# DigitalInputActions on Fieldbus-inputs
**URL:** https://forum.universal-robots.com/t/digitalinputactions-on-fieldbus-inputs/2522
**Category:** Product Wishlist
**Created:** [August 14, 2018, 11:46am UTC](https://forum.universal-robots.com/t/digitalinputactions-on-fieldbus-inputs/2522 "2018-08-14T11:46:56Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@anon21596585](https://forum.universal-robots.com/u/anon21596585)
#### Post date: [August 14, 2018, 11:46am UTC](https://forum.universal-robots.com/t/digitalinputactions-on-fieldbus-inputs/2522/1 "2018-08-14T11:46:56Z")
Hello to all!
Is there a way that fieldbus inputs can have an action just like the robot internal inputs?
I would like a fieldbus-input to become FREEDRIVE function.
Could this function be configured by changing the value of the specific input in the register in the “default.installation” - file
(NONE =\> FREEDRIVE)?
GeneralPurposeBooleanRegisterInputActions value=“NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE”/
Is there a way to access this register from external?
Regards, Herbert
---
### Author:  [@ajp](https://forum.universal-robots.com/u/ajp)
#### Post date: [August 24, 2018, 3:52am UTC](https://forum.universal-robots.com/t/digitalinputactions-on-fieldbus-inputs/2522/2 "2018-08-24T03:52:56Z")
You can configure IO Actions for gp boolean input registers under the installation tab in Polyscope in the same way you can do it for digital inputs. Doing it for gp\_bool\_in[0] contributes this to the script file sent to the controller:
```
set_gp_boolean_input_action(0, "freedrive")
```
It’s not in the script manual and I haven’t tested this in on a real robot, but I imagine you could send this configuration script to the one of the client interface ports and then set the register via Ethernet/IP or Profinet.
---
### Author:  [@anon21596585](https://forum.universal-robots.com/u/anon21596585)
#### Post date: [August 24, 2018, 5:59am UTC](https://forum.universal-robots.com/t/digitalinputactions-on-fieldbus-inputs/2522/3 "2018-08-24T05:59:02Z")
How do Modbus - inputs refer to the gp\_boolean\_input\_register?
In the Polyscope I/O tab I can see all Modbus - output signals
with option to configure their behaviour but the Modbus - input
signals do not appear in this tab. Why?!?
Best regards, Herbert
---
### Author:  [@mmi](https://forum.universal-robots.com/u/mmi)
#### Post date: [September 4, 2018, 12:50pm UTC](https://forum.universal-robots.com/t/digitalinputactions-on-fieldbus-inputs/2522/4 "2018-09-04T12:50:39Z")
Moved to Feature Requests.