Another time issue

[Carol 0]

Hi there, I've a question about the clock of a CJ1M. Some time ago I downloaded Sleepy Wombats FB to extract date and time, thanks for that!! (I even heard someone calling it "the wombat code") I've used it in a program where on specific times a fan should work. Because of the specificy I want to check wether to clock is running or not. So I want to ask if there's a sort of control-word for checking the clock. What is the best way to achieve this? Carol

[Guest anonymous]

Hello Carol, The clock is always running in a CJ1 PLC. It cannot be stopped. If you want to be sure, A351 (bits 0 to 7) contain the clock 'seconds' value, so you could check that this value is changing.