# Best RTU for a Demo Ignition (Easiest to bring into the GW)

**URL:** <https://forum.inductiveautomation.com/t/best-rtu-for-a-demo-ignition-easiest-to-bring-into-the-gw/83437>\
**Category:** General Discussion\
**Created:** [December 21, 2023, 5:51pm UTC](https://forum.inductiveautomation.com/t/best-rtu-for-a-demo-ignition-easiest-to-bring-into-the-gw/83437 "2023-12-21T17:51:47Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Matrix\_Engineering](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/matrix_engineering/32/19781_2.png) [@Matrix\_Engineering](https://forum.inductiveautomation.com/u/Matrix_Engineering)\
**Post date:** [December 22, 2023, 6:01pm UTC](https://forum.inductiveautomation.com/t/best-rtu-for-a-demo-ignition-easiest-to-bring-into-the-gw/83437/6 "2023-12-22T18:01:32Z")

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Cool, if you want to write to the setpoint to dynamically change the pulse width of the heartbeat, you can do that:

> [@Moxa IoLogik, write to pulse output on width, off width](https://forum.inductiveautomation.com/t/moxa-iologik-write-to-pulse-output-on-width-off-width/62700):
>
> I am using an E1212 to simulate pulses from a power meter (E1212 DO drives SSR). Can the ON width and OFF width, as pictured, be written to via ModBUS TCP? @pturmel @Chris_Taylor

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