7.4 Firmware Response Format

The following frame format is used for firmware responses.

Figure 7-3. Firmware Response Fields

The header field contains the firmware signature data (0x1122). This field is fixed by the PL360 embedded firmware and is used to check if this firmware runs properly.

Info: Due to the 16-bit configuration used in this SPI firmware transaction, the firmware signature is stored in memory as 0x2211.

The payload field depends on the PLC communication stack in use (G3 or PRIME). For further information, refer to atpl360_comm.h file.