Hello,
You can use the CSV node
Demo Flow:
[{"id":"b2dac34a6d1fcd85","type":"template","z":"54efb553244c241f","name":"data","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"L1S3;52.61563261441822;4.0658098986827715\nL1S1;52.44174022895096;6.384215548118491","output":"str","x":300,"y":1200,"wires":[["d76adacd90c1773f"]]},{"id":"df069b0fe53e1771","type":"inject","z":"54efb553244c241f","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":160,"y":1200,"wires":[["b2dac34a6d1fcd85"]]},{"id":"d76adacd90c1773f","type":"csv","z":"54efb553244c241f","name":"","sep":";","hdrin":"","hdrout":"none","multi":"mult","ret":"\\n","temp":"A, B, C","skip":"0","strings":true,"include_empty_strings":"","include_null_values":"","x":420,"y":1200,"wires":[["2694dcd575e2d741"]]},{"id":"2694dcd575e2d741","type":"debug","z":"54efb553244c241f","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":590,"y":1200,"wires":[]}]