Walks

No problem, I actually figured it out. I can just reset the network path in the RSlogix program to point to the EN2T backplane and select the controller slot. I was wondering if this was all I needed to do, but I wasn't able to try it until just now. Thanks for the help though!

The L81 definitely has an IP. The network layout layout from machine to controller is basically this, Machine (192.168.10.1) >> Stratix8000 (192.168.10.2) >> EN2T ( 192.168.10.3) >> L81E (192.168.20.1) If I was connected directly to the machines ethernet (192.168.10.XX), how would I go online with the L81E without changing ip addresses. Do I need to change the path in the RSlogix program?

Title mostly says it all. I'm using Ethernet/IP and I'm just wondering if I can connect and go online with my L81E (192.168.10.XX) if I am connected directly to an 1756-EN2T (192.168.20.XX) that is in the same backplane. My computer has to be set to the EN2T address for me to connect to it. I was thinking I could maybe just change the controller IP to temporarily match the Ethernet card. The EN2T runs though a Stratix8000 so changing the ip of the EN2T would require changing all the other IPs in the network. The ethernet card is collecting data from a machine that is far away and I don't have a direct Ethernet connection to the controller so it would be a pain to run back and fourth. The EN2T module is added in my main controller program and works just fine.

It doesn't appear to work, it will only clear the first tag array in the FIFO log, as in only TagHistory[0] is cleared while TagHistory[1],[2],[3].... all still have data in them.

Thanks, I'll give it a shot a little later when I have the PLC. Luckily, I don't have to worry about interrupting anything while I play around with the PLC code.

I'm using a FIFO log to store data from the last 100 items. The FIFO log is being filled with a UDT that has multiple elements, (i.e. TagHistory[0].Height, TagHistory[0].Width....etc.). Is there a way to clear all the data in each UDT in the entire FIFO log (TagHistory[0] - TagHistory[100]) without having to use 100 separate instructions? There is a condition I need to meet where it would be necessary to clear the entire FIFO, essentially deleting all the item history data and starting from scratch. I was looking into using a FLL instruction but I don't have access to the PLC at the moment, so I can't test it. Here is a link to a similar topic, Thanks for any help

Does anyone have any experience with sending multiple RS-232 devices to the same PLC? My current set up has 2 RS-232 devices sending raw ASCII data to a 2-port Comtrol DeviceMaster EIP-2202 where it is then sent to the PLC via Ethernet/IP. The problem is that now I need to add three more RS-232 devices. Without buying more DeviceMasters, is there a way of adding the 3 extra devices to where the data from each device can be read separately? I know RS-232 is 1 to 1, but is it at all reliable to use a multiplexer? I've looked into and I think it MIGHT work, but I'm a little nervous about adding the extra complexity. Another option I was looking into was to somehow convert multiple RS-232 connections to a single RS-485, which from my understanding can support multiple command and listening devices and I would need to be able to address each different device. My comtrl supports RS-232/422/485. Thanks for any help!

From my understanding and what I have been told by the supplier, the machine does not support Ethernet/IP. Hence the reason for me needing to use the Comtrol. Ethernet needs to be used because the PC will be placed far away from the machine and beyond the recommended range for serial communications. The machine is capable of sending data to a PLC or PC, but the only direct connection available on the machine is serial.

I'm trying to understand the basics of using a serial to ethernet converter such as this Comtrol DM-EIP-2101, with Studio5000 code. Basically I have a weighing machine that only outputs data via RS-232 and I need to send that data to a PC that will process it through a Studio5000 program and have the data displayed on an HMI using FTview SE. Is it as simple as just connecting the serial and ethernet to the converter and it does all the work? Obviously checking ip addresses and firmware will need to be verified. The main thing I am unsure of is the process of passing the individual data packets from the machine to the Logix code on the PC, things like what the weight of the item was, was it over weight or under, etc.... Would there be an AOI or tags built into the software for a machine like this Checkweigher? I've worked with much smaller items like Cognex Dataman cameras and I know you can just use their AOI that allows you to simply call a tag if you want to display information like if a scanned barcode was correct or whatever. If anyone has done something similar I'd appreciate any guidance. It can be difficult getting the information from the manufactures so I'm looking for answers anywhere I can. EDIT: I guess I should also clarify that only using one or the other (serial or E/IP) is not an option. It will be a serial connection from the Weighing machine to the converter and then Ethernet to the PC.

I'm currently working with a RSview32 v7.50 program running on Windows XP. I need to install Windows 7 32-bit on the computer and only v7.60 works with Windows 7. Is it possible to upgrade from v7.50 to v7.60, or will v7.60 still run a v7.50 program on Windows 7? Would upgrading to FTviewSE be easier? Thanks for any help