Rockwell-automation 1763 MicroLogix 1100 Programmable Controllers User Manual de usuario descargar pdf (Pagina 143)

141 Publication 1763-UM001D-EN-P - March 2011

Chapter

Using Real-Time Clock and Memory Modules

The MicroLogix 1100 controller has a built-in real-time clock (RTC). You can

order a memory module as an accessory.

One type of memory module is available for use with the MicroLogix 1100

controller.

Real-Time Clock Operation

Operation at Power-up and Entering a Run or

Test Mode

At power-up and when the controller enters a run or test mode, the values

(date, time and status) of the RTC are written to the RTC Function File in the

controller.

The following table indicates the accuracy of the RTC for various

temperatures.

TIP

For more information on “Real-Time Clock Function

File” and “Memory Module Information File”, refer to

the MicroLogix 1100 Programmable Controllers

Instruction Set Reference Manual, publication

1763-RM001.

Catalog Number Function Memory Size

1763-MM1 Memory Module 128 KB

RTC Accuracy

Ambient Temperature

Accuracy

(1)

These numbers are maximum worst case values over a 31-day month.

0 °C (32 °F) -13...-121 seconds/month

25 °C (77 °F) 54...-5 seconds/month

40 °C (104 °F) 29...-78 seconds/month

55 °C (131 °F) -43...-150 seconds/month

1 2 ... 138 139 140 141 142 143 144 145 146 147 148 ... 255 256

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Rockwell-automation 1763 MicroLogix 1100 Programmable Controllers User Manual de usuario Pagina 143