# Gateway Time Sync

**URL:** <https://forum.inductiveautomation.com/t/gateway-time-sync/58936>\
**Category:** Ignition\
**Created:** [April 27, 2022, 3:49pm UTC](https://forum.inductiveautomation.com/t/gateway-time-sync/58936 "2022-04-27T15:49:32Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [April 27, 2022, 6:06pm UTC](https://forum.inductiveautomation.com/t/gateway-time-sync/58936/9 "2022-04-27T18:06:38Z")

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Buy the $500 Time Machines TM2000B. Turn on PTP multicast. Turn on Clock Synchronization in your PLCs (a checkbox in controller properties). For ControlLogix prior to L8x, enable clock sync in the network module connection in your I/O tree, too.

Sit back and watch all your Logix PLCs synchronize to within a few _ **micro** _seconds of each other.

The TM2000B is also an NTP server to which you can point your gateway (and other servers) to get millisecond-grade time synchronization.

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