ControlLogix analog input module - Fall 09

ControlLogix analog input module - Fall 09 - MFET 474,...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: MFET 474, Manufacturing Integration II 8/24/2009 ControlLogix Analog Inputs 1 MFET 474 MFET 474 Fall 2009 Working with ControlLogix Analog Inputs T.E. Kostek Topics ¡ Introduction ¡ 1756-IF16 specifications ¡ Acquiring data ¡ 1756-IF16 features 2 ¡ Wiring sensors to the 1756-IF16 MFET 474, Manufacturing Integration II 8/24/2009 ControlLogix Analog Inputs 2 Introduction Introduction ¡ All ControlLogix I/O modules must be configured ¡ I/O modules are “placed” in the I/O Configuration folder before they can be used. ¡ Block transfer instructions are NOT used 4 ¡ Block transfer instructions are NOT used! ¡ This presentation will focus on the 1756-IF16 analog input module MFET 474, Manufacturing Integration II 8/24/2009 ControlLogix Analog Inputs 3 Introduction ¡ Download the 1756-IF16’s users manual from Allen-Bradley’s web site and place it your lab group folder. ¡ Publication 1756-UM009B-EN-P-June 2003 5 1756-IF16 Specifications MFET 474, Manufacturing Integration II 8/24/2009 ControlLogix Analog Inputs 4 1756-IF16 Specifications ¡ The 1756-IF16 supports the following types of analog inputs: ¡ Single-ended or differential ¡ 16 single-ended inputs, or ¡ 8 differential inputs, or 7 ¡ 4 high-speed differential inputs ¡ Voltage or current 1756-IF16 Specifications ¡ The 1756-IF16 supports the following input ¡ The 1756 IF16 supports the following input ranges: ¡ ±10.25 volts ¡ Generally ± 10v ¡ 0 to 5.125 volts ¡ Generally 0-5v 8 ¡ 0 to 10.25 volts ¡ Generally 0-10v ¡ 0 to 20.5 ma ¡ Generally 0-20ma or 4-to-20ma MFET 474, Manufacturing Integration II 8/24/2009 ControlLogix Analog Inputs 5 Acquiring Data Acquiring Data In traditional systems (e g PLC 5s) the ¡ In traditional systems (e.g., PLC-5s) the controller polls the analog input module for data. ¡ Recall PLC-5s use block transfer read (BTR) instructions to read data from an analog input module. 10 ¡ This is essentially a polling operation. MFET 474, Manufacturing Integration II 8/24/2009 ControlLogix Analog Inputs 6 Acquiring Data ControlLogix uses the ¡ ControlLogix uses the producer/consumer model ¡ The analog input module is a producer (the controller consumes the data produced by the analog input module) 11 ¡ The 1756-IF16 analog input module periodically multicasts (produces) its data to the controller. 11 Acquiring Data ¡ When does the 1756-IF16 analog input module multicast its data? ¡ It depends on how the module is configured! ¡ It also depends if you are working with local I/O or remote I/O 12 ¡ We need to understand the following terms: ¡ RTS – R eal T ime S ample ¡ RPI – R equested P acket I nterval MFET 474, Manufacturing Integration II 8/24/2009 ControlLogix Analog Inputs 7 Acquiring Data – RTS During the real time sample (RTS ¡ During the real time sample (RTS) period the following occurs: ¡ Scan all of the analog inputs and store the data in the memory of the analog input module ¡ Multicast (produce) the updated channel data...
View Full Document

This note was uploaded on 02/29/2012 for the course MFET 474 taught by Professor Kostek,t during the Fall '08 term at Purdue.

Page1 / 33

ControlLogix analog input module - Fall 09 - MFET 474,...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online