# Device connection-modbus:how to set the time interval for issuing the request **URL:** \ **Category:** General Discussion\ **Created:** [October 10, 2020, 8:15am UTC](https://forum.inductiveautomation.com/t/device-connection-modbus-how-to-set-the-time-interval-for-issuing-the-request/39561 "2020-10-10T08:15:20Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![huangbin](https://avatars.discourse-cdn.com/v4/letter/h/e9a140/32.png) [@huangbin](https://forum.inductiveautomation.com/u/huangbin)\ **Post date:** [October 10, 2020, 8:15am UTC](https://forum.inductiveautomation.com/t/device-connection-modbus-how-to-set-the-time-interval-for-issuing-the-request/39561/1 "2020-10-10T08:15:21Z")
Because of the data traffic limit, I want to change the time interval between sending the data request, but I don’t see the setting option in the setting bar. How should I set it? ---
**Author:** ![BenKearney](https://avatars.discourse-cdn.com/v4/letter/b/b19c9b/32.png) [@BenKearney](https://forum.inductiveautomation.com/u/BenKearney)\ **Post date:** [October 10, 2020, 8:59am UTC](https://forum.inductiveautomation.com/t/device-connection-modbus-how-to-set-the-time-interval-for-issuing-the-request/39561/2 "2020-10-10T08:59:00Z")
This is also something that’s important for me, but I don’t think it’s currently an option unfortunately. Unless anyone can tell us otherwise? ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [October 10, 2020, 12:48pm UTC](https://forum.inductiveautomation.com/t/device-connection-modbus-how-to-set-the-time-interval-for-issuing-the-request/39561/3 "2020-10-10T12:48:20Z")
You can control the frequency of the polling in general by changing the rate of the tag group or scan class the OPC tags for this device belong to. There is no option to set what is commonly called the “inter-request delay”, though, which is an artificial delay inserted between subsequent requests, usually only needed for serial lines. ---
**Author:** ![BenKearney](https://avatars.discourse-cdn.com/v4/letter/b/b19c9b/32.png) [@BenKearney](https://forum.inductiveautomation.com/u/BenKearney)\ **Post date:** [October 10, 2020, 1:49pm UTC](https://forum.inductiveautomation.com/t/device-connection-modbus-how-to-set-the-time-interval-for-issuing-the-request/39561/4 "2020-10-10T13:49:22Z")
Is it something that you’d consider adding? I’ve worked with a lot of (unavoidable) devices that officially only support one request every xxx ms. ---
**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:** [December 8, 2020, 8:53pm UTC](https://forum.inductiveautomation.com/t/device-connection-modbus-how-to-set-the-time-interval-for-issuing-the-request/39561/5 "2020-12-08T20:53:46Z")
I've implemented this inter-request delay in my new Advanced Modbus Module's Client driver type. Beta announcement here: > [@Automation Professionals' Advanced Modbus Driver](http://forum.inductiveautomation.com/t/automation-professionals-advanced-modbus-driver/41312): > > Automation Professionals is pleased to announce the first beta for its Advanced Modbus Driver, for Ignition version 7.9. Key features: Server mode, emulating one or more slave [devices](https://www.automation-pros.com/modbus/UserManual.pdf), using any of the three typical connection types, including simultaneous connections of multiple types. Client mode, incorporating all three connection modes in one driver. Support for Modbus Function Codes 20 and 21, File Records. Configure protocol tweaks for troublesome devices per slave unit, enabling suppor…