Switches in counting mode (TSX CTY2A/4A)

General

In counting mode alone, TSX CTY2A/4A modules have two switch settings:

switch 0 where automatic SET and RESET conditions are predefined,
switch 1 where automatic SET and RESET conditions can be adjusted using 5 combinations.

Inputs for switch 0

The following figure shows inputs for switch 0 in counting mode alone. You will also see manual inputs for setting to 0 or 1.

Inputs for switch 1

The following figure shows inputs for switch 1 in counting mode alone, as well as direct inputs for setting to 0 or to 1.

NOTE: switches 0 and 1 have the same basic SET and RESET conditions. If these happen at the same time the global RESET combination takes priority over the SET combination.

Switch setting conditions and priorities

The following tables shows the conditions for switches 0 and 1 with their related priorities.

Priority	Switch 0	Switch 1
Greater priority Lesser priority	Manual setting to 0 Manual setting to 1 RESET: Reset to zero (direct or done). SET: current value greater than or equal to the setpoint value	Manual setting to 0 Manual setting to 1 RESET SET Enabling event Reset event Set point crossing Threshold 1 crossing Threshold 0 crossing

Notes

Adjustable conditions (events, crossing thresholds or set points) are the same for switch 1 SET and RESET conditions.
The RESET input takes priority over the SET input.

Operating example (switch 0)

The following time diagram shows how switch 0 operates.

Operating example (switch 1)

The following time diagram shows how switch 1 operates, with the adjustments shown below:

If	Then: final state
Enabling event	-
Reset event	R
Set point crossing	-
Threshold 1 crossing	R
Threshold 0 crossing	S

Time diagram showing how switch works: