On the T1 the switches are usually independent reed switches, 2 for each position, rather than the reed switches in the encoder type enclosure.
If you have the hard copy of the ladder with the I/O H#'s. you can look at the switch closure status on the Diagnostic screen by plugging in the H address, usually if you enter 0 address you will get the first 4 address registers that cover the reed switches.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.