Tapas Thakker
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Everything posted by Tapas Thakker
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Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker replied to Tapas Thakker's topic in Allen Bradley / Rockwell Automation
I have attached the Wireshark log I got, don't know how the driver is configured but trying to figure out where the issue is. Don't know how to do it, but will try and get these logs if I can Thanks a lot for your help -
Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker replied to Tapas Thakker's topic in Allen Bradley / Rockwell Automation
Thanks Mark, I have attached a screen capture of the Connection Manager trying to establish a connection of 2500 bytes. However, further investigations suggest the cap is not on the size as the comms again fell over for a request of 12 attributes which was around 210 bytes. I guess there is a limitation on the number of Multiple service packet requests? Don't seem to find where the problem is. Regards, Tapas -
Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker replied to Tapas Thakker's topic in Allen Bradley / Rockwell Automation
Yes Mark, The Controller slot is a part of the request path when a CIP connection is getting established. Have attached a log, The issue is, when there is a Large Forward Open connection established with a Controller (Slot), and the server tries to establish another Large Forward Open with another Controller (Slot) it gets a connection failure That is the reason for trying to use different ports, but we are getting connection failure when trying to use port number 49152-65535 Regards, Tapas -
Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker replied to Tapas Thakker's topic in Allen Bradley / Rockwell Automation
That's True Mark, should be referring to documents first, but practicing patience is a very very difficult task Thanks a lot!! Regards, Tapas -
Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker posted a topic in Allen Bradley / Rockwell Automation
Hello Guys, I am very new to CIP messaging and in our project, we are trying to Controllogix to SCADA server using CIP messaging: What I understand from the process right now is : 1. SCADA Opens a connection for Large forward Open ( Connection size set at 2500 bytes) 2. PLC responds and establishes a connection 3. SCADA send an MSP request to access tags from PLC 4. PLC responds to this request The problem we are facing is the PLC doesn't send out a response of more than 240 bytes, Have any of you guys have faced a similar issue or can help me with troubleshooting? Thanks in advance Attached screen captures from wire- 21 replies
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Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker replied to Tapas Thakker's topic in Allen Bradley / Rockwell Automation
Yes Mark, I got a copy of CIP spec Volume 1 and Volume 3 -
Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker replied to Tapas Thakker's topic in Allen Bradley / Rockwell Automation
Thanks a lot again, you are awesome Regards Tapas -
Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker replied to Tapas Thakker's topic in Allen Bradley / Rockwell Automation
Ok, got you I can see that the serial number is same for both requests, so we have to use different serial numbers to have a separate connection to different slots Will try and implement that and see Thanks a lot again,will let you know the results Regards, Tapas -
Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker replied to Tapas Thakker's topic in Allen Bradley / Rockwell Automation
Hi Mark, Thanks a lot for your help earlier, Now we are trying to establish two separate TCP connections, this is because we have two CPU's on the same Rack and an EN2T card Is it possible to use port numbers other than 44818 to access data? Tried port number 49152-65535 range to test but it failed, giving a connection failure. Regards, Tapas -
Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker replied to Tapas Thakker's topic in Allen Bradley / Rockwell Automation
Hello Mark, The fix that you pointed worked well and now we are able to work with the Large forward open request Thanks a lot for your help Regards, Tapas -
Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker replied to Tapas Thakker's topic in Allen Bradley / Rockwell Automation
Got that Mark, Thanks a lot, will fix and try it Will let you know the results Regards, Tapas -
Controllogix CIP with SCADA using Large Forward Open Connected Messaging
Tapas Thakker replied to Tapas Thakker's topic in Allen Bradley / Rockwell Automation
In attached logs, there are two requests one for 11 reals and one for 15 reals The response for both is only with 11 reals Initially thought it was because of the data size limit, but that is not the case -
Floating point number math instruction NT20S and CPM1A
Tapas Thakker replied to Tapas Thakker's topic in CX-Programmer
Thank you Michael, have implemented it and worked fine Thanks Tapas -
Floating point number math instruction NT20S and CPM1A
Tapas Thakker posted a topic in CX-Programmer
Hi, I am new to Omron and trying to display a floating point number on NT20S display, have got an encoder which sends pulse on a HSC ( High Speed Counter) and I need to multiply that count by a factor (0.0253) and this display should be continuous, using a CPM1A controller What is the best way to implement this? Thanks for help!!