How to Assign and how to use Retentive Timer in Siemens TIA portaL.

Software used : Siemens TIA portal V14 SP1.

PLC CPU I used: 1200 (1214 dc/dc/dc).

Step 1: Open your existing program or open new program in TIA portal V14 SP1.

Step 2: 

Step 3

Step 4: To reset the retnetive timer