AB Micrologix 1100 Integer Entry

ftnguy · Aug 7, 2013

I am using the RTC to start and stop some pumps. I enter a start and stop time from an HMI into an N7 integer register and compare the value to the RTC using the limit command. My problem is that the values entered into the N7 register don't stay when power is removed from the PLC.

Is there a different way to enter integers so that they remain when the power is turned off?

Donnchadh · Aug 7, 2013

Hi

They should stay is your HMi writing down its default values on power up.
What HMi are you using

Donchadh

ftnguy · Aug 7, 2013

I'm using a C-More Micro Touch Screen from Automation Direct.

bernie_carlton · Aug 7, 2013

Can you zip and post both the PLC and the HMI programs?

ftnguy · Aug 7, 2013

Here's a zip file of both programs attached.

bce123 · Aug 7, 2013

In the C-More tag data base you can select a tag to be Retentive. However in the C-more micro version I dont see that option. one work around would be to use another interger in your plc to store the wind set pt. and create a load setpoint button wich would write to a bit in the plc. use this bit preceeding a move to move the integer in the c-more database to the one in the plc

bernie_carlton · Aug 8, 2013

Does the entire 'N7' table change to zero after a power cycle? If so I think you have a defective 1100.

AB Micrologix 1100 Integer Entry

ftnguy

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