Determine Scan Time in ControlLogix

How to Determine Scan Time in ControlLogix There are several ways to Determine Scan Time in ControlLogix. One way is to simply look in RSLogix / Studio 5000. The properties of the task will tell us the max scan time, and last scan time. Another way is with the GSV Read More »

ControlLogix Scan Time

GSV with a UDT 3

Introduction to GSV with a UDT Today we’ll discuss how to structure a tag to hold the system clock using the command GSV with a UDT (User Defined Data Type). We use the GSV (Get System Value) command to pull data from the system, and copy that data to a Read More »


ControlLogix GSV Command (Battery Low)

Introduction to ControlLogix GSV Command (Battery Low) In this post, we will discuss how to use the ControlLogix GSV Command to find the Battery Low bit in the system.   Older processors, such as the L6x and earlier used a battery in the default configuration.  A battery option is also available on Read More »

Battery Not Low

ControlLogix GSV Command (WallClockTime) 11

Intdoduction to ControlLogix GSV Command (WallClockTime) In this post, we will discuss the ControlLogix GSV Command (WallClockTime).  Earlier processors, such as the SLC-500 and PLC-5 had a data file dedicated to system status (S2).   In the S2 file, you could find the data table addresses of system information such as the Read More »

Set Date Time