# Error when connecting to Delta PLC Simulator via Modbus TCP **URL:** \ **Category:** Ignition\ **Tags:** perspective\ **Created:** [December 14, 2023, 1:06pm UTC](https://forum.inductiveautomation.com/t/error-when-connecting-to-delta-plc-simulator-via-modbus-tcp/83139 "2023-12-14T13:06:02Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Waleed\_Raza](https://avatars.discourse-cdn.com/v4/letter/w/ad7895/32.png) [@Waleed\_Raza](https://forum.inductiveautomation.com/u/Waleed_Raza)\ **Post date:** [December 14, 2023, 1:06pm UTC](https://forum.inductiveautomation.com/t/error-when-connecting-to-delta-plc-simulator-via-modbus-tcp/83139/1 "2023-12-14T13:06:03Z")
Hello everyone, I am new to Ignition Scada. I do not have PLC physically. I have connected simulator of Delta PLC ISPsoft with ignition scada. I have connected via MODBUS TCP. I also got all tags in designer. But these tags are not showing values of 1 or 0 even after connecting with path.... ![error](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/a/8a7a1e189de6334d90db7b88d3fd94c6c7e83eed.png) ![tag bad](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/1/61724c967d361f65fa41095fcf5cbddf67db3bdf.png) ![tag detail](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/3/d3ddd03e3d3ecdc3142b316b9e788f015c3cc447.png) ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [December 14, 2023, 2:14pm UTC](https://forum.inductiveautomation.com/t/error-when-connecting-to-delta-plc-simulator-via-modbus-tcp/83139/2 "2023-12-14T14:14:23Z")
`[Delta]Y0` isn't a valid Modbus address. Try something like: - `[Delta]HR1` - `[Delta]1.HR` See [Modbus Addressing - Ignition User Manual 8.1 - Ignition Documentation](https://docs.inductiveautomation.com/display/DOC81/Modbus+Addressing) ---
**Author:** ![Waleed\_Raza](https://avatars.discourse-cdn.com/v4/letter/w/ad7895/32.png) [@Waleed\_Raza](https://forum.inductiveautomation.com/u/Waleed_Raza)\ **Post date:** [December 15, 2023, 9:43am UTC](https://forum.inductiveautomation.com/t/error-when-connecting-to-delta-plc-simulator-via-modbus-tcp/83139/3 "2023-12-15T09:43:43Z")
> [@Kevin.Herron](#): > > [Delta]HR1 I have tried all of below addresses in different formats but still no success. ![path1](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/a/7aacaf000e65590f15cdbcaa33f2159c23226935.png) ![path2](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/4/e44ee5ec332983fce2c097621fa7bd3ec8fee1b5.png) ![coil](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/f/9f6eeba54fb71b38f02fdd8164a1462bc87b13aa.png) ---
**Author:** ![Waleed\_Raza](https://avatars.discourse-cdn.com/v4/letter/w/ad7895/32.png) [@Waleed\_Raza](https://forum.inductiveautomation.com/u/Waleed_Raza)\ **Post date:** [December 15, 2023, 12:05pm UTC](https://forum.inductiveautomation.com/t/error-when-connecting-to-delta-plc-simulator-via-modbus-tcp/83139/4 "2023-12-15T12:05:14Z")
I have also tried these modbus addresses which are specific to each PLC types. Like HR4096, C2048, C1280. But no success. ![addresses](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/5/e5ebc366320b46ad0a43110a02b38a12be645dc6.png) ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [December 15, 2023, 12:14pm UTC](https://forum.inductiveautomation.com/t/error-when-connecting-to-delta-plc-simulator-via-modbus-tcp/83139/5 "2023-12-15T12:14:24Z")
Do you have any other Modbus client that can connect and read? ---
**Author:** ![Waleed\_Raza](https://avatars.discourse-cdn.com/v4/letter/w/ad7895/32.png) [@Waleed\_Raza](https://forum.inductiveautomation.com/u/Waleed_Raza)\ **Post date:** [December 15, 2023, 12:18pm UTC](https://forum.inductiveautomation.com/t/error-when-connecting-to-delta-plc-simulator-via-modbus-tcp/83139/6 "2023-12-15T12:18:55Z")
No, I am trying to connect simulator with Ignition scada. And i think both will have same local ip address but different port? ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [December 15, 2023, 12:27pm UTC](https://forum.inductiveautomation.com/t/error-when-connecting-to-delta-plc-simulator-via-modbus-tcp/83139/7 "2023-12-15T12:27:33Z")
Try addressing unit/slave id 1 instead of 0. Try with another software like Modscan or Modpoll. ---
**Author:** ![taguililla](https://avatars.discourse-cdn.com/v4/letter/t/f9ae1b/32.png) [@taguililla](https://forum.inductiveautomation.com/u/taguililla)\ **Post date:** [August 16, 2024, 9:37am UTC](https://forum.inductiveautomation.com/t/error-when-connecting-to-delta-plc-simulator-via-modbus-tcp/83139/8 "2024-08-16T09:37:51Z")
Hello. What is the ID for DVP Simulator? Thank you. Best regards.