# Modbus extended address **URL:** \ **Category:** General Discussion\ **Tags:** ignition79\ **Created:** [May 22, 2017, 2:12am UTC](https://forum.inductiveautomation.com/t/modbus-extended-address/14364 "2017-05-22T02:12:59Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![ThomasL](https://avatars.discourse-cdn.com/v4/letter/t/59ef9b/32.png) [@ThomasL](https://forum.inductiveautomation.com/u/ThomasL)\ **Post date:** [May 22, 2017, 2:12am UTC](https://forum.inductiveautomation.com/t/modbus-extended-address/14364/1 "2017-05-22T02:12:59Z")
I have to interface to DEIF PPU-300 via Modbus. Unable to get the Ignition to support the 6-digit Modbus address. Please advice if Ignition support extended Modbus addressing DEIF information in web [https://www.deif.com/products/ppu-300](https://www.deif.com/products/ppu-300) there is a link to down load the Modbus table. For example, using the Discrete output coil, there is a Modbus address of 46497. In Ignition it will be interpreted as holding register ---
**Author:** ![abishur](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/abishur/32/9096_2.png) [@abishur](https://forum.inductiveautomation.com/u/abishur)\ **Post date:** [May 22, 2017, 2:31am UTC](https://forum.inductiveautomation.com/t/modbus-extended-address/14364/2 "2017-05-22T02:31:39Z")
Check [this page](https://docs.inductiveautomation.com/display/DOC79/Modbus+Addressing) for information on Modbus addressing in Ignition. The short answer is yes, Ignition does 6 digit addressing. You wouldn’t type 46497 as the address though it would be ```auto [Device_Path]C46497 ``` Where Device\_Path is the name you configured in the Ignition Gateway. Also you can specify a mobus Unit ID by “pre-pending” it to you address. So if the Unit id was 3 you would enter ```auto [Device_Path]3.C46497 ``` The C designates the address as a coil or 0x address