READ_REGISTER

Role

Read the value of a register from the non-volatile memory.

This function is suitable to read either a constant register (address 0100 to 01FF), a configuration register (address 0200 to 02FF), a template register (address 0300 to 03FF) or a statistics register (address 0400 to 04FF) from the non-volatile memory.

Access condition

Depending on the configuration-defined access conditions and on the type of host interface (Local / Remote), this instruction may either be freely usable, restricted to communications authenticated by HostCommAdminKey only, or disabled.

Command

Data Value
CLA 58 (CONTROL)
INS 81
Data 2 bytes: address of the register (MSB-first)

Response

Bytes Content
0-N Current register value (empty if not defined in the non-volatile memory)