# Connecting to ModBus

**URL:** <https://forum.inductiveautomation.com/t/connecting-to-modbus/7303>\
**Category:** Ignition\
**Created:** [September 23, 2013, 5:04pm UTC](https://forum.inductiveautomation.com/t/connecting-to-modbus/7303 "2013-09-23T17:04:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mikehill100](https://avatars.discourse-cdn.com/v4/letter/m/bcef8e/32.png) [@mikehill100](https://forum.inductiveautomation.com/u/mikehill100)\
**Post date:** [September 23, 2013, 5:04pm UTC](https://forum.inductiveautomation.com/t/connecting-to-modbus/7303/1 "2013-09-23T17:04:00Z")

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Hello!

I am working in an environment with several applications, each connecting to the same modbus network.

My question is whether it is wiser to create a separate connection for each application, or point them all using the same connection.

It would be a little more convenient for us to use different connections, because the PLCs are being planned to be swapped and we could just re-point the connections as they come, but on the other hand we are concerned about what overhead will come with each connection.

Any advice appreciated!

Thanks,

Mike

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**Author:** ![Robert.McKenzie](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/robert.mckenzie/32/4134_2.png) [@Robert.McKenzie](https://forum.inductiveautomation.com/u/Robert.McKenzie)\
**Post date:** [September 24, 2013, 3:37pm UTC](https://forum.inductiveautomation.com/t/connecting-to-modbus/7303/2 "2013-09-24T15:37:09Z")

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I’m not really sure what you are asking. Ignition requires that you make a connection to each Modbus device that you want to interact with. Any applications (other software?) would have to make their own connections to the devices.