Release Notes

CompactLogix L32E controller
Version 19.015 (released 11/2012)

Catalog Number 1769-L32E (series B)

These release notes describe version information for 1769-L32E, version 19.015 (released 11/2012).

Security

This release includes security enhancements as a part of our ongoing efforts to improve security. For information regarding Rockwell Automation's vulnerability disclosure process, please reference the Rockwell Automation Vulnerability Policy.

Access Denied dialog box does not appear when users without FactoryTalk Security access attempt to modify Motion Configuration (Lgx00184951)

Studio 5000 Logix Designer v29.00

Corrected Anomaly with Studio Logix Designer v30.00

When a user without Motion: Modify Configuration security credentials attempts to modify the motion configuration, an Access Denied dialog box does not appear.

Denial of Service/Buffer Overflow Vulnerability

Known Anomaly in Logix5000 Programmable Controllers, Firmware Revisions 16-21


A vulnerability exists in the Logix5000™ Programmable Controller product line that, if successfully exploited, can cause a Denial of Service ("DoS") or potentially allow an attacker to alter the operating state of the controller through a buffer overflow.


Risk Mitigations

Customers using affected controllers are encouraged to upgrade to an available firmware version that addresses the associated risk.

For details on affected controllers, recommended firmware revisions, and other risk mitigations, see Knowledgebase ID 970074.

  

Requirements

This release has the following requirements.

Firmware Requirements – 1769 CompactLogix Controllers

Catalog Numbers 1769-L31, 1769-L32C, 1769-L32E, 1769-L35CR, 1769-L35E

Consider the following before upgrading the firmware on your 1769 CompactLogix controller:

Consideration
Description
Avoid Interrupting the Firmware Upgrade
 
When upgrading your controller firmware, it is extremely important to allow the upgrade to complete without interruption.
If you interrupt the firmware upgrade either in the software or by disturbing the physical media, you may render the controller inoperable.
During an upgrade of the CompactLogix firmware, the ControlFLASH™ utility displays various progress dialog boxes. The progress dialog boxes contain these status statements:
  • Transmitting block…
  • Polling for power-up…
It is crucial that you do not interrupt the firmware upgrade while these progress statements are displayed. Once the Update Status dialog box indicates that the firmware upgrade is complete, you may adjust your controller’s network connection, make changes using controller-related software, or cycle controller power.
End Cap Needed for Firmware Upgrade
Attempting a firmware upgrade without the controller end cap attached does not complete.
When upgrading your controller firmware, verify that your end cap is properly attached and locked. If you attempt to upgrade without the end cap attached, your firmware upgrade may not complete successfully.

 

Controller Memory Limits
If your controller is close to its memory limit and this firmware revision requires more project memory, you can upgrade to a controller that has more memory.
Avoid Loss of Communication During Firmware Upgrade
Loss of communication or power during a controller firmware upgrade may result in the controller’s rejection of the new firmware. If the controller firmware upgrade fails due to those conditions described, the following corrective actions may be required.
  • Cycle controller power with the battery disconnected for 2…3 minutes, then successfully complete the flash upgrade.
  • If a nonrecoverable fault occurs, contact Rockwell Automation Technical Support for a ticket number and return the controller for factory repair.
Disconnect Controller from DH-485 Network Before Firmware Upgrade
If your controller is connected to a DH-485 network, disconnect it from the DH-485 network before you update the firmware of the controller. If you update the firmware of a controller while it is connected to a DH-485 network, communication on the network may stop.
Firmware Upgrade on 1769-L32E or 1769-L35E Controller
IMPORTANT: This consideration applies only to 1769-L32E and 1769-L35E controllers.
We recommend that you complete the following tasks before attempting a firmware upgrade on a 1769-L32E or 1769-L35E:
  1. Check the status of the MS (module status) status indicator next to the Ethernet port. If it is flashing red before you begin the upgrade, additional action may be required. Contact Rockwell Automation Technical Support for more information.
  2. Modify the Port Configuration for the Ethernet card so that the Network Configuration Type is set to Static and assign a valid IP address.
  3. If RSWho is actively browsing the controller through an Ethernet or serial connection, close the RSWho window to stop the browse.
  4. If other controllers are messaging to the 1769-L32E or 1769-L35E controller, take the other controllers off the network or put them in Program mode.
  5. If there are controllers consuming tags from the 1769-L32E or 1769-L35E controller, remove them from the network.
  6. If there are HMI devices connected to the controller, disconnect them from the network or shut them down.
IMPORTANT: If you cannot perform the tasks listed above before attempting a controller firmware upgrade, Ethernet traffic on the controller’s Ethernet port may cause the ControlFLASH utility to timeout during the firmware upgrade. If the timeout condition is not handled properly, you may render the Ethernet port on the controller inoperable, requiring you to return the controller to Rockwell Automation for repair.
In the event that a ControlFLASH timeout occurs, the software displays an error dialog indicating that the ‘Target Device failed to report the new revision number’, or that the upgrade ‘Failed to begin update to the target device’.
If the error dialog boxes display, check the MS status indicator. If the indicator is flashing red, the upgrade is still in progress and should not be interrupted. Do not cycle power to the controller while the status indicator is flashing red.
If the upgrade completes, the controller power cycles itself and indicates the upgrade is complete with a solid green MS status indicator. The time required to complete the upgrade is dependent on the level of Ethernet traffic.
If the controller does not complete the upgrade, the MS status indicator continues flashing red. In this case, contact Rockwell Automation Services and Support.
Use of ControlFLASH software, Version 9 (CPR9 SR3) with Firmware Revision 19
IMPORTANT: This consideration applies only when you are using firmware revision 19.
Consider the following before you install the ControlFLASH software, version 9:
  • We recommend you install RSLinx communication software, version 2.057, before you install ControlFLASH software, version 9 (CPR9 SR3).
  • If you install RSLinx communication software, version 2.057, before you install ControlFLASH software, version 9, you can enable or disable the FactoryTalk Security platform during ControlFLASH software, version 9, installation. However, to disable the FactoryTalk Security platform, you must first uninstall ControlFLASH software, version 9, then reinstall it.
  • If the FactoryTalk Security platform is enabled during ControlFLASH software, version 9, installation, the software opens with a Select FactoryTalk Directory dialog box. At that dialog box, click the following:
    • Network
    • Local
    • Cancel - If you click Cancel, you must select a directory.
  • ControlFLASH software, version 9, only integrates the FactoryTalk Security platform in the FactoryTalk Services Platform, version 2.030 or later.

 

 

Corrected Anomalies in This Release

This release corrects the following anomalies.

FOR Instruction is Scanned True (Lgx00135466, Lgx00118590)

If a FOR instruction is scanned true, and an instruction has an index out of range that references a UDT or a multi-dimensional array, the controller will fault. Clearing the fault and returning to Run mode causes a non-recoverable major fault.

graphic


Corrected

Cat. No.
Corrected in the Following
1769-L23E-QB1B, 1769-L23E-QBFC1B, 1769-L23-QBFC1B
  • Firmware Revision 19.015/RSLogix 5000 Software Version 19
  • Firmware Revision 20.013/RSLogix 5000 Software Version 20
1769-L31, 1769-L32C, 1769-L32E, 1769-L35CR, 1769-L35E
  • Firmware Revision 19.015/RSLogix 5000 Software Version 19
  • Firmware Revision 20.013/RSLogix 5000 Software Version 20

Anomaly Browsing 1769 CompactBus (Lgx00135035, Lgx00129484)

Known Anomaly

Cat. No.
Identified As Of
1769-L23E-QB1B, 1769-L23E-QBFC1B, 1769-L23-QBFC1B
  • Firmware Revisions 19.011 and 19.013/RSLogix 5000 Software Version 19
  • Firmware Revisions 20.011 and 20.012/RSLogix 5000 Software Version 20
1769-L31, 1769-L32C, 1769-L32E,1769-L35CR, 1769-L35E
  • Firmware Revisions 19.011 and 19.013/RSLogix 5000 Software Version 19
  • Firmware Revisions 20.011 and 20.012/RSLogix 5000 Software Version 20

Your controller might experience an anomaly when browsing the 1769 CompactBus or through a 1769-SDN on the 1769 CompactBus.  Signs of the anomaly are as follows.

Once the controller has entered this state, the only way to correct the anomalous behavior is to do the following.

  1. Power down the controller.
  2. Remove the battery.
  3. Let the controller set for approximately five minutes.
  4. Reconnect the battery.
  5. Redownload the application.
 

Corrected

Cat. No.
Corrected As Of
1769-L23E-QB1B, 1769-L23E-QBFC1B, 1769-L23-QBFC1B
  • Firmware Revision 19.015/RSLogix 5000 Software Version 19
  • Firmware Revision 20.013/RSLogix 5000 Software Version 20
1769-L31, 1769-L32C, 1769-L32E, 1769-L35CR, 1769-L35E
  • Firmware Revision 19.015/RSLogix 5000 Software Version 19
  • Firmware Revision 20.013/RSLogix 5000 Software Version 20

Anomaly on CompactBus when using the IOT Instruction (Lgx00133424, Lgx00132827)

Known Anomaly

Cat. No.
Identified As Of
1769-L23E-QB1B, 1769-L23E-QBFC1B, 1769-L23-QBFC1B
  • Firmware Revisions 19.011 and 19.013/RSLogix 5000 Software Version 19
  • Firmware Revisions 20.011 and 20.012/RSLogix 5000 Software Version 20
1769-L31, 1769-L32C, 1769-L32E,1769-L35CR, 1769-L35E
  • Firmware Revisions 19.011 and 19.013/RSLogix 5000 Software Version 19
  • Firmware Revisions 20.011 and 20.012/RSLogix 5000 Software Version 20


When using the IOT (Immediate Output) instruction with a CompactLogix controllers data integrity anomalies on the 1769 CompactBus may occur.

When using the IOT instruction there is the potential that data integrity anomalies will be seen. These data integrity anomalies will occur for one RPI.

For example:

An IOT instruction is used with an1769-OB16 module. The 1769-OB16 module outputs are wired back to a 1769-IQ16F module. When the IOT instruction triggers for the 1769-OB16 module, the input values that are seen for the 1769-IQ16F module may not match the values sent by the 1769-OB16 module for one RPI. This does not occur every time the IOT instruction is executed.

 

Known Anomalies from Previous Releases

These anomalies are from previous releases but are still known in this release.

PI Function Block Appears to Stop Executing

Known Anomaly First Identified as of:

The PI Function block appears to stop executing as the output does not change and instruction faults are logged.

If the PI instruction is being used in Linear mode, this floating point equation is used to calculate the ITerm.

graphic

Due to the use of the single-precision floating point values, it is possible. This possibility is dependant on on the values of WLD and KP, for the ITerm value to be small enough, less than 0.0000001, to be lost when adding to the ITermn-1.

For more information regarding the PI instruction, see the Logix5000™ Controllers Process Control and Drives Instructions User Manual, publication 1756-RM006.



Alarm Systems Timeout Changes Require New Download (00069461)

Known Anomaly First Identified as of:

Changes made to the Buffer Timeout value for FactoryTalk® Alarm subscribers do not take effect until the existing buffer has been deleted.

The FactoryTalk alarm buffer (stored in Logix controller memory) is designed to persist through power cycles. If you change the Buffer Timeout value (via the Communication Setup dialog in FactoryTalk View SE), the controller does not use the new timeout value until the existing buffer is deleted and then recreated. To force recreation of this buffer, you can either:


Corrected

Cat. No.
Corrected As Of
11769-L23E-QB1B, 1769-L23E-QBFC1B, 1769-L23-QBFC1B
Firmware Revision 20.011/RSLogix 5000 Software Version 20
 
1769-L31, 1769-L32E, 1769-L32C, 1769-L35E, 1769-L35CR
Firmware Revision 20.011/RSLogix 5000 Software Version 20

VA Task Overlap (Lgx00118179, Lgx00117865, Lgx00135044, Lgx00118176)

Restriction/Known Anomaly

Cat. No.
Identified As Of
11769-L23E-QB1B, 1769-L23E-QBFC1B, 1769-L23-QBFC1B
Firmware Revision 17.005/RSLogix 5000 Software Version 17
1769-L31, 1769-L32E, 1769-L32C, 1769-L35E, 1769-L35CR
Firmware Revision 16.022/RSLogix 5000 Software Version 16

Tasks are the basic scheduling mechanism for executing a program and are created as part of the project and program creation process. In addition to other internal tasks, the CompactLogix controllers have an internal task to provide communication with the 1769 I/O modules. This task executes periodically at the Requested Packet Interval (RPI) selected in the properties of the CompactBus. If the task has not completed before it is time to execute again, a task overlap occurs. This task overlap causes the packaged controller to declare a minor fault of Type = 6 (Task Overlap), Code = 4 (VA task).

You can use various strategies to resolve minor faults due to task watchdog timeout and/or task overlap. For more information, see RSLogix 5000 Online Help ‘Identifying and Managing Tasks’. In the case of a minor fault caused by VA task overlap, increase the RPI until the overlap no longer occurs.

 

Cycle Power to Clear a Major Fault

Known Anomaly First Identified as of:

If a 1769 I/O fault occurs, you must cycle power to the CompactLogix™ controller after clearing the major fault. I/O communication is not restored until after the power cycle. Never use the fault handling routine to clear local I/O faults. Clear local I/O faults manually on a per case basis, and then the controller must be power cycled.

MSG Execution in Master Slave Configurations (Lgx00083882, Lgx00082610)

Corrected as of:

Known Anomaly

Unsuccessful MSG execution results in subsequent unsuccessful messages in master/slave controller configurations.

When a DF1 serial connection is used between a master and slave controller, an MSG instruction is not successfully executed and an in-polling sequence error occurs if the master station address is not listed in the poll node list.

However, with this anomaly, after the in-polling sequence error, subsequent MSG instructions are also unsuccessful.

To work around this anomaly, change the master station address of a controller to another value or re-execute the unsuccessful MSG instruction in Master

Transmit mode and use the Between Station Polls parameter.


Time Synchronization Causes Controller to Become Local Master

Known Anomaly First Identified as of:

Enabling the time synchronization feature of a CompactLogix™ controller results in the controller becoming the local master. It does not result in the controller synchronizing with other wallclock times in the system.


Fault/Program States Not Supported by Using the Module Configuration
Dialog Box

Known Anomaly First Identified as of:

This anomaly applies to CompactLogix™ systems as follows:

In this description, the term I/O module refers to 1769 Compact output modules or output points on 1769 Compact combination modules.

RSLogix™ 5000 software does not support Fault/Program state action for I/O modules in CompactLogix systems. The controller cannot trigger the configured Fault/Program state action. You can configure the Fault/Program state action in RSLogix 5000 software, but the configuration does not take effect.

If either of the following conditions exists, outputs turn off, regardless of the Fault/Program state action configuration:

Additionally, RSLogix 5000 software generates configuration tags for any I/O modules in the project. Some of the tags define configuration (C) data type members that include attributes for Fault/Program states, also known as alternate output states.

Because CompactLogix systems do not support Fault/Program state action for I/O modules, do not configure the attribute tags listed in the following table.

Attribute Tags to Avoid

Digital Output Modules
Analog Output Modules
  • ProgToFaultEn
  • ProgMode
  • ProgValue
  • FaultMode
  • FaultValue
  • CHxProgToFaultEn
  • CHxProgMode
  • CHxFaultMode
Where CHx = the channel number


HMI Tags on Scan in the Controller (Lgx00135042, Lgx00118193, Lgx00118192, Lgx00115817)

Corrected as of:

Known Anomaly First Identified as of:

Applications that have a large quantity of HMI tags on scan in the controller can experience a nonrecoverable major fault when doing online edits.


S-curve Function Executes with Uninitialized Values

Corrected as of:

Known Anomaly First Identified as of:

When you perform a Partial Import Online (PIO) of a function block routine that contains S-curve function blocks across Logix platforms, set the Initialize bit in the backing tag control structure of all S-curve instructions. This configuration causes the S-curve instructions to reinitialize themselves.

Failure to set the Initialize bit in the backing tag control structure of all S-curve instructions, can cause the S-curve function block to execute with uninitialized values.



MNRF Using Add-On Instructions With Same Reference Tag (Lgx00122436, Lgx00113448)

Corrected as of:

Corrected: SoftLogix™ 5800 Version 20.00.00

Known Anomaly First Identified as of:

When using Add-On Instructions, if you use the same backing/reference tag for multiple Add-On Instructions that are in different tasks, the controller can experience a major non-recoverable (MNRF) fault.

For example, you have an Add-On Instruction that is called MotorStart that is used twice in the application, once in Periodic Task 1 and once in Periodic Task 2. In both cases the MotorStart Add-On Instruction uses the same backing/reference tag PumpMotorStart.

The following events can occur when the program is executing:

1. Periodic Task 1 is executing and the Motor_Start is being scanned.

2. Periodic Task 2 pre-empts Periodic Task 1.

3. Periodic Task 2 runs and the Motor_Start is executed.

4. Periodic Task 1 is allowed to again execute and completes scanning of the Motor_Start.

5. Upon completion of scanning Motor_Start, the controller can MNRF.

The MNRF occurs if one instance of the Motor_Start scans false and the other scans true. To work around this anomaly, use individual backing/reference tag for all Add-On Instructions.


Functional Changes

This release has the following functional changes from the previous release.

V19 Additional Memory Requirements for 1769 CompactLogix Controllers


Functional Change

 

Cat. No.
Initial Firmware Revision/Software Version
1769-L31, 1769-L32C, 1769-L32E, 1769-L35CR, 1769-L35E
Firmware Revision 19.011/RSLogix 5000 Software Version 19



Firmware revision 19.000 or later may require more memory than previous revisions, for example, revision 10.xxx or 11.xxx). To estimate the additional memory that your project may require, use this table.

If you upgrade from revision (add all that apply)
 
Then add the following memory requirements to your project
 
Which comes from this type of memory
 
Component
Increase/Decrease Per
Instance
I/O
Data and Logic
18.x to 19.x
 
<no change>
 
 
17.x to 18.x
Program
+ 8 bytes
 
ü
 
Equipment phase
+ 20 bytes
 
ü
 
Add-On Instruction
+ 12 bytes
 
ü
 
Each tag
In addition, if you use a tag of the types listed below, increase the memory as indicated for each instance:
+ 4 bytes
 
ü
 
Produced tag
+ 36 bytes + (24 bytes x number of consumers)
ü
 
 
Consumed tag
+ 24 bytes
ü
 
 
Data access control
+ 4 bytes per symbol
 
ü
 
Tag that uses ALARM_ANALOG data type
- 20 bytes
 
ü
 
Tag that uses ALARM_DIGITAL data type
+ 28 bytes
 
ü
 
Tag that uses MOTION_GROUP data type
+ 76 bytes
 
ü
 
Tag that uses AXIS_SERVO_DRIVE or AXIS_GENERIC_DRIVE data type
+ 786 bytes
 
ü
 
Tag that uses AXIS data type other than AXIS_SERVO_DRIVE or
AXIS_GENERIC_DRIVE
+ 818 bytes
 
ü
 
Tag that uses COORDINATE_SYSTEM data type with no transform dimensions
+ 40 bytes
 
ü
 
Tag that uses COORDINATE_SYSTEM data type with transform dimensions
+ 100 bytes
 
ü
 
Module input connection
+ 20 bytes
 
ü
 
Module output connection
+ 24 bytes
 
ü
 
Safety controller
- 8 bytes
 
ü
 
Safety partner
- 8 bytes
 
ü
 
For each controller (> 1K bytes change):
 
 
 
 
1756-L6x, 1756-L6xS, 1756-L63XT
+ 16728 bytes
 
ü
 
1768-L4x, 1768-L4xS
+ 14448 bytes
 
ü
 
1769-L2x
+ 35084 bytes
ü
 
 
1769-L31
+ 14740 bytes
ü
 
 
1769-L32C, 1769-L35CR
+ 35400 bytes
ü
 
 
1769-L32E, 1769-L35E
+ 35036 bytes
ü
 
 
1789-L10, 1789-L30, 1789-L60
+ 4992 bytes
ü
 
16.x to 17.x
Task
+ 4 bytes
 
ü
 
Program
+ 4 bytes
 
ü
 
Equipment phase
+ 8 bytes
 
ü
 
LD routine
+ 12 bytes
 
ü
 
FBD routine
- 8 bytes
 
ü
 
SFC routine
+ 28 bytes
 
ü
 
ST routine
+ 4 bytes
 
ü
 
Add-On Instruction
- 12 bytes
 
ü
 
If you use a tag of the types listed below, increase the memory as indicated for each instance:
 
 
 
 
Produced tag
+ [4 bytes + (4 bytes x number of consumers)
ü
 
 
Consumed tag
+ 8 bytes
ü
 
 
Tag that uses MESSAGE data type
+ 4 bytes
 
ü
 
Tag that uses ALARM_ANALOG data type
- 64 bytes
 
ü
 
Tag that uses ALARM_DIGITAL data type
- 28 bytes
 
ü
 
Tag that uses AXIS_SERVO_DRIVE or AXIS_GENERIC_DRIVE data type
- 34 bytes
(2 bytes x number of output cam execution targets)
 
ü
 
Tag that uses AXIS data type other than AXIS_SERVO_DRIVE or
AXIS_GENERIC_DRIVE
- 52 bytes
(2 bytes x number of output cam execution targets)
 
ü
 
Tag that uses COORDINATE_SYSTEM data type of 2 dimensions with 2 transform dimensions
+ 20 bytes
 
ü
 
Tag that uses COORDINATE_SYSTEM data type of 3 dimensions with 3 transform dimensions
+ 108 bytes
 
ü
15.x to 16.x
If you use a tag of the types listed below, increase the memory as indicated for each instance:
 
 
 
 
Tag that uses ALARM_ANALOG data type (with no associated tag references)
+ 16 bytes
 
ü
 
Tag that uses ALARM_DIGITAL data type (with no associated tag references)
+ 4 bytes
 
ü
 
Tag that uses ALARM_ANALOG data type (if associated tags are configured for the ALARM_ANALOG tag)
+ 22 bytes
+ (9 x the number of configured, associated tags)
+ (3 x the sum of the bytes used by the data type of each of the configured associated tags)
For example, an analog alarm moved to V16.03 with two Associated Tags
– one DINT (4 bytes) and one STRING (88 bytes) would need to add:
22 + 9(2) + 3(92) = 316 bytes
 
ü
 
Tag that uses the COORDINATE_SYSTEM data type
+ 132 bytes
 
ü
14.x to 15.x
Input module
+ 4 bytes
ü
 
 
If you use a tag of the types listed below, increase the memory as indicated for each instance:
 
 
 
 
Produced tag
+ 12 bytes
ü
 
 
Consumed tag
+ 4 bytes
ü
 
 
Tag that uses COORDINATE_SYSTEM data type
+ 748 bytes
 
ü
 
Tag the uses any AXIS data type
+ 800 bytes
 
ü
 
Task
+ 20 bytes
 
ü
 
Program or equipment phase
+ 24 bytes
 
ü
 
Routine
+ 4 bytes
 
ü
 
Serial port
+ 1120 bytes
 
ü
 
Project
+ 4012 bytes
 
ü
13.x to 14.x
If you use a tag of the types listed below, increase the memory as indicated for each instance:
 
 
 
 
Tag that uses the COORDINATE SYSTEM data type
+ 60 bytes
 
ü
 
Tag that uses any AXIS data type
+ 4 bytes
 
ü
12.x to 13.x
Program
+ 12 bytes
 
ü
 
Task
+ 4 bytes
 
ü
 
User-defined data type
+ 4 bytes
 
ü
 
I/O module
+ 16 bytes
ü
(8 bytes)
ü
(8 bytes)
 
If you use a tag of the types listed below, increase the memory as indicated for each instance:
 
 
 
 
Produced tag
+ 8 bytes
ü
 
 
Consumed tag
+ 8 bytes
ü
 

 

Rockwell Automation recognizes that some of the terms that are currently used in our industry and in this publication are not in alignment with the movement toward inclusive language in technology. We are proactively collaborating with industry peers to find alternatives to such terms and making changes to our products and content. Please excuse the use of such terms in our content while we implement these changes.

Copyright © 2026 Rockwell Automation, Inc. All rights reserved.
Rockwell Automation, Allen-Bradley, and FactoryTalk are trademarks of Rockwell Automation, Inc.
To view a complete list of Rockwell Automation trademarks please click here.
Trademarks not belonging to Rockwell Automation are property of their respective companies.