# How to address S7-1500

**URL:** <https://forum.inductiveautomation.com/t/how-to-address-s7-1500/92293>\
**Category:** General Discussion\
**Tags:** vision\
**Created:** [June 24, 2024, 7:11pm UTC](https://forum.inductiveautomation.com/t/how-to-address-s7-1500/92293 "2024-06-24T19:11:18Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Simen\_Minerd](https://avatars.discourse-cdn.com/v4/letter/s/e274bd/32.png) [@Simen\_Minerd](https://forum.inductiveautomation.com/u/Simen_Minerd)\
**Post date:** [June 24, 2024, 7:11pm UTC](https://forum.inductiveautomation.com/t/how-to-address-s7-1500/92293/1 "2024-06-24T19:11:18Z")

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How to address a tag with address like this: %MD1168 and the data type is REAL.  
The document does not giving any examples, I can address bit, Input Outputs. But real just do not work.  
Anybody done it before?  
Thanks

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**Author:** ![zxcslo](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/zxcslo/32/61610_2.png) [@zxcslo](https://forum.inductiveautomation.com/u/zxcslo)\
**Post date:** [June 25, 2024, 4:45am UTC](https://forum.inductiveautomation.com/t/how-to-address-s7-1500/92293/2 "2024-06-25T04:45:32Z")

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You just put M in front of REAL:  
`MD1168 --> MREAL1168`  
`ID1168 --> IREAL1168`  
`QD1168 --> QREAL1168`  
...

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<div class="post-metadata">

**Author:** ![Simen\_Minerd](https://avatars.discourse-cdn.com/v4/letter/s/e274bd/32.png) [@Simen\_Minerd](https://forum.inductiveautomation.com/u/Simen_Minerd)\
**Post date:** [June 25, 2024, 2:23pm UTC](https://forum.inductiveautomation.com/t/how-to-address-s7-1500/92293/3 "2024-06-25T14:23:09Z")

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In case somebody searching for the same topic.  
S7 Time data type is Double data type in Ignition.  
The address is MDI123  
Unit is in ms, can be scaled to second or minute.