# Problem connecting to S7-1500

**URL:** <https://forum.inductiveautomation.com/t/problem-connecting-to-s7-1500/115487>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [May 12, 2026, 5:53am UTC](https://forum.inductiveautomation.com/t/problem-connecting-to-s7-1500/115487 "2026-05-12T05:53:36Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![balandeganesh123](https://avatars.discourse-cdn.com/v4/letter/b/7c8e57/32.png) [@balandeganesh123](https://forum.inductiveautomation.com/u/balandeganesh123)\
**Post date:** [May 12, 2026, 5:53am UTC](https://forum.inductiveautomation.com/t/problem-connecting-to-s7-1500/115487/1 "2026-05-12T05:53:36Z")

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![While I am connecting my S7-1500 plc to ignition it's still showing connecting](https://us1.discourse-cdn.com/inductiveautomation/optimized/3X/f/d/fd2b0f0721ced68dc6364efb6ecfebe72770816e_2_690x46.jpeg)

PLC – S7-1500

Problem – I am trying to connect the PLC to Ignition, but it is showing only “Connecting.”

Background – I do not have an available port on the PLC. I added one communication module, cm 1542-1, and configured it (showing healthy). I set an IP address (ping successful, no duplicate ip) and provided the gateway. The correct driver is also selected.

But it is still not connected.

Is there any other reason for this issue?

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**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:** [May 12, 2026, 11:12am UTC](https://forum.inductiveautomation.com/t/problem-connecting-to-s7-1500/115487/2 "2026-05-12T11:12:14Z")

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{ Totally unrelated to other topic. }

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**Author:** ![David\_Stone](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/david_stone/32/79749_2.png) [@David\_Stone](https://forum.inductiveautomation.com/u/David_Stone)\
**Post date:** [May 12, 2026, 8:19pm UTC](https://forum.inductiveautomation.com/t/problem-connecting-to-s7-1500/115487/3 "2026-05-12T20:19:44Z")

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Can you share the settings you are using in the drive to connect with?

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<div class="post-metadata">

**Author:** ![balandeganesh123](https://avatars.discourse-cdn.com/v4/letter/b/7c8e57/32.png) [@balandeganesh123](https://forum.inductiveautomation.com/u/balandeganesh123)\
**Post date:** [May 19, 2026, 12:21pm UTC](https://forum.inductiveautomation.com/t/problem-connecting-to-s7-1500/115487/4 "2026-05-19T12:21:53Z")

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I have only option choose driver

Example:- S7-1500

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<div class="post-metadata">

**Author:** ![Cody\_Morgan](https://avatars.discourse-cdn.com/v4/letter/c/db5fbb/32.png) [@Cody\_Morgan](https://forum.inductiveautomation.com/u/Cody_Morgan)\
**Post date:** [May 19, 2026, 12:30pm UTC](https://forum.inductiveautomation.com/t/problem-connecting-to-s7-1500/115487/5 "2026-05-19T12:30:07Z")

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If you prefer to use the new Siemens Enhanced driver, you need to install the module for it. It is included in the installer, but is not installed by default. The license for the Siemens enhanced driver is sold separately.

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<div class="post-metadata">

**Author:** ![balandeganesh123](https://avatars.discourse-cdn.com/v4/letter/b/7c8e57/32.png) [@balandeganesh123](https://forum.inductiveautomation.com/u/balandeganesh123)\
**Post date:** [May 19, 2026, 5:28pm UTC](https://forum.inductiveautomation.com/t/problem-connecting-to-s7-1500/115487/6 "2026-05-19T17:28:37Z")

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![648f8de43b7c274addd11c7bcba41215b368b3c55677e38aa862c3cd9fe89e3f](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/0/700abec570cc85e8e96e776f3573b435e7988446.png)

 ![d34b8d2b2833153ac6dde4dff2aca7b96ec0a400b71ef1ef24562073b2c59452](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/1/a1090e4aeb4aa9afb8c790864c6e10f1dce4235d.png)

Already one plc I have connected to server over this driver but in my second plc I have installed cm1542-1 module because port not available.

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<div class="post-metadata">

**Author:** ![balandeganesh123](https://avatars.discourse-cdn.com/v4/letter/b/7c8e57/32.png) [@balandeganesh123](https://forum.inductiveautomation.com/u/balandeganesh123)\
**Post date:** [May 20, 2026, 7:18am UTC](https://forum.inductiveautomation.com/t/problem-connecting-to-s7-1500/115487/7 "2026-05-20T07:18:30Z")

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What next step should I take

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<div class="post-metadata">

**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:** [May 20, 2026, 8:18am UTC](https://forum.inductiveautomation.com/t/problem-connecting-to-s7-1500/115487/8 "2026-05-20T08:18:08Z")

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Show as the setting for Siemens driver (the three dots at the right)

[https://docs.inductiveautomation.com/docs/8.3/ignition-modules/opc-ua/opc-ua-drivers/siemens/siemens-drivers](https://docs.inductiveautomation.com/docs/8.3/ignition-modules/opc-ua/opc-ua-drivers/siemens/siemens-drivers)

where you set the IP, rack nr., cpu slot nr., port,...