IO.getValueStr() from a general purpose register returns "" / nothing?

[jan.jungbluth]

Hey there,

is the IO.getValueStr() only working for digital/analog inputs/outputs?
I thought i could use it to read the values of general purpose registers,
but its just returns a empty string …

Thanks for answers…

[a.mora]

Unfortunately getValueStr() does not work with general purpose registers. Have a look here:

Direct addressing Fieldbus Registers with URCap

You need to implement RTDE client in java to read or write these registers. Both output, and input registers are always available to be read, but only one client can reserve input register for write access.

Get variable/register value from Java

When referring to general purpose registers, are you then referring to the GP registers in Modbus Server (addr. 128-255) or the Input_Integer_Register/Output_Integer_Register available over at the RTDE interface (including EthernetIP and Profinet)? In either way, from the URCaps API classes com.ur.urcap.api.domain.io.* in respect to Modbus and Fieldbus registers, you are only able to read existing signals, that are present in the system. For Modbus, this means, that there must be a “device” pr…

How can I set the digital input and output register

The bit registers are the ones referred as “boolean” in URScript. Hence below URScript codes are used to interact with bit registers: read_input_boolean_register(address) read_output_boolean_register(address) write_output_boolean_register(address, value) They are further explained in the URScript Manual.

[jan.jungbluth]

Thanks for your reply a.mora!

@UR-Team please update your api reference, for me - and i think for ohters too - it is not clear that the registers values are not accesible, see api reference IO class and getValueStr() as well isResolvable() methods. You could save some customers time and avoid repetitiv questions in the forum.

[fluffypancake39]

Hi!

I am sorry for bothering almost a year later but i am still confused on this issue: my goal is to read/write general purpose registers but i can not find a way to achieve this goal.

In your opinion, could this be possible by defining a new RTDE client in order to implement this goal? Or is it something not possible to achieve since the values of the registers are not accessible?

Thank you for your cooperation

Serena