Yearly Archives: 2020


FactoryTalk Audit Trail Error 2

Introduction to FactoryTalk Audit Trail Error In summary, I received a FactoryTalk Audit Trail Error when creating a runtime. I’m using FactoryTalk Vew ME Version 11. I’m creating the runtime for an older Panelview or FactoryTalk View ME Station. Specifically, the error was: See Rockwell Automation Knowledgebase Answer ID 1041447.ERROR: Read More »

Panelview

Numeric Input for a Timer

Introduction to Numeric Input for a Timer In this section, we’ll discuss how to set up a Numeric Input for a Timer in ControlLogix. I’ll use FactoryTalk View ME. As you know, the time base for timers in ControlLogix is in Milliseconds. This is not very intuitive for an operator. Read More »

Expressions

Delaying an Output On and Off

Introduction to Delaying an Output On and Off Today, we’ll discuss delaying an output on and off. In this case, I have a heater in the office, and a blower (fan). When the heater energizes, the blower (fan) will start after 2 minutes. This allows the heater time to warm Read More »

ton and toff

Installing RSLogix 5000 v16.04

Problem Installing RSLogix 5000 v16.04 Installing RSLogix 5000 v16.04 is necessary to run the latest firmware for the 1756-L55 processor under windows XP. This version allows you to use Add-On Instructions for the L55 processor. If you are running Windows 7 or Windows 10, consider installing version 16.05. Several of Read More »

Install Options

ControlLogix Enhanced Select (ESEL)

Introduction to the ControlLogix Enhanced Select (ESEL) Instruction All things considered, the ControlLogix Enhanced Select (ESEL) simply selects between tags to choose the best suited value to use in logic. For example, if you have two process variables for a PID, you might select the lowest, highest, or average of Read More »

ESEL

How to use RLIM

Introduction to How to use RLIM The ControlLogix Rate Limiter (RLIM) slows the rate of change coming from a tag. Specifically, we usually use this for a set point. When an operator changes the setpoint on a PID instruction, there is an immediate change in the error. This change in Read More »

RLIM Logic

ControlLogix Moving Average (MAVE)

ControlLogix Moving Average (MAVE) The ControlLogix Moving Average (MAVE) allows you to smooth out a noisy process variable. In other words, if your signal is bouncing around, the MAVE instruction will smooth it out. For example, let’s consider a flow rate. Because of disturbances in the flow of a liquid, Read More »

mave config

ControlLogix Bit Field Distributor

Introduction to the ControlLogix Bit Field Distributor (BTD) The ControlLogix Bit Field Distributor (BTD) Allows us to map bits from one word to another. Particularly, when converting 32 bit data to 16 bit data, the BTD makes this very easy. In this case, we have a 32 bit input module. Read More »

BTD

PLC-2 On Delay Timer

Introduction to the PLC-2 On Delay Timer. Despite being obsolete and out of date, I still love to program the PLC-2. In this post, we’ll discuss the PLC-2 On Delay Timer. We use the TON instruction to delay the DN bit from energizing. You will see this on conveyors, so Read More »

PLC-2 TON

PLC-5 to ControlLogix Conversion 3

Introduction to PLC-5 to ControlLogix Conversion RSLogix / Studio 5000 has a built in utility for PLC-5 to ControlLogix Conversion. Likewise, we can use the same procedure for converting an SLC-500 project. Because the PLC-5 is now obsolete, we will convert a PLC-5 project to use in a ControlLogix system. Read More »

PLC-5 Conversion