I've added the following to the code:
var buf: string;
buf:=ser.RecvPacket(6000);
showmessage(buf);
so it now reads:
ser.Connect('COM1');
ser.Config(9600,8,'N',0,false,false);
ser.SendString('Invoice: The Galley Restaurant'+#13+#10);
buf:=ser.RecvPacket(6000);
showmessage(buf);
ser.SendString('Tel Number: 041-461000'+#13+#10);
buf:=ser.RecvPacket(6000);
showmessage(buf);
The First String prints out correctly, but then I get an error
message: 'Communication error 9997: Timeout during operation'
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