# How to read parameter in float format **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [June 3, 2026, 1:11pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825 "2026-06-03T13:11:06Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![brillian.teope](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@brillian.teope](https://forum.inductiveautomation.com/u/brillian.teope)\ **Post date:** [June 3, 2026, 1:11pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/1 "2026-06-03T13:11:06Z")
Hello Everyone, I am a novice to ignition, could anyone help me on how to read tag points from an energy meter? it is setup using modbus tcp driver. [RAYFULL EI920 Series Protocol V1.0.pdf](https://forum.inductiveautomation.com/uploads/short-url/aAZQQWQVCjUpzHh0r3T4WQ4caUx.pdf) (414.7 KB) here it the address list. please help. ---
**Author:** ![Jasmine\_Quick](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jasmine_quick/32/80380_2.png) [@Jasmine\_Quick](https://forum.inductiveautomation.com/u/Jasmine_Quick)\ **Post date:** [June 3, 2026, 1:15pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/2 "2026-06-03T13:15:58Z")
[Modbus Addressing Ignition Manual](https://www.docs.inductiveautomation.com/docs/8.3/ignition-modules/opc-ua/opc-ua-drivers/modbus/modbus-addressing) Use the manual to get one tag working, then roll out to all the others ---
**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:** [June 3, 2026, 1:18pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/3 "2026-06-03T13:18:51Z")
Since the table has address offsets given in hex, you will need zero-based addressing in the device advanced options. ---
**Author:** ![brillian.teope](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@brillian.teope](https://forum.inductiveautomation.com/u/brillian.teope)\ **Post date:** [June 3, 2026, 1:27pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/4 "2026-06-03T13:27:45Z")
Thank you for the quirck reply. really appreciate it. this is what i set on the address configuration. Is the radix 8 the correct to read values in float format or should I use 16? ---
**Author:** ![brillian.teope](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@brillian.teope](https://forum.inductiveautomation.com/u/brillian.teope)\ **Post date:** [June 3, 2026, 1:28pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/5 "2026-06-03T13:28:16Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/d/dddf726cd3755a663c927a4770779dc1de9f5829.png) ---
**Author:** ![brillian.teope](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@brillian.teope](https://forum.inductiveautomation.com/u/brillian.teope)\ **Post date:** [June 3, 2026, 1:29pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/6 "2026-06-03T13:29:20Z")
Also when I increase the "end" value to 200. the tags displays as bad ---
**Author:** ![brillian.teope](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@brillian.teope](https://forum.inductiveautomation.com/u/brillian.teope)\ **Post date:** [June 3, 2026, 1:31pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/7 "2026-06-03T13:31:32Z")
This is what I did. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/f/ff658415a8f750308be9734b420c49d8cae7640a.png) ---
**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:** [June 3, 2026, 1:33pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/8 "2026-06-03T13:33:49Z")
Do not use the address mapping feature. Create OPC tags with manually constructed OPC Item Paths, using the documentation linked above. ---
**Author:** ![brillian.teope](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@brillian.teope](https://forum.inductiveautomation.com/u/brillian.teope)\ **Post date:** [June 3, 2026, 1:33pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/9 "2026-06-03T13:33:52Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/2/4/241e1373d51781e6e4919079f25cd1d7cd9ec691.png)this is confusing to me. I am searching information in the internet trying to learn this ---
**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:** [June 3, 2026, 1:34pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/10 "2026-06-03T13:34:56Z")
Put the high byte and low byte together and convert from hex to decimal. That will give you the decimal address to accompany `IRF`. ---
**Author:** ![brillian.teope](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@brillian.teope](https://forum.inductiveautomation.com/u/brillian.teope)\ **Post date:** [June 3, 2026, 1:35pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/11 "2026-06-03T13:35:48Z")
Could site an example? what to type in the item path? ---
**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:** [June 3, 2026, 1:38pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/12 "2026-06-03T13:38:18Z")
`[deviceName]IRF0` `[deviceName]IRF2` and so on. ---
**Author:** ![brillian.teope](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@brillian.teope](https://forum.inductiveautomation.com/u/brillian.teope)\ **Post date:** [June 3, 2026, 1:39pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/13 "2026-06-03T13:39:55Z")
I am able to read the address 00 04 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/6/c640476cb9b800c2e6f7d062332be66f7f59ff89.png) ---
**Author:** ![brillian.teope](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@brillian.teope](https://forum.inductiveautomation.com/u/brillian.teope)\ **Post date:** [June 3, 2026, 1:42pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/14 "2026-06-03T13:42:09Z")
Value in the energy meter matches the value displayed in ignition ---
**Author:** ![brillian.teope](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@brillian.teope](https://forum.inductiveautomation.com/u/brillian.teope)\ **Post date:** [June 3, 2026, 1:46pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/15 "2026-06-03T13:46:34Z")
How about this one? ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/f/ef40aa7d7cc8d6040ed71b5c44eeee98e45c72f2.png)it 20 bytes length ---
**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:** [June 3, 2026, 2:16pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/16 "2026-06-03T14:16:11Z")
Hex B0C is decimal 2828. So five tags, `[...]1.IRF2828`, `[...]1.IRF2832`, `[...]1.IRF2836`, `[...]1.IRF2840`, and `[...]1.IRF2844`. ---
**Author:** ![brillian.teope](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@brillian.teope](https://forum.inductiveautomation.com/u/brillian.teope)\ **Post date:** [June 3, 2026, 10:01pm UTC](https://forum.inductiveautomation.com/t/how-to-read-parameter-in-float-format/115825/17 "2026-06-03T22:01:35Z")
Thank you very much pturmel, I am beginning to see picture clearly. also how can I display this tag in YY.MM DD HH:mm:SS it is BCD occupying 3 registers. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/d/6dcdbb9dcac9bb63ecd0d5c2c8e0e7adf0a59ccf.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/e/de847d0675465d0ba8d166d2ea2628fc4e987cc7.png) Did I select the correct data type? ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/0/c025b4cd2036f023be1738fe304a4bcf40583e31.png)