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

[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.