Mushu

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Posts posted by Mushu

  2. Posted

    Thank you all for your answers. Contr_Conn, I follow your instructions, and I had already the modules in the I/O configuration as BobLfoot indicated (I was trying to find the Contr_Conn's instructions for RSNetworx, jajaja, until I realize Contr_Conn it was your nickname, not some RSLogix or RSNetworx function, ) And I have still the same error. Please find attached my ControlNet and Control Logix files. Rpraveenkom, I can't open the link that you put. Thanks, Mushu SGP_ControlNet.zip Trial_ControlNet_Small.ACD

  3. Posted

    Hi all, I am new with Control Logix and Control Net. I have a project with a Logix 5561, a control net scanner, 1756-CNB/D and a Control Net adapter in a PLC5 rack (1771-ACN15 I/O adapter). Could anybody to help me how to configure the communications, please? The error at the I/O adapter is: Connection not scheduled. I have tried to configure it with ControlNetworks for CN, but I haven't had any luck. Thanks, Mushu

  4. Posted

    Hi all, I am new with Control Logix, and I am still trying to get used to the tagnames. I understand than if you can use long tagnames (describing what they are for) use them. But I think we should keep small tagnames when communicating with SCADA packages, to optimise the communications. I found this document very helpful: Publication 1756-PM001I-EN-P - January 2007 (Logix 5000 Controllers Common Procedures) I was really surprised when I read that any tag uses at least 32 bits, and they recommend to use DINT instead INT or SINT; not only from the memory point of view, as well for the resorces used to convert INT into DINT, as many of the calculations use DINT. Do you know where could I find more information how to optimize the programme, the memory, the scan time and the communication? I may not find problems, but I would like to keep the good practises. Thanks, Mushu

  5. Posted

    you can read it from the PLC, or you can set it from the configuration mode; you will open a windows enviroment, and from there you have an icon to open the window to change the date and the time. If you don't read it from the PLC, everytime you power the HMI the time and date is reset.

  6. Posted

    Hi, I received this answer in another post (Thank you Muthu, ): SIMATIC Net Configuration (for OPC Server) 1.Station Configurator 1.1 Open Station Configurator from start menu 1.2 Add OPC Server at index 1 2.Configuration Console 2.1 Open Configuration Console from start menu 2.2 Change “Mode of the module” as “Configured mode” and “index” to “5” 3.SIMATIC NCM PC Wizard 3.1 Open SIMATIC NCM PC Wizard from start menu 3.2 “Create a new project and configuration” 3.3 “Create a copy of the local PC Station” 3.4 “Edit network and connection Configuration” 3.5 drag and drop “PG/PC” from right menu tree to the work space 3.6 right click on “PG/PC” and click “Object Properties” 3.7 In “Interfaces” tag, add “Ind. Ethernet” by clicking “New..” button 3.8 Key in the MAC address of the S7 PLC 3.9 Click on “OPC Server” in the station 3.10 Double click in the empty row under ‘Local ID’ 3.11 Key in MAC address of the S7 PLC 3.12 Click on “Address Details” Specifies the physical location of the PLC Ethernet module (Rack/Slot) 3.13 Download all the configurations from the menu PLC => Download to current project => Connections and Gateways 3.14 Select “Station” and download, from the menu PLC => Download to current project => Selected Stations It was exactly what I needed. I hope it will help somebody else too.

  7. Posted

    Hi, I am trying to communicate an intouch application with a CPU-315-2DP and a CP343-1. We have bought the new version of SIMATIC NET, and when I tried to configurate my PC I discovered that it is very different compared with the older version. We have installed SIMATIC NET and the Wonderware I/O driver "Simatic S7". Please, anybody could help me to configurate the PC? I have this two manuals: Industrial Communication with PG/PC and SIMATIC NET Commissioning PC Stations - Manual and Quick Start but I have still problemsss!!!! Thank you.

  8. Posted

    Hi, I need to syncronize the PLC date andtime with the SCADA date and Time. I will get 6 integers (my Set Points) and I have to set the PLC clock. I know how to check if a syncronization is needed. But I don't know how to get the Date_and_Time data type needed for the SFC0 (SET_CLK). I have thought to convert SP Integers into BCD and them move into a Date_and_time variable, but I don't know how to calculate the day of the week. Thanks

  9. Posted

    Thank you to eveybody. I have been in a commissioning for a while, so I could not answer earlier. Finally we lost the project. Don't ask me why, my boss, the customer, the customer's boss, third companies??? I don't know. As far as I know: the solution using a Siemens PLC as a bridge between the Allen Brandley PLC and the other Siemens PLC was to expensive, from the hardware point of view. The customer asked to convert the existing AB into a Siemens, so this would involve a higher cost in programming and test. I think the customer chose this solution. Thanks anyway.

  10. Posted

    Hi Kothy, I think when you move an integer (16 bits) into a float (32 bits) then two integers are move (32 bits) so when you move: -16874 in N7:0 register F8:0 you are moving: N7:0 and N7:1 I don't have many time now, but then with that bits you can read the float (mind that some will be the exponent, and some the mantise) I hope I left it clear enough.

  11. Posted

    I am receiveing the information piece by piece, so I am discovering new things along the investigation. At the beginning I though as well it was a S7-300. They prepared their PLC to communicate through Ethernet, but the Allen Bradley Ethernet protocol only works for Allen Bradley products, so their solution is not good for our PLC. I will let you know how this story finishes. Thank you.

  12. Posted

    Thank you to everybody. I am going to think about all your answers, and I will let you know what we decide. The Siemens PLC is a CPU 416. They have not told me if it is a CPU 416-2 or 3. I think that the company that it programme the Siemens does not want to change their PLC, so they don't want to communicate through PROFIBUS. They don't care how much cost to any third party. If it is a CPU 416-2, and both ports are used. I don't think there are used all the nodes (125). Do you know if there would be any problem to connect both PLC extending one of the PROFIBUS networks (of course, if there is not distance issue)?

  14. Posted

    I have been talking with the company who programmed the Siemens PLC and they have a solution: Install a new S7-315-2DP with a Ethernet CP343-1 and a Profibus card in the Allen Bradley PLC. So the Allen Bradley PLC would communicate by PROFIBUS with the S7-315-2DP, and then this PLC would communicate with the Siemens PLC by Ethernet (there is not PROFIBUS port available). Do you know another solution????

  15. Posted · Edited by Mushu

    One of the PLC controls the CIP center and the other controls some part of the process. During CIP they need to know if they are ready, one command valves (they are connected to the other PLC), and to know if the valves are opened. My first suggestion was: Harwire, through Digital I/O, . But there are too many signals to be interchanged.

  16. Posted

    I have been talking with Allen Bradley technical support and he told me that Ethernet would not be a good idea. Allen Bradley Ethernet uses their own protocol to communicate with Allen Bradley products; and the technical support doubted that the Siemens Ethertnet cards will able to communicate with them. So they think PROFIBUS would be a better solution. and the Siemens PLC prefers Ethernet. What do I do?

  20. Posted

    Hi, I have post this in the Allen Bradley post, it is very urgent. We have a plant with an Allen Bradley PLC; this is communicating with an Intouch trhough RS-232. A new machine is going to be implemented in the plant; it has a Siemens S7-300 PLC. The programme is ready to communicate through Ethernet (functions "AG_SEND" and "AG_RECV" are used). I asked to some colleges and they think the existing PLC will not communicate properlly with Ethernet. Do you have any idea how could it be done? I am completly lost in this. thanks

  21. Posted

    Hi, We have a plant with an Allen Bradley PLC; this is communicating with an Intouch trhough RS-232. A new machine is going to be implemented in the plant; it has a Siemens S7-300 PLC. The programme is ready to communicate through Ethernet (functions "AG_SEND" and "AG_RECV" are used). I asked to some colleges and they think the existing PLC will not communicate properlly with Ethernet. Do you have any idea how could it be done? I am completly lost in this. thanks

  22. Posted

    Hi, I would like to know how could I detect on my SCADA that an Allen Bradlley SLC5/05 stopped. at the moment i am using S:1/13, but I would need to shutdown (go to the sequence number 0) my system when this bit is on. the problem is that when the bit is on: PLC is stopped, and one the bit is reset, my system does not go to cero, because the bit is false. thanks, Mushu