Rockwell Automation Logix Control Analog Servo Modules, Firmware 20 Release Notes
Summary
This essential guide provides comprehensive release notes for Rockwell Automation's ControlLogix Analog Servo Modules (1756 series), specifically covering Firmware Revision 20. It is designed for industrial automation engineers and technicians responsible for system upgrades, detailing crucial installation procedures, identifying necessary compatible software versions (like RSLogix 5000), and warning of known anomalies to ensure seamless deployment of advanced servo control systems.
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Release Notes
Control Logix Analog Servo Modules, Firmware Revision 20 Catalog Numbers 1756-HYD02, 1756-M02AE, 1756-M02AS
When to Use These Release Use these release notes for information about the following firmware revisions.
Notes
Module Cat. No. Firmware Revision Control Logix® 2-axis Hydraulic Servo Module 1756-HYD02 20.001 Control Logix 2-axis Analog Encoder Servo Module 1756-M02AE 20.002 Control Logix 2-axis Analog SSI Servo Module 1756-M02AS 20.001
IMPORTANT Before updating your Control Logix Analog Servo Modules, we strongly recommend that you review information pertinent to previous major firmware revisions. For example, when updating from revision 19.xx to 20.xx, view information in the Control Logix Analog Servo Modules, Revision 19 Release Notes, publication 1756-RN679, in addition to the content of these release notes.
Compatible Versions of Software To use firmware revisions 20.001 and 20.002, these minimum software versions are required.
Table 1 - Compatible Software Versions
Software Required Version RSLinx® Classic 2.59 (CPR 9, SR5) RSLinx Enterprise 5.50 CPR 9, SR5) RSLogix™ 5000 20.00 (CPR 9, SR5) Control Logix controller 20.xx RSNet Worx™ for Control Net 11.00 (CPR 9, SR5) RSNet Worx for Device Net RSNet Worx for Ether Net/IP
Page Summary Contents For Rockwell Automation Logix Control Analog Servo Modules, Firmware 20 Release Notes
Manual Details
| Brand | Rockwell Automation |
|---|---|
| Pages | 4 |
| File Size | 792.42 KB |
| Published | June 06, 2026 |
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Frequently Asked Questions
What is the first step before upgrading the firmware?
You must inhibit the module, as this disables the axes and makes updating easier.
Which software versions are compatible with Firmware Revision 20?
Required compatible versions include RSLinx® Classic 2.59, RSLogix™ 5000 20.00, and ControlLogix controller 20.xx.
Is there a known anomaly when using the 1756-M02AS module?
Yes, issuing an Absolute Feedback Offset via a Set System Value (SSV) instruction causes a feedback fault on this specific module.