16 Rockwell Automation Publication 1766-UM001O-EN-P - September 2021
Chapter 1 Hardware Overview
• 1763-NC01 Series A or later
• 1747-CP3 Series A or later
Programming Programming the MicroLogix 1400 controller is done using RSLogix 500/
RSLogix Micro software, version 8.10.00 or later for Series A controllers and
version 8.30.00 or later for Series B and Series C controllers. Communication
cables for programming are available separately from the controller and
software.
Firmware Revision History
Features are added to the controllers through firmware upgrades. Use the
listing in Table 1
to be sure that your controller’s firmware is at the level you
need. Firmware upgrades are not required, except to allow you access to the
new features.
ATTENTION: UNSUPPORTED CONNECTION
Do not connect a MicroLogix 1400 controller to another MicroLogix family
controller such as MicroLogix 1000, MicroLogix 1200, MicroLogix 1500, or
the network port of a 1747-DPS1 Port Splitter using a 1761-CBL-AM00 (8-
pin mini-DIN to 8-pin mini-DIN) cable or equivalent.
This type of connection will cause damage to the RS-232/RS-485
communication port (Channel 0) of the MicroLogix 1400 and/or the
controller itself. The communication pins used for RS-485
communications on the MicroLogix 1400 are alternately used for 24V
power on the other MicroLogix controllers and the network port of the
1747-DPS1 Port Splitter.
Table 1 - MicroLogix 1400
Catalog Number
OS
(1)
Series
Letter
OS Revision
Letter
OS
Firmware
Release No.
Release Date Enhancement
1766-L32AWA
1766-L32BWA
1766-L32BBB
A A FRN1 August 2005 Initial product release.
A B FRN2 October 2005
According to the SRAM component, MicroLogix 1400 may cause Hard-fault at the
start of the Operating System in the very high temperature environment. Corrected.
A C FRN3 February 2006 Added Data file write feature through web server.
1766-L32AWA
1766-L32BWA
1766-L32BBB
BA FRN4 February 2007
• Direct connection to RS-485 Network for DF1 half-duplex Master driver.
• Direct connection to RS-485 Network for DF1 half-duplex Slave driver.
• Direct connection to RS-485 Network for ASCII driver.
• Selectable Stop/Data Bits for Modbus Master RTU driver.
• Selectable Stop/Data Bits for Modbus Slave RTU driver.
• Selectable Stop/Data Bits for ASCII driver.
• Settable Inactivity Timeout feature for Ethernet driver.
• Unsolicited Ethernet messaging to RSLinx® OPC topic.
• CIP™ Generic messaging through the Ethernet port.
• Unconnected EtherNet/IP protocol for Ethernet driver.
• IP conflict detection mechanism.
• E-mail feature.
• Ethernet MSG break bit.
• DNS functionality when E-mail feature is used.
• Change IP Address using Ethernet MSG instruction.
• ST file type for all PCCC commands.
• HSC (High-Speed Counter) up to 40 K Hz.
• PTO/PWM up to 40 K Hz.
• 2-channel Analog Input Filter.
• Web View Disable for Data Files.
1766-L32AWA
1766-L32BWA
1766-L32BBB
B B FRN5 May 2007
• Fixed defect for CIP Messaging Error when CIP service code is 4Bh or 4Ch.
• Fixed defect for the EtherNet/IP List Identity reply.
• Fixed defect for window size error in TCP/IP stack.
• Improved system interrupt delay time.
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