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Everything posted by pmcmahill
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Yes, AB supports Modbus TCP, but generally i have not used Modbus TCP, but have done Modbus Serial on a Mitsubishi and 20 years ago. Thanks for all the advise and opinions, but if we do the particular upgrade, we will be replacing the LOGO anyway.
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I have a purchased Machine that came with a Siemens LOGO 8.FSR PLC (Smart Relay). Generally we use Allen Bradley or Mitsubishi. Anyway, we need to communicate data between the LOGO and an Allen Bradley Compact Logix. I do not desire to add an additional network to the AB but as best i can tell the LOGO is exclusively Modbus TCP/IP. Has anyone come across a similar situation? I look online and did find an Anybus module that claims to be able to link them together. Looking for anyone who has faced this challenge and succeeded, or failed. Thanks
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We have been successful using the EIP4CCPU module in communicating Ethernet IP between Compact Logix And Mits Q PLC's. Always with the Allen Bradley as the master. However, we are presently trying to control a 520 PowerFlex VFD from the Q series as master. Has anyone attempted this?
- 18 replies
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- eip4ccpu
- ethernet ip
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(and 1 more)
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Sounds like you already have the Mitsubishi setup as master and we had the AB as the master. So not sure what to do here right now. I will look in my notes when we started and see what we did for the Mitsubishi in charge of the link.
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On screen shot, the IP address in the EIP software should match IP Address in the AB Generic Bridge Configuration
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Check with distributor. EIP and CPU bundle cheaper than buying separately.
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Let me start off by stating that when we talk between AB and Mits, we use the AB as the master. I can give more information tomorrow.
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Long ago i remember finding a way to change the online step number limit, which is defaulted to 500. But it was probably 15 years ago, and i have forgotten how i did it. Has anyone else found a way to change this?
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Well, I am presently doing a project with a Q04UDVCPU, but I also have quite a few Q04UDHCPU's in plant. We use GX Developer v8.116 and GX Works 2 v1.513. When I remember doing this was an earlier GX Developer and was a Q4A CPU
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I am new to Siemens PLC and i am doing a project where i am using a S7-1214C (DC DC RLY) and i am adding a CM1243-5 ProfiBus module on the left side. I was told that i need to use a DPRD_DAT and DPWR_DAT command to interface with my Beckhoff field I/O.. I am confused for two reasons - (1) I can find no example of good answer on how to use this command to connect to my I/O. (2) Why do i need a program statement to read my Profibus I/o when there is a newtork setup feature in TIA V13. (am attaching a screen image of ProfiBus setup page) Anybody explpain this to me? Thanks
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I am looking at a project that will require communication between a machine with a Rx3i controller and a machine that already has a Control Logix controller. I know the Rx3i has a Ethernet card available, but is it cable of communicating with EthernetIP protocol to a COntrol Logix?
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I have Q02HCPU PLC talking to a ProFace GP2500 via RS232. I have the proface parameters set for 16 data registers. I can read the present value of the Proface clock. I have the value that I want the ProFace clock to be set to in the appropriate data registers. What do I do to trigger the ProFace to to update the clock from my PLC data registers?
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I have Q02HCPU PLC talking to a ProFace GP2500 via RS232. I have the proface parameters set for 16 data registers. I can read the present value of the Proface clock. I have the value that I want the ProFace clock to be set to in the appropriate data registers. What do I do to trigger the ProFace to to update the clock from my PLC data registers?
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3rd Party Ethernet Comm Error Detect and Reset
pmcmahill posted a topic in Allen Bradley / Rockwell Automation
I have been trying to find out how to detect and auto-reset lost comm of my ethernet I/O interface modules. After several attempts and chit-chatting with others, we have found a semi-simple way to do this on the ControlLogix platform. I am attaching a PDF file showing what we did here. If anyone else has another solution, I would like to know. FYI - using a ENBT/A ethernet card and Phoenix FL IL 24 BK ETH/IP-PAC field Pat Ethernet_Auto_Reset.pdf -
3rd Party Ethernet Comm Error Detect and Reset
pmcmahill replied to pmcmahill's topic in Allen Bradley / Rockwell Automation
I have never done a GSV command, and I was not sure how much scan time it would eat up. I was also concerned if it would cause trouble with my ethernet communication. That is why I put in the conditional timer. However, eveb if I had not put the timer on the GSV, I would need to put a timer on the MSG. I would not want to send it a constant reset while it was in the act of reseting. Anyway, thanks for the advice. I may look at changing this in the future.