Choose the required product form first
Without the physical-touchscreen option, a DI, DO, AI or AO requirement greater than zero selects DDC products. With that option enabled, selection uses touchscreen products and applies every specified I/O count to them. It does not treat a touchscreen and I/O as mutually exclusive requirements.
Physical channels are separate from communication points
Page 2 of the DDC1002-8200 document lists 8 DI, 2 DO, 0 AI and 0 AO. Communication-point capacity is a data-processing limit, not the same number of wiring terminals. The I4-1001-0200 touchscreen document confirms two DO channels. Check each model’s document for any other required I/O.
Counts mean at least the selected quantity; an empty value or zero leaves the condition unrestricted. Undocumented channels are neither assumed to be zero nor treated as a match. An HMI model prefix or browser-based visualization does not establish that a device has a physical screen.
