# CLICK PLC tags not being recognized on ignition **URL:** \ **Category:** General Discussion\ **Created:** [March 18, 2021, 6:51pm UTC](https://forum.inductiveautomation.com/t/click-plc-tags-not-being-recognized-on-ignition/44645 "2021-03-18T18:51:31Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![pablo](https://avatars.discourse-cdn.com/v4/letter/p/ad7895/32.png) [@pablo](https://forum.inductiveautomation.com/u/pablo)\ **Post date:** [March 18, 2021, 6:51pm UTC](https://forum.inductiveautomation.com/t/click-plc-tags-not-being-recognized-on-ignition/44645/1 "2021-03-18T18:51:31Z")
my Click PLC is saving a value on C1 (Contact Normally Open Bit memory address). From Ignition Designer I can’t retrieve the value on the OPC tag. I tried the following combinations with no luck: Boolean | [Click\_PLC]HR1 | [Click\_PLC]DI1 | [Click\_PLC]C1 | [Click\_PLC]IR1 | Byte | [Click\_PLC]HR1 | [Click\_PLC]DI1 | [Click\_PLC]C1 | [Click\_PLC]IR1 | Ignition OPC UA Server is connected Click\_PLC device is connected via Modbus TCP Resource used: [https://docs.inductiveautomation.com/display/DOC80/Modbus+Addressing#ModbusAddressing-ManuallyAddressingaModbusDevice](https://docs.inductiveautomation.com/display/DOC80/Modbus+Addressing#ModbusAddressing-ManuallyAddressingaModbusDevice) Any help would be greatly appreciated. Best, Pablo ---
**Author:** ![brandon1](https://avatars.discourse-cdn.com/v4/letter/b/ea666f/32.png) [@brandon1](https://forum.inductiveautomation.com/u/brandon1)\ **Post date:** [March 18, 2021, 7:16pm UTC](https://forum.inductiveautomation.com/t/click-plc-tags-not-being-recognized-on-ignition/44645/2 "2021-03-18T19:16:35Z")
Are you sure C1 in the click is modbus address 0x1? The click gui will show you what the modbus addresses are so I would double check that. ---
**Author:** ![pablo](https://avatars.discourse-cdn.com/v4/letter/p/ad7895/32.png) [@pablo](https://forum.inductiveautomation.com/u/pablo)\ **Post date:** [March 18, 2021, 8:14pm UTC](https://forum.inductiveautomation.com/t/click-plc-tags-not-being-recognized-on-ignition/44645/3 "2021-03-18T20:14:41Z")
Good point. This is what I see ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/0/f0945dce28067760a599bb5b6f70596923b50926.png) How should I map it on the OPC tag if I know C1 is equivalent to modbus Address 16385? ---
**Author:** ![brandon1](https://avatars.discourse-cdn.com/v4/letter/b/ea666f/32.png) [@brandon1](https://forum.inductiveautomation.com/u/brandon1)\ **Post date:** [March 18, 2021, 8:47pm UTC](https://forum.inductiveautomation.com/t/click-plc-tags-not-being-recognized-on-ignition/44645/4 "2021-03-18T20:47:58Z")
Try [Click\_PLC]C16385 ---
**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:** [March 18, 2021, 8:51pm UTC](https://forum.inductiveautomation.com/t/click-plc-tags-not-being-recognized-on-ignition/44645/5 "2021-03-18T20:51:16Z")
Would also be worth figuring out what unit/slave ID the CLICK is expecting. Ignition defaults to 0 if not specified. They may want you to use 1 or 255 or something. Address would look like `[Click_PLC]1.C16385` etc… ---
**Author:** ![pablo](https://avatars.discourse-cdn.com/v4/letter/p/ad7895/32.png) [@pablo](https://forum.inductiveautomation.com/u/pablo)\ **Post date:** [March 19, 2021, 2:26pm UTC](https://forum.inductiveautomation.com/t/click-plc-tags-not-being-recognized-on-ignition/44645/6 "2021-03-19T14:26:24Z")
I was trying to troubleshoot data type Boolean but for some reason I didn’t get it to work. [Click\_PLC]C16385 worked with data type Byte. Thank you guys