gromit

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About gromit

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  1. Is version 12.038 CompactLogix L35E (ser A)  firmware compatible with 1769-L35E COMPACTLOGIX 5335E CONTROLLER. CONTROLLER VERSION = 12.22 ? If not, where can I get the appropriate firmware? Thanks.  
  2. ControlLogix Controller & Program tags

    Thanks Armadillo852 and jncontrols. Sounds like a plan...I will move (cut & paste) the tags to the controller tags area and download the program, while in PROGRAM mode. All efforts complete without incident. Thanks for the assist..
  3. ControlLogix Controller & Program tags

    Thanks, jncontrols. I understand your recommendation and its intent; however, I was hoping for a more efficient solution. So, if the tags can't be cut from the program tags area and then pasted in the controller tags area while in RUN mode, could the tags be copied from the program tags area, then pasted in the controller tags area, and finally deleted from the program tags area while in RUN mode? Thanks for your feedback.
  4. Can ControlLogix Program tags be moved to Controller tags area while in run mode, via cut & paste or some other means? Also, is it true that only tags in the controller tags area can be accessed via CiTect HMI and other HMIs? Thanks.
  5. SLC5/05 1747-L553 intermittent loss of communication Has anyone ever experience an intermittent loss of communication between the SLC5/05 1747-L553 PLC and a computer which can only be recovered by cycling power on the PLC? We are experiencing a communication loss sometimes once a week, sometimes more...and it is occurring on three different PLCs. A PLC specialist or contractor claims that the loss of communication can be caused by the PLC firmware. The specs from the PLC are as follows: PLC model: SLC5/05 1747-L553   CAT: 1747-L553 SER C PROC REV 5   OS# 1747-OS501 SER C FRN 9   Has anyone experienced this type of loss, and if so what would be the best course of action to take? Is there a sniffer that can be employed to determine if the comms loss is caused by the PLC, by the computer, or by something else. Please advise. Thanks!
  6. Can the following functions be achieved in the SLC5/05 processor? 1.Mean Value over time      a.determines the mean value of the input value X with a moving time window T. 2.Differentiator     a.used to generate a time derivation of an analog input 3.Running Average 4.Rate of Change monitor
  7. Can the following functions be achieved in the SLC5/05 processor? 1.Mean Value over time      a.determines the mean value of the input value X with a moving time window T. 2.Differentiator     a.used to generate a time derivation of an analog input 3.Running Average 4.Rate of Change monitor
  8. When communicating between SLC5/05 and a third party, we are receiving sporadic timeout alarms...by sporadic, I mean it could be hours to days apart. The program scan time is very short…only 20 msec maximum & 10 msec average. Do you have any suggestions for resolving this issue? Also, is there a way to determine communication rate or communication scan time? Thanks!
  9. SLC5/04 DF1 port

    Unable to communicate to SLC5/04 DF1 port using null modem cable, even after resetting processor to factory defaults by shorting the VBB & GND pins or by shorting the capacitor. I can connect to the processor and download a program via the 1784-U2DHP adapter, but still can't connect to the DF1 port. To prove my cable and USB to serial works, I move it to another SLC PLC and it communicates properly. I spoke with Rockwell support at length and they say that the port is bad and there is nothing else that can be done. Does anyone know of any other steps that I could take to get the DF1 port to work? Thanks.
  10. Mr. Lloyd, I was wanting to determine if I can follow structured text logic online or not in order to identify why particular outputs aren't activating and such. Would also like to know if structured text logic can be modified online...and if so, does it follow the online edits protocol that ladder logic and FBE follows?
  11. Thanks McNasty. . .  I failed to mention that Rockwell said that "The CCP154 has been move to PDO status; Private Delivery Only. Which means there are no open enrollment courses offered." So, I was hoping that someone might know of another vendor who offers the course.
  12. I am very knowledgeable with RSLogix5 and RSLogix500, but want to become well-versed with RSLogix5000 advanced algorithms, strategies, and program types—(Ladder, Sequential Function Charts, Function Block Diag, Structured Text), and motion control, such as servo-controllers. . . mostly interested in structured text. I’m also interested in the nuances of RSLogix5000, ControlLogix & CompactLogix regarding design, on-line programming, and off-line programming, etc. Can anyone recommend a course or courses that cover this subject matter? Thanks!
  13. The original post was kinda scattered, and I got no responses, so I tried to get more to the point on this repost as follows. 1) Where can I get documentation on “Program Scope Tags”. 2) Our driver is currently using the documented way to discover and read/write to tags from Logix5000 Data Access (1756-pm020_-en-p.pdf). We specifically use the Symbolic Segment Address Method to read/write to tags. This involves encoding the human-readable tag name which can result in rather lengthy requests when tag names are verbose. We would like to be able to request atomic and structured tags using the Symbolic Instance ID Method, but the document we have has few examples of how to do it.  3) Is there another document with more examples of using Symbolic Instance ID’s when making CIP service requests?  4) Can we also get examples of how to decode non user-defined structure attribute messages. The above document does not cover these types. Further, it says to not deal with any tags that are not user-defined. 5) Can you provide documentation on time set/read methods for CIP.  6) Do Time Synchronization methods exist and can an external client read and write the internal time on a Logix5000 device using Explicit Connected Messaging (CIP)? Please assist. Thanks.
  14. Thanks...I hope to put it through the paces today and will report back. Thanks.