Instruction Manual

ACR31 – Reference Manual [e-mail]
Version 1.00
www.acs.com.hk
Page 14 of 19
6.7. RDR_to_SPH_FirmwareVersion
This message is sent by ACR31 in response to the command message
SPH_to_RDR_FirmwareVersion.
Offset Field Size Value Description Encrypted
0
bStartByte
1 23h Message start byte.
No
1
wLength
2 000Fh
Number of extra bytes starting
from the next field for this
message.
3
bMessageType
1 81h
4
abFirmwareVersion
12 Firmware version string.
16
wCheckSum
2
CRC16 checksum for all the
preceding fields.