Reference Guide

• RS232 Protocol

Communication Settings

Connection Settings Value

Baud Rate 9600 bps

Data Bits 8 bits

Parity None

Stop Bits 1 bit

Flow control None

Control Command Syntax (From PC to Monitor)

[H0][H1][Len][R/W][Cmd][Data0]…[DataN][Chk]

[H0] = 6E

[H1] = 51

[Len] = Length

[R/W] = Read/Write

Read = EB

Write = EA

[Cmd] = Command

[Data0]…[DataN] = Data0~N

[Chk] = Check Sum

[Len] = 0x80+N

When N is the number of bytes from [R/W] to [DataN]

Exclusive OR = xor, check sum is calculated as below:

[Chk] = [H0] xor [H1] xor [Len] xor [R/W] xor [Cmd] xor [Data0]…[DataN]

Reply Command Syntax (From Monitor to PC)

[H2][H3][Len][Reply][RC][Cmd][Data0]…[DataN][Chk]

[H2] = 6F

[H3] = 6E

[Len] = Length

[Reply] = Reply (02)

[RC] = Result Code

0 = Success

1 = Timeout

2 = Parameters Error

3 = Not connected

4 = Other Failure

[Cmd] = Command

[Data0]…[DataN] = Data0~N

[Chk] = Check Sum

[Reply Len] = 0x80+N

When N is the number of bytes from [Reply] to [DataN]