StrongLink SL025M
http://www.stronglink-rfid.com
5
4-
.
BAUD RATE SETTING
Two 820 ohm resistances R6 & R7 are used for setting baud rate as follows sheet
R6
R7
Baud rate bps
Assembled
no
no
9,600
yes
no
19,200
no
yes
57,600
yes
yes
115,200
( default )
4. COMMUNICATION PROTOCOL
4-1. Communication Setting
The communication protocol is byte oriented. Both sending and receiving bytes are in
hexadecimal format. The communication parameters are as follows
Baud rate:
9,600 ~ 115,200 bps
Data:
8 bits
Stop:
1 bit
Parity:
None
Flow control:
None
4-2. Communication Format
Host to SL025:
Preamble
Len
Command
Data Checksum
Preamble:
1 byte equal to 0xBA
Len:
1 byte indicating the number of bytes from Command to Checksum
Command: 1 byte Command code, see Table 3
Data:
Variable length depends on the command type
Checksum: 1 byte XOR of all the bytes from Preamble to Data
SL025 to Host:
Preamble
Len
Command
Status Data Checksum
Preamble: 1 byte equal to 0xBD
Len:
1 byte indicating the number of bytes from Command to Checksum
Command: 1 byte Command code, see Table 3
Status:
1 byte Command status, see Table 4
Data:
Variable length depends on the command type.
Checksum: 1 byte XOR of all the bytes from Preamble to Data
