Chapter 1 - Introduction
echochange - How to... 5
1 Introduction
This document provides step by step instructions on how to establish data exchange
between a Siemens S7-300 PLC and an Allen-Bradley ControlLogix PLC, using a Softing
echochange protocol converter.
General description of the presented example:
Both PLCs and the echochange are in the same network
The S7-300 controls the flow of communications, using PUT and GET functions
The PUT function is used to write data from a S7-300 data block (Data_to_CLX, 1
byte) onto a ControlLogix tag (Data_from_S7)
The GET function is used to read data from a ControlLogix tag (Data_to_S7, integer
array of 50 elements) and store it onto an S7-300 data block (Data_from_CLX)
Software used:
Siemens SIMATIC Step 7 V5.4 SP5
Allen-Bradley RSLogix 5000 V20.01.00 (CPR 9 SR 5)
Allen-Bradley RSLinx Classic Lite V2.59.02 (CPR 9 SR 5)
Softing NetCon echo V4.33
Conventions
The following conventions are used throughout Softing customer documentation:
Keys, buttons, menu items, commands and
other elements involving user interaction are
set in bold font and menu sequences are
separated by an arrow
Coding samples, file extracts and screen
output is set in Courier font type
Note
This symbol is used to call attention to notable information that should be
followed during installation, use, or servicing of this device.
