SATO Argon AS-9400DC, User Manual

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AS-9400
User Guide
- 100 -
Serial command
Sending and Receiving format and feedback messages
Command format: The following is the command transmission and
receiving format
Length
(1 Byte)
Source
(1 Byte)
ExID
(1 Byte)
ExCMD
(1 Byte)
Data
(MAX 32 Bytes)
High Byte of
Checksum
(1 Byte)
Low Byte of
Checksum
(1 Byte)
Length : Data length without Checksum (minimum 5 bits; maximum 36 bits)
Source : 0x57 means the terminal sends to the decoder; or
0x52 means the decoder sends to the terminal
ExID : Command identifier
ExCMD : Command
Data (MAX 32 Bytes) : The setting code can be transmitted up to 32 Bytes at a time
High Byte of Checksum : Checksum high bit
Low Byte of Checksum : Checksum low bit
Checksum Calculation
Checksum = 0x10000 – [ Length] – [ Source] – [ExID] – [ExCMD] – [D1 + D2 +D3 +…..]
Feedback message: When the terminal sends a command to the device, the device will send back
the following message so that the terminal can determine the success or failure of the command
If the setting is successful, the following 5 bytes of hexadecimal data (ACK) are transmitted to the
terminal in order.
52 A0 EC FE 74
If the setting fails, send the following 5 bytes of hex data (NAK) to the terminal in order.
52 A0 E0 FE 80