Which register holds the clock values?

[sss94]

Hello ppl,
I'm using Ge Fanuc series 90 micro PLC which has an internal clock. What I need to do is start up a motor a particular time everyday, say 11 pm. Can anyone kindly tell me how to access the registers holding clock values. I can then use relational functions to turn on the motor.
Thx,
Ss.

 

[GMc]

sss94,

Which model 90 micro do you have? The one we have doesn't have an internal clock. Here is a link to GE support for the micro series.

http://www.geindustrial.com/cwc/gefanuc/support/ControllersIO/s90micro.htm

Gary

 

[Steve Bailey]

If the Series 90 Micro has a clock/calendar (and I'm not sure whether or not it does), you read it by executing service request code 7. That will put the clock data into a bank of registers (specified by how you set up the SVC_REQ function). You'll need to extract the hour and minute information. If I remember correctly the minutes and seconds are in one register while the hour is a register with the day of the month or something like that.