SIMATIC S7-200 SMART programing module

Dear Sir,
i need time alarm module so i can used it in programing.

I am not sure that I understand your question. All of the standard CPUs come with a real time clock.
Precision of real-time clock - 120 seconds/month
Real-time clock hold time - In general 7 days, or min. 6 days when 25 °C (Maintenance free super capacitor)

You can also get a 'Single Board' - SB BA01 - Battery module - It supports the generic CR1025 cell (battery), which can drive the clock for about 1 year.

http://w3.siemens.co.in/automation/in/en/automation-systems/industrial-automation/S7-200-SMART-PLC/Documents/S7%20200%20SMART%20PLC%20catalog.pdf

See the following for programming the real time clock.
7.2.2 Read and set real-time clock extended
http://w3.siemens.co.in/automation/in/en/automation-systems/industrial-automation/S7-200-SMART-PLC/Documents/S7-200_SMART_system_manual_V2.1.pdf

Hope this helps you out.
Regards,