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Lawrence J Ortner

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Lawrence J Ortner


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RE: 5069 CompactLogix PLC Changing from Static to Dynamic IP Issue

Posted By Lawrence J Ortner Sep 04, 2025 02:09:18 PM
Found In Egroup: Automation Control \ view thread
Is it possible it is detecting a duplicate IP address? I wonder if it reverts to DHCP when it detects a duplicate. I am not able to test this, and I don't have any documentation that shows this behavior, but its something to consider. The user manual p49 says the port will go to "Conflict mode". What ...

RE: Convert CompactLogix rack into ControlLogix RIO

Posted By Lawrence J Ortner Jul 15, 2025 01:10:00 PM
Found In Egroup: Automation Control \ view thread
Michael, Take a look at the 1769-AENTR. This is an EtherNet/IP adapter for the 1769 Compact I/O. Or the 5069-AENTR for the newer Compact 5000 I/O. These two adapters allow you to add Compact I/O to a ControlLogix I/O configuration. They essentailly replace the CompactLogix controller and allow ...

RE: Communication Between 2 NATR'ed PLCs

Posted By Lawrence J Ortner Jul 14, 2025 11:17:00 AM
Found In Egroup: Networks \ view thread
Mendez, I assume your PC and both translated addresses are in the 172.16.37.0 range. It might be a simple issue. Since your controllers are CompactLogix, you need not include the " ,1,0" at the end of the path. It can simply be "1, 172.16.37.50". ------------------------------ Lawrence Ortner ...

RE: UDP Connection Lag

Posted By Lawrence J Ortner Jul 10, 2025 04:20:00 PM
Found In Egroup: Networks \ view thread
GRO, I am not sure I have an answer for you, but I have some observations. I have only dabbled with Sockets in Logix, but I remember struggling as well. I believe you need not pre-condition your message instructions with "NOT Read.EN AND (Read.DN OR Read.ER) ". Please look at the Logix Instruction ...

RE: Bender Isolation Monitor values over Modbus into CompactLogix PLC

Posted By Lawrence J Ortner Jun 18, 2025 09:51:00 AM
Found In Egroup: Automation Control \ view thread
Godfrey, Take a look at this knowledgebase document https://support.rockwellautomation.com/app/answers/answer_view/a_id/1126992/loc/en_US Your Bender unit is returning a Float value via Modbus in 4 bytes of data. It appears those 4 bytes are in your INT tags: HoldRegisters_4xxx[0] & [1]. ...

RE: Connecting Stratix5700 to company vLan

Posted By Lawrence J Ortner Jun 17, 2025 11:24:00 AM
Found In Egroup: Networks \ view thread
BRandon, I don't think I have an "answer" for you, but I have some suggestions to look at. First I see you have all ports set to VLAN 10, but you also mention that the port on the Cisco is set such that VLAN 10 is the NativeVLAN. When connecting switches with trunking it is necessary to have both ...

RE: 1787-DNPS migration to 1606-XLSDNET8

Posted By Lawrence J Ortner Apr 10, 2025 10:07:00 AM
Found In Egroup: Networks \ view thread
Gamze, Yes, the 1606 power supply can replace the 1787 for this application. The CANH and CANL (pins 2 & 3) connections to the 1787 were not connected internally. Pin 3 is connected to Chassis ground. Keep in mind the DeviceNet media rules: the black and shield should be tied together and grounded ...

RE: Visual Studio 1734-AENTR Ethernet/IP Communication without CPU

Posted By Lawrence J Ortner Apr 03, 2025 07:28:00 AM
Found In Egroup: Automation Control \ view thread
This is another guess, but when using Point I/O with a Logix controller I have gotton a similar error message. Which was caused by the AENTR not being configured for the correct number of slots. Remember to include the AENTR when counting, so it should be configured for 2 when there is only one module ...

RE: Visual Studio 1734-AENTR Ethernet/IP Communication without CPU

Posted By Lawrence J Ortner Apr 02, 2025 01:06:00 PM
Found In Egroup: Automation Control \ view thread
Emre, When configuring the 1734-AENTR with a Logix controller it is necessary to tell the AENTR how many modules are attached (including itself). This can be done through the AENTR's web interface. I also see that when configured with a single 1734-IB8, the AENTR returns two 4-byte status words, ...

RE: Issue with AENTR-IB16 Module – Communication Timeout (16#00203)

Posted By Lawrence J Ortner Apr 02, 2025 12:46:00 PM
Found In Egroup: Automation Control \ view thread
James, I also see that one of your picturs shows a status of Waiting. This is usually caused by an issue "upstream" of the module you are looking at. Perhaps there is an issue with teh 1794-AENTR?