Jump to content

Set up a Master "Master"....


Recommended Posts

 

Scenario :

10 stand alone machines each being controlled via ModbusRTU by a Samba 7

 

Sometimes I want to be able to take control of one, several or all of the machines through a single remote master (Vision 12.10), During this time the touchscreen input of the Samba will be disabled and will become a display only, all commands coming from the Vision.  I would like to do this over a hard wired Ethernet network.

 I have looked at the Remote operator option and it is not what I need as the commands options from the Vision will not be the same those from the Samba and must be able to be synchronized across several machines.  Effectively the Samba is becoming a slave.

 

I would be grateful if someone could confirm whether or not this is possible.

 

Thanks

Link to comment
Share on other sites

  • MVP 2023

This should be mostly possible. As far as I know, there is no "Disable Touchscreen" function in VisiLogic, but if you write the ladder in the Samba correctly you can enable a bit from the V1210 that can prevent any actions coming from the touchscreen. That bit would have to be in series in the ladder with any touch bit on the HMI and you wouldn't be able to use the "Toggle" property of binary elements.

Bottom line, I don't see any major obstacles as long as you can update the program in the Samba.

Link to comment
Share on other sites

Thanks for the fast reply! 

Since I posted the question I started thinking that perhaps it would be easier to use the V1210 to trigger a reboot sequence that would set the Samba to the slave scenario, and when the V1210 has finished, then trigger a reboot back to stand alone.  Effectively have two complete subroutines

 

Link to comment
Share on other sites

  • MVP 2023

Ah. I thought a single Samba was controlling 10 machines. However, same principle applies.

Another issue is that you only have 4 sockets to communicate with the 10 Sambas over ethernet. It's not a problem if you only want to talk to a single Samba at a time or are willing to wait a few seconds for a command to ripple through to multiple Sambas (i.e. connect, send command, close socket, repeat for each Samba - you might have to allow for a few minutes for all 10).

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...