ok im creating a view studio application to run on a pc that will connect to a line at work and display data for each machine on the line on one 42 tv that hangs at the front of the line. im implementing a maintenance call button on each machine so when pressed from the machine HMI it will display a message on the main HMI for example "Maintenance TO OP190A" My question is what would be the best way to set this up without creating a tag in each plc and addressing it directly in the main HMI program to its own message. I would like to just send a string from each plc to the main HMI when the button is pressed. Could i use a msg instruction in each plc and just point them all at the pc that will run this application or am i going to have to make a shortcut for each plc in the communications configure section of view studio? There are about 30 PLC's i need to connect is why im trying to avoid this. Thanks for your help