Of course I will do, but I'm not convinced at the moment, that node-red-contrib-ui-led has an issue. The other "quirk" I had in my flow was with node-red-contrib-ui-svg. I could solve its problem too by deleting msg.responseBuffer and msg.input with a change-node between the modbus-read node and the SVG graphics node.
Wouldn't it be better to submit an issue to node-red-contrib-modbus?
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