Hi! :)For everyone who needs control relay on serial port there is a usefull programm:
Relay Timer v1.0
Relay Timer is a powerful tool for NCD ProXR relay controller boards. It supports up to 16 relay boards. Each board supports 16 relays. The max relay number is 256. Each relay can be programmed separately with multiple timers.
It's very easy to control the relays automatically or manually. As the specialized software that intends to control the peripheral devices, the status of all relays can be shown and operated at the same time.
It can detect all COM ports automatically regardless of whether they are real COM ports on motherboard or on supplementary in/output boards, or virtual COM ports created by special drivers.
The software is developed with latest technology of the windows and it supports 64 bits computer platform as well as latest vista operating system. It can control the relays with very precise timer, while consuming the processor's resource at very low level. It is robust, real-time and easy to use.
p.s. I don't testing that prog but maybe been interesting(thnx to all involved)
With best wishies...