# S7 1200 G2 Analoge input communication problem **URL:** \ **Category:** Support\ **Created:** [December 14, 2025, 4:48pm UTC](https://community.factoryio.com/t/s7-1200-g2-analoge-input-communication-problem/4456 "2025-12-14T16:48:05Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Alex](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@Alex](https://community.factoryio.com/u/Alex)\ **Post date:** [December 14, 2025, 4:48pm UTC](https://community.factoryio.com/t/s7-1200-g2-analoge-input-communication-problem/4456/1 "2025-12-14T16:48:05Z")
Hello I have a problem bringing data to plc sim. Digital I/O s work aswell as the output from plcsim to factory io but from factory io to plcsim doesn’t work. If I switch plcsim into stop and back on i get the correct value in my variable but from there on it doesn’t update. ---
**Author:** ![adriana.silva](https://dub1.discourse-cdn.com/flex017/user_avatar/community.factoryio.com/adriana.silva/32/752_2.png) [@adriana.silva](https://community.factoryio.com/u/adriana.silva)\ **Post date:** [December 15, 2025, 9:11am UTC](https://community.factoryio.com/t/s7-1200-g2-analoge-input-communication-problem/4456/2 "2025-12-15T09:11:58Z")
Hello @Alex, I’d like to clarify what you said just so I’m sure I understand your problem. The signals from PLCSIM are reaching Factory I/O, but the signals from Factory I/O are not reaching PLCSIM. Is that it? Which TIAPortal version are you using? What PLCSIM are you using? Is it TIAPortal’s PLCSIM or is it PLCSIM Advanced? What PLCSIM version are you using? Are you simulating an S7-1200 or S7-1500 PLC? Which Factory I/O version are you using? ---
**Author:** ![Alex](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@Alex](https://community.factoryio.com/u/Alex)\ **Post date:** [December 15, 2025, 6:29pm UTC](https://community.factoryio.com/t/s7-1200-g2-analoge-input-communication-problem/4456/3 "2025-12-15T18:29:34Z")
bool signals are reaching PLCSIM but real or word aren’t. Im Using TIA V20 PLCSIM V20 I’m simulating S7-1200 G2 it does work with S7-1200 but not with the G2 Factory IO 2.5.10 ---
**Author:** ![adriana.silva](https://dub1.discourse-cdn.com/flex017/user_avatar/community.factoryio.com/adriana.silva/32/752_2.png) [@adriana.silva](https://community.factoryio.com/u/adriana.silva)\ **Post date:** [December 16, 2025, 3:55pm UTC](https://community.factoryio.com/t/s7-1200-g2-analoge-input-communication-problem/4456/4 "2025-12-16T15:55:07Z")
Hi @Alex, I’ve run some tests on my end, and I found the same issue. We’re not sure what’s causing this, so we’ll investigate it a bit further, and I’ll let you know once we make some progress. In the meantime, please try to use the S7-1200 as a workaround. ---
**Author:** ![adriana.silva](https://dub1.discourse-cdn.com/flex017/user_avatar/community.factoryio.com/adriana.silva/32/752_2.png) [@adriana.silva](https://community.factoryio.com/u/adriana.silva)\ **Post date:** [December 17, 2025, 11:17am UTC](https://community.factoryio.com/t/s7-1200-g2-analoge-input-communication-problem/4456/5 "2025-12-17T11:17:14Z")
Hello @Alex, We’ve determined the cause of the issue. The S7-1200 G2 requires additional IO modules, and the Main block is missing a Function Block to access the new modules. We’ve updated the template to include these changes and made it ready for use. I’ll share it with you here so you can use it. We will later update our documentation to include the new template. If you find any other issues, please let me know. [FactoryIO\_Template\_S7-1200\_G2\_V20.zip](https://community.factoryio.com/uploads/short-url/bvPYL4sHF0qFn3EsfE8kLF8TDdZ.zip) (885.6 KB) ---
**Author:** ![Alex](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@Alex](https://community.factoryio.com/u/Alex)\ **Post date:** [December 17, 2025, 8:49pm UTC](https://community.factoryio.com/t/s7-1200-g2-analoge-input-communication-problem/4456/6 "2025-12-17T20:49:17Z")
Perfect thank you very much for the fast solution.