Veganic

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Posts posted by Veganic

  1. Posted · Edited by Veganic

    Seconded. Add a PLC to the CC link network and and connect the HMI to the PLC. You will still be limited by the network speed and and data transfer amount. Or look at the GT15-61BT13. https://gb3a.mitsubishielectric.com/fa/en/service/download/sendfile?id=4774&doc_type=doc_loc&saveAs=0&form_submit=View+now

  2. Posted

    Is there anyway to install a replacement GOT without having to connect with a PC? The E1000s could have the progam installed from a USB memory stick. The GOT has a Memory card which performs all sorts of functions but it doesn't seem to be able to backup and install the HMI program. Have I missed something?

  3. Posted

    Thanks for the replies. It was a theoretical question. I have a distant memory from a training course that using the single channel was acceptable if the contactors were in the same enclosure. Independent channels being required if they were remote to give adequate separation and fault tolerance (all other considerations, load etc being equal). All this depends on the risk assessment, Plr, diagnostic coverage, and analylsis of common cause failure, etc, etc, etc. Do you work to ISO 13849-1 in the States?

  6. Posted

    As both options are low-cost you could implement both - then you can let us know which is best RDP, as far as I am aware, would need the software activated at the factory end. VPN depending on the implementation can be relatively easy to no so easy to set-up.

  7. Posted · Edited by Veganic

    I'll have a go at answering this and maybe this will start a debate... Emergency stops. Under what circumstances would you expect the emergency stop to be used? Assuming the emergency stop is local. For the emergency stop to be actuated the operator must be exposed to a hazard. If the operator is exposed to a hazard then this must have been accounted for in the risk assessment. You are almost certainly expecting the operator to be able to operate the emergency stop when encountering the hazard. Is this a reasonable request? Remote emergency stops. Again, under what circumstances would you expect a remote e-stop to be used to protect someone on another machine? Here you are hoping someone at a remote point will recognize another operator is in danger from a remote hazard and react accordingly. Is this reasonable? Guard doors. What is the function of guard doors? To protect the operator from whatever is beyond those doors. What would be the benefit of making a hazard safe that was not behind the door in question? If you agree with and follow the logic above you would come to the conclusion that: 1. there is no need to integrate the emergency stops are you cannot justify their use in any hazardous situation. 2. there is no need to integrate safety guards and doors as they only protect against hazards which are behind those guards. Now I'm going to disagree with my own logic.... The Machinery Directive offers the following assistance: “In the case of machinery or parts of machinery designed to work together, the machinery must be designed and constructed in such a way that the stop controls, including the emergency stop devices, can stop not only the machinery itself but also all related equipment, if its continued operation may be dangerous.” (EHSR’s 1.2.4.4. - Assembly of machinery) General rule: I would integrate emergency stops for a line or group of machines working in concert. Safety guards - a machine stop should be sufficient unless the operator will use them as an emergency stop. This then leaves the practical problem of how to implement this as this has problems of it's own.

  8. Posted · Edited by Veganic

    You have q1 as an output on two networks. The first q1 is over-ridden by the second q1. Try this: CoDeSysTimer.bmp
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  10. Posted

    I've created a key window with a sub-set of the ASCII characters. Can I switch between the user-created key window and the default or another custom key window? Can this be done depending on which base screen is visible, what variable I am changing, or via the PLC program? The manual refers me to sections 2.8 and 2.9 of the functions manual but I can't find the relevant information. I've downloaded a couple of sample applications. These use user-created key windows but do not switch between different ones. I've set Environmental settings -> key window -> basic settings 1st Window Screen number for ASCII = 5 number of screens used for ASCII = 2 I can only use the custom screen and suspect that the choice is default or custom with no way to switch between the two. Can anyone help?

  13. Posted · Edited by Veganic

    IL_FB_CALL_FROM_IL.bmp IL_FB_CALL.bmp It seems to work for me. INSTANCE(); or just INSTANCE; from ST. CAL INSTANCE from IL. What version of CoDeSys are you using? Is the main PLC_PRG in IL?

  14. Posted · Edited by Veganic

    See if this helps... (If not I may be able to take a look on Monday) http://forums.mrplc.com/index.php?showtopic=23909 This is ST so may not help.

  15. Posted

    I'm not sure if I'm right or wrong...but.. 0 will be set for 4 stations occupied at 156kbs - you have one station occupied. Try 5 which I thing is 156kbs and auto set no of stations? Alternatively set the master for 4 stations occupied - I don't know if this will work without a fully populated remote unit. (Also I'd try "remote device station" rather than "remote IO" as well to see what happens.)

  22. Posted

    In E1000 everything is simple. GT14.. not so much. ------------------------------------- I've now tried UltraVNC as this is mentioned in one of the Mitsubishi manuals but I just get " connection failed". As far as I can see the settings are as recommended in the manual. Where do I start trouble-shooting this? I have a GT14.. connected to my LAN. I have a FX3 connected to the RS422 port. I can ping / download / monitor over ethernet. I'm not sure what to try next?

  23. Posted

    Hello all, Has anyone managed to get a VNC client to connect to the VNC server on a GT panel? In my case a GT14... I'm using tight VNC as the viewer. The client seems to be connecting but not showing a screen. If I disconnect the ethernet cable I get a warning that the vnc connection has gracefully closed - so something is definitely connected. This set-up works with the E1000 series.