Hello! The error message you get directly points to the fact, that the S7+ driver expects 80.000 bytes of data being sent from the PLC for 10k items of size LREAL. However, the PLC only sends 14.472 bytes of data, which is simply too little for correct data processing. You really have to consider so...

Hello Frenk! In fact the S7+ protocol driver was tested with a high throughput and is also able to handle more than 100.000 addresses. When considering subscriptions and bit-packing on PLC side, you should consider the number of addresses per PLC. The number of PLC variables, that can be subscribed ...

Hello Chandra! In general the Export from TIA Portal and the browsing function in WinCC OA only show Datablocks (and variables) and tags which are declared as "Visible in HMI Engineering" and "Accessible from HMI/OPC UA". Without those flags you won't find them in the export file...

<t>Hello,<br/> <br/> 1) the S7 PLC can only hold a maximum number of variables per subscription (in your case 100 as stated by the "Max. GetRequest size") and the S7+ driver manages the distribution of "configured subscriptions" to "active subscriptions on the PLC" automatically for the user. Otherw...

Hi Snehankit,

yes indeed - this functionality is called "Online browsing" and is available since final WinCC OA V3.16. Only if you need to use alarming with your S7-1200 or 1500 PLC then you still need some TIA Portal export file.

Kind regards,
Daniel

<t>Hello Andre,<br/> <br/> in this case please send us the output of the "-report all" command on the driver and activate the "-dbg subscr" option on driver startup and send us the driver log file (WCCOAs7plus...log) after 30 seconds running, so we can help you analyse the subscriptions topic.<br/> ...

<t>Hello Andre!<br/> <br/> I try to make it more clearly: The NotEnoughMemory error comes directly from the PLC (not the WinCC OA driver) and means that you somehow try to fetch too much data in a single attempt than the PLC can handle.<br/> <br/> Please first check if you are reading some arrays la...

<t>Hello Andre!<br/> <br/> The error from your latest log screenshot is new and tells us that the configured polling access cannot be handled by the PLC due to insufficient memory. This may come from reading large STRING arrays. Please check for them and change to reading single items of the array. ...

<t>Do you get some log file error about the DPE address string that leads to the first error message? Or can you identify the causing address by activating them one by one?<br/> <br/> Generally spoken: no. the first error cannot lead to connection loss. But do you have a valid license to run more th...

<t>Hello Mr. Keupers,<br/> <br/> the first error code means some invalid internal variable address -> are you observing this error with some dedicated periphery address? Are you using the latest WinCC OA Patch? If so, can you provide us with your TIA Project or at least the export file?<br/> <br/> T...