We are facing a project where we need to poll data from 2000 S7 plc's.
Does anyone have an experience with large numbers like this.
The S7 driver (according to help file) support 512 plc's. Is it technically possible to start 4 S7 drivers ?
(Each PLC only contains 10 I/O's. The poll-rate is not critical)
has anyone done this ?
Kind regards
Frenk Mulder
How to connect 2000 S7 plc\'s (each having 10 I/O)
- fmulder
- Posts:330
- Joined: Wed Feb 03, 2010 9:46 am
How to connect 2000 S7 plc\'s (each having 10 I/O)
- leoknipp
- Posts:2928
- Joined: Tue Aug 24, 2010 7:28 pm
Re: How to connect 2000 S7 plc\'s (each having 10 I/O)
Hello Frenk,
the keyword deviceOffset can be used to define the offset for the PLC-number for every S7-driver.
From the technical point of view it should be possible to start more than 2 drivers with the according settings for the config entry deviceOffset.
We have never tested if more than two S7 drivers are working correctly in the same project.
Therefore this solution is officially not supported.
Maybe you can use a OPC server which is able to connect 2000 S7-PLCs at the same time instead of a native S7 communication.
Best Regards
Leopold Knipp
Senior Support Specialist
the keyword deviceOffset can be used to define the offset for the PLC-number for every S7-driver.
From the technical point of view it should be possible to start more than 2 drivers with the according settings for the config entry deviceOffset.
We have never tested if more than two S7 drivers are working correctly in the same project.
Therefore this solution is officially not supported.
Maybe you can use a OPC server which is able to connect 2000 S7-PLCs at the same time instead of a native S7 communication.
Best Regards
Leopold Knipp
Senior Support Specialist
- leoknipp
- Posts:2928
- Joined: Tue Aug 24, 2010 7:28 pm
Re: How to connect 2000 S7 plc\'s (each having 10 I/O)
Hello,
just an additional information.
One driver can only connect up to 256 S7-PLCs.
There is limitation in our driver and the panels/scripts which limits the number of possible S7-PLCs in one project to 512, even if starting several drivers.
Best Regards
Leopold Knipp
Senior Support Specialist
just an additional information.
One driver can only connect up to 256 S7-PLCs.
There is limitation in our driver and the panels/scripts which limits the number of possible S7-PLCs in one project to 512, even if starting several drivers.
Best Regards
Leopold Knipp
Senior Support Specialist