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To Infinity

May 26, 2017, 8:40 am
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Hello.  This is my first post and I hope someone has a solution.

I have a program calculating Gal/sec adding to a running total and have up to the end.  Using REAL I can accumulate up to 16,777,216 (2^24) and using DINT up to 2,147,483,648 (2^31), but I need to have my registers continue past these limits.  I've read through many topics here and have tried the Rockwell Knowledge Base but can't seem to find a solution that truly works.  I have gone so far as to transfer the DINT to a string, cut the string into pieces and reassemble them in an Odometer type concatenation.

If anyone has a suggestion, I would appreciate it.  I know I'm not the only one with this problem.

PS & BTW - I'm using Studio 5000 v24 with a 1769 L33ER

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Sequential Function Charts (SFC)

May 1, 2017, 10:14 am
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I know that the most common programming languages are Ladder, Structured Text, and Function Block, but I'm curious how many forum members have experience with Sequential Function Charts?  I just took some Rockwell training and asked the same question there, the answer I got was that SFC's are more common in Europe.

I've been playing around a bit with them, as I think they would be good for programming the Automatic Mode of a State machine.  Thoughts?  I'm curious for some Pros & Cons from other members?  

Thanks!

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DP Flow Measurement

June 12, 2013, 3:01 pm
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I have a pending application to measure flow across a flow control valve using differential pressure (its accurate to +/- 3 %). Traditional method is to use a DP transmitter, but I understand the Compact Logix can do a square root math calculation to get flow rate. If we can use the compact logix then it would require to pressure transmitters. Which would be preferreable - compact logix, square root, two press trans, or a differential pressure transmitter? Is there a difference in accuracy?
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Socket communication with Micro820

May 31, 2017, 8:30 am
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Hi everyone !

I have a little project wich involves communication between two Micro820 controllers via TCP/IP. To do that, I started to work with TCP/IP socket.

Within CCW (Connected Components Workbench), I tried to create a new socket instance using the instruction SOCKET_CREATE and set the socket address to 127.0.0.1:21. Basically, my computer through the FTP port. The problem was that it couldn't create a new socket instance (error variable is set to TRUE and status is set to 4, wich I don't know the meaning) because I didn't have a server-side application that listens to TCP/IP socket requests. That said, I found an open source application called SocketTest that listens for TCP/IP socket requests on a specified IP address and port. So, I started a listener on the following address : 127.0.0.1:21, but the error variable is still set to TRUE and status is still set to 4. So, my questions are :

  • Is my IP address OK ?
  • Is my port number OK ?
  • What means the status code 4 ?
  • Is SocketTest doing what I think it does ?
  • Do I need to do something else before using the SOCKET_CREATE instruction ?

Thank you in advance for your help !

SocketCreate.PNG

SocketTest.PNG

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[newbie] help regarding modbus communication

March 17, 2017, 3:14 am
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I need help regarding setting up modbus communication between Allen bradley micrologix 1400 and Schneider altivar312 vfd and rslinx for pc. I am totally stuck with it. 

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1734-VHSC Rate, and Counts

June 1, 2017, 2:22 pm
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Back in the old SLC days the encoder cards had the option to show a rate (hz) and a count.  With the 1734 I can only have one or the other.  I have an encoder on a motor driving a belt conveyor.  I want to know the speed of the conveyor with a decent update rate, as well as an accurate measurement.   With a one second timer comparing the change in counts the calculations aren't very accurate.  The longer we wait between updates the better it gets.  

I'm sure the variation is caused by update rates.

What logic would you guys use to get an feet per min number without just averaging a big sample?

 

 

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FTView V 5.1: How To Creat ODBC Data table?

June 2, 2017, 6:19 am
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Please help with this,

I am having Issue in Creating ODBC Data Table. I have Created SQL Database Successfully and Also Completed ODBC Setup with SQL Server Drivers. But IN FTView 5.1 Database Setup Option There is no Browse Button, when I am selecting ODBC storage format and "ODBC data source:".

If I am giving Manual path in the Block then it shows "Failed to Open ODBC Database.

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Panelview plus 6 600 not communicating with 5/04

June 3, 2017, 9:31 am
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High everyone ,  I need a little advice on setting up DH485 communication with a 5/04 and a panel view plus 600 (2711P-B6C20D8). In the last few days I have read a lot on how too set this up but I have found no resolve. The manual says I  should be using 2711-nc13  cable  from the PVP too channel 0 of the 5/04. I went through and set up a RSlinx OPC server that sees the PLC and the online tags/instructions I have created in my sample program using those tags, setup DH485 serial in rslinx enterprise . But when create and load mer. file to test application I get errors and nothing is changing state on the program I am using.  I am using the DH+ to program PLC . 

  PVP is set for serial DH485 com port 1 node 2 the 5/04 is set too DH485 node 5.

I have similar communication setup for a different piece of equipment at my job that uses the 5/04 and PVP (2711P-B6c5A8) but uses two AIC net  module  that utilizes port 1 with CP3 cable for the PLC and the PVP uses port 1 also but uses 2711-nc13 . I have tried this setup but I have had no success.

Any advice would be helpful.

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Writing from MicroLogix 1400 to a Web server

June 4, 2017, 6:11 am
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We have a project that we need to send data from ml1400 to web server.

Is there  any way doing that ?

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FactoryTalk Transaction Manager

June 4, 2017, 8:11 pm
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We had to migrate over to a different domain and all of a sudden my Transaction Manager asking for a username and password and I have no clue what it is.  Any ideas on what could have caused this and why this is popping up?  

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Micro Logix 1400 and Automation Direct EA9 via Ethernet

June 6, 2017, 7:35 am
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Hello all, I am still fairly new to this forum and PLC's in general. I am trying to connect a EA9 touch panel via Ethernet to an Allen Bradley Micro Logix 1400 PLC. I am using Ethernet over serial because I need the serial connection to program while using the touch panel. I have given the Panel the IP Address 192.168.1.20 with a subnet mask 255.255.255.0 and I have given the PLC the IP address 192.168.1.10 with a subnet mask 255.255.255.0. The panel is not communicating with the PLC and I have very little knowledge on the subject, anyone's help would be greatly appreciated.

The picture on the top is from the PLC and the picture on the bottom is from the C-More program for the panel.

MIcro.PNG

EA9.PNG

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L32E On board temperature sensor

June 7, 2017, 7:52 am
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Good Day,

I have done a quick search and couldn't find any pertinent information, so I was hoping somebody else might have been through this in the past. We are using a 1769 L32E and are trying to record the ambient temperature of the cabinet the PLC is in. We don't want to incur the expense or use the space that an external temperature sensor/thermocouple would entail. Is there an onboard temperature sensor that has a tag available in the ladder?

Thanks,

Jed

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Bit Shift Left BSL

June 7, 2017, 8:26 am
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Can someone explain with an example how the BSL works. There are no examples in the help files. They do explain what each field does, not no example. The manual is worse, the example uses bits that are not even the same in the little diagram they use. Just looking for a simple explanation i can understand.

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Panel view 550

June 7, 2017, 8:30 am
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Hello

I have a panel view 550 communicating with a micrologix 1500 LRP works normally, I need to change some alarm messages in it, but when I try to upload to the PC I can not.
I have no experience with panelview, I have a UIC 1747 and I can see the view panel via RSlinx AB_UIC-1 DH485 STA: 0 COM 5.
But when I use panelbuilder 32 to upload only the error.
Can anybody help me.

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Flex I/O

June 7, 2017, 10:12 am
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1794-ANET, How in the world do I let the PLC use the I/O. I got all the addressing done, but now how does the PLC use the I/O. It seems to do things in AB world you need 15 different manuals to do something. No where is there a setup to map the external Flex IO.  I am able to see the plc and Flex IO in RSLInx, all green lights, but no connection between the two.

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AB 1769 chassis CF card question

June 7, 2017, 12:47 pm
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I have a coworker who swears up and down that he once came across a bit of software that would allow one to mount the cf card of an Allen-Bradley plc on a windows computer while it was still in place in the plc, or at least access the contents of the card. Has anyone ever come across this unicorn?

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Find password from .mer or .apa

June 7, 2017, 1:45 pm
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We have a sterilizer w/ Allen Bradley controls which we bought at auction.  It has a panelview plus 1000.  It came with a CD containing .mer and .apa files.  I was able to load the .mer file via the configuration screen by using the external CF card.  When I run the application, their is a login button in the bottom right which when pushed brings up a user/password screen.  We do not know the user/password for this.  Is it possible to find the password by somehow reviewing the files.  We do not have any software, and do not want to make any changes to the program (rather than changing the password).  I've attached the files in case anyone can help.

Also, was i correct to load the .mer file??  or should I be using the .apa?  I followed these instructions here.

http://www.judiwa.com/2010/10/05/how-to-copy-panelview-plus-application-with-compact-flash-card/

Thanks for your time

PA1525_PVP1000.mer

PA1525_PVP1000.apa

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1756-dhrio with 6 1794-asb address configure help

June 8, 2017, 9:42 am
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hi i try to config 1756-dhrio using channel b with rio setup to 1794-asb module. on the 1794 module only mention that 1747-sn using 3 number of rack but dont mention anything abiut thr 1756-dhrio. i dont know if anyone know how to setup both 1756-dhrio and 6 1794-asb dip switch? i already both of the manual !

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Allen Bradley 5069 Compatlogix communication issue with Red Lion HMI

June 8, 2017, 4:05 pm
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Has anybody tried communicating Allen Bradley 5069 Compact logix PLC with Red Lion HMI ? 

I am unable to communicate them in spite of adding AB tags via L5K file which gives me no error. I am able to see all the tags in Crimsion 3.0 software in development mode. 

However, PLC & HMI are not communicating with each other. I am able to ping to both, using the same program in PLC of which I generated L5K file. 
I think it may have something to do with the driver as 5069 is a new line of PLC Rockwell come out with only in 2016. 

 

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AB

June 8, 2017, 11:09 pm
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Hi, I have a question related to installation of RSlinx software. I already installed the software on my pc. But i cant able to open the software. So, i try to uninstall the software. I cant able to uninstall the software during uninstall its shows the message that "fatal error during installation". How to rectify the problem.

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