An I/O server is an application that communicates with and manages input and output devices such as programmable logic controllers (PLCs), remote input/output devices, remote Shared Variable Engines, and data acquisition (DAQ) plug-in devices. These I/O servers read selected input items and write to the selected output items on demand.

Shortcut Menu

Right-click an I/O server on the system tree to display the following options.

• Watch List —Creates a new Watch List view that contains the single variable or multiple variables contained within the selected system or process.
• Probe —Displays the I/O Server Probe view for the selected system.
• Edit I/O Server —Configures the selected I/O server.
• Remove I/O Server —Removes the selected I/O server.