty := (anAppName := 'Application', tgTaskGroup := 'IEC-Tasks', tnTaskName := 'bgTask', udiTaskInterval := 20000 , usiTaskPrio := 30); ip: NBS.IIPAddress; resolve: NBS.ResolveHostname := (itfAsyncProperty := asyncProperty, udiTimeout := 1000000); webcl: WEB_CLIENT.WebClient; END_VAR Implementation resolve(itfIPAddress := ip, sHostname := hostname); IF resolve.xDone THEN url := CONCAT('https://', ip.CompressedIP); resolve.xExecute := FALSE; webcl.xExecute := TRUE; END_IF webcl(sURL := url, eRequestType := WEB_CLIENT.REQUEST_TYPE.GET); The ip.CompressedIP (in the url assignment line) gives me an exception. I do not understand how to get the IP address from the resolve FB.
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03-07-2023
12:55 AM
I am using the WebClient FB of the IIoT library. When using urls with the domain name instead of the IP address, the function block contacts the DNS (Domain Name Server) to resolve the IP address. However, if the DNS is not reachable, the WebClient functionblock gets blocked for a certain amount of time. On my ctrlX node for 10s, on another ctrlX I have seen 20s. The task that is running the functionblock stops running while the functionblock is blocked. The issue can be reproduced by: Use a 1:1 connection between the engineering PC and the ctrlX XF10 (no other connections on the ctrlX) Manually configure a DNS server, the IP adress should not be the same as the ctrlX or the engineering PC Send out an request through the WebClient function block, e.g. https://www.boschrexroth.com/ The function block gets stuck for 10 and then generates an error and shows RESOLVE_HOSTNAME_FAILED. For the exampe below the task shows a max cycle time of 10001583us ~= 10s There are two issues here: The timeout of the request is not determined by the timeout of the functionblock (above the timout is set to 3s, the functionblock was blocked for 10s) The functionblock stops its task from running, stopping all logic in the task from executing
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From the answers I see the need to better explain my situation. I want to use the digital IO on my drives through Blockly. In IO engineering, when I add my digital IOs to my PDO's, I need to add them as an UDINT / UINT (depending on the size of the parameter to map). E.g. For my IndraDrive, the digital inputs are on P-0-0303 and my digital output(s) are on P-0-0304: Once I add my IO in this way, in the datalayer I have the following structure: In the example above my digital inputs 1 and 8 are active, so the digital IO image is 0b1000 0001 (=129 in decimal). I am using the IDE app version 1.18, and I now want to pin my digital inputs: (In my project I go to > Project settings > Configure pins > Looking glass > Import from target) I can select the digital io image (which is P-0-0303), however once imported, the pin is seen as a single input. If any of the digital inputs is high, the pin is high. I want to get access to all digital inputs from my IndraDrive. I looked around, but I cannot see a way to let the pins functions get access to the individual digital inputs. I have a similar situation with my Elmo drive where I mapped the digital inputs through CoE parameter 1A1C (UDINT) and my digital outputs through CoE parameter 161D (UDINT).
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I am using the Visual Coding in the IDE app to program a motion sequence. I want to read a digital input in my Blocky program. My digital inputs are coming in through EtherCAT, and my EtherCAT IO configuration sents all digital inputs to a single uint32 (I cannot change this, but to me this seems like a very common way digital IO is managed through EtherCAT). So in my realtime data I have access to a digital input register, and each bit is an input. Now I want to read one single input, bit 16, in the register, and based on this value I will go to the next step in my sequence. I was hoping to use the pins extension, but when I map my input register on the pins, I can only read this as a single input. How can (easily) I manage my digital inputs with Blocky? (I also have digital outputs through the same mechanism, and also there I want to be able to set individual outputs)
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