14.4.2.1.1 Read ROM Code Version (RVER)

For this specific command, the Secure SAM-BA Monitor replies with the SVER opcode and indicates that the ROM Code version string length is 48 (0x30) bytes, so the external tool knows how many characters it has to receive.

(PC to Device) >> RVER,,,,#

(Device to PC) << SVER,00000000,00000030#v1.0 Jul 4 2019 11:58:23