Datalogging with Micrologix 1400?

Hi,

I need to do some simple datalogging with a Micrologix 1400.

When someone logs in thru the HMI and starts a system I need to log the username and the system number. There would be 10 or so starts a day.

What is the best way to do this?

Probably in the HMI. What make/model HMI are you using.

I have a PV 700+ touchscreen.

Are you suggesting storing all of the data on the PLC then?

No, I would use the PV+ to log the changes. I would have to defer to folks more familiar with the PV+ for exact details.

Today's theme on the Forum is different ways to understand the phrase "data log".

The challenge is that you have one thing that's happening in the PV+ (the user login) and another that's really happening in the MicroLogix. My guess is that "starting a system" involves a pushbutton, but it might not.

I would take a jump to the end and ask what format you want the "data log" to take. Do you want some sort of text file ? An entry in a database ? A list on a screen ?

What you want to do with the data is going to determine how and where you store it.

Starting a system is indeed pressing a button.

I just need the customer to see the the date/time, system #, and username.

I expect this to happen 10 times a day or 3500 times a year.

FNC said:

Starting a system is indeed pressing a button.

I just need the customer to see the the date/time, system #, and username.

I expect this to happen 10 times a day or 3500 times a year.

Click to expand...

A real hardwired push button or a button on the PV+?

It would be a button on the PV+.