Some temporary circumstances that occur during up or down counting are stored in switches. The number of these switches (one or two) depends on the operating mode.

Switch outputs can be tested by the software and in some cases sent to physical outputs (reflex outputs).

Switches have automatic adjustable setting to 1 conditions (SET) and resetting to zero conditions (RESET) and direct setting to 1 or 0 conditions by the software. The latter always have the highest priority. Priority rules are set out in the sectionsSwitches in up/down counting mode (TSX CTY 2A, 4A, 2C) and Switches in counting mode (TSX CTY2A/4A).

This section describes SET and RESET conditions according to the modules and their operating modes.

Adjusting switch conditions is described in the section Adjustment of TSX CTY2A, TSX CTY4A and TSX CTY2C Modules.