Hi. when i started adding MQTT to my system i first did it in LAD to make sure it worked, which it did. So now i wanted to convert it to SCL but now im getting:"Error assigning local data in ob 31 - processing will continue (no ob processing)" when i try and run my code. Ive attached images of my working LAD, and how the datablock works, when converted it into SCL this is my test code:

its placed inside of a Cyclicinterrupt with a 10000 cycle time

AutoGen_8454093

Hi. when i started adding MQTT to my system i first did it in LAD to make sure it worked, which it did. So now i wanted to convert it to SCL but now im getting:"Error assigning local data in ob 31 - processing will continue (no ob processing)" when i try and run my code. Ive attached images of my working LAD, and how the datablock works, when converted it into SCL this is my test code:

its placed inside of a Cyclicinterrupt with a 10000 cycle time

IF #Initial_Call THEN

"Data_block_1".control.Enable := TRUE; // Start the MQTT client

"Data_block_1".control.Subscribe := TRUE; // Subscribe to the topic

END_IF;

"LMQTT_Client_DB"(enable := "Data_block_1".control.Enable,

publish := "Data_block_1".control.Publish,

subscribe := "Data_block_1".control.Subscribe,

unsubscribe := "Data_block_1".control.Unsubscribe,

qos := "Data_block_1".QOS,

retain := "Data_block_1".retain,

publishMsgLen := "Data_block_1".Send_msg_lenght,

willMsgLen := "Data_block_1".wiil_lenght,

timeOut := T#10s,

valid => "Data_block_1".Feedback.Valid,

done => "Data_block_1".Feedback.Done,

busy => "Data_block_1".Feedback.Busy,

error => "Data_block_1".Feedback.Error,

status => "Data_block_1".Feedback.Status,

diagnostics => "Data_block_1".Feedback.Diagnostics,

receivedMsgStatus => "Data_block_1".Received_Msg_status,

receivedMsgDataLen => "Data_block_1".Received_Mes_lenght,

connParam := "Data_block_1".ConnectionParam,

clientIdentifier := "Data_block_1".clientID,

username := "Data_block_1".username,

password := "Data_block_1".password,

willtopic := "Data_block_1".wiil_topic,

willMsgPayload := "Data_block_1".wiill_message,

mqttTopic := "Data_block_1"."Current Topic",

publishMsgPayload := "Data_block_1".Message_To_Send,

receivedTopic := "Data_block_1".Received_Topic,

receivedMsgPayload := "Data_block_1".Received_Message);

 Bump

Hello

Check this application example perhaps there are some useful information:

https://support.industry.siemens.com/cs/de/en/view/109748872

bye Murof