User's Manual

4. Network command
Format
To ensure all transfers over UART are operating as expectation, each transfer is required to
include the following fields:
● An Opcode which defines the specific operation, the operation may be different
between the Printer and the Module.
● A transfer size designates the whole size of this transfer. Target should drop this
transfer and acknowledge Initiator with error when received size is different to this
value.
* All the fields denoted in transfers are adhering to Network Byte Order (Big Endian).
Transfer Commands:
Printer Command Set:
Data Write Command:
This command provides function for Initiator to write data to Target.
Initiator Request:
Module Ready Signal:
Module Request:
*Version: String: [MAJOR NUMBER].[MINOR NUMBER].[BUILD NUMBER]
AT Command:
Printer can communicate AT command with Module in following format.
Initiator Request:
Target Response:
Opcode Transfer size Data Checksum
Value 0x1100 Size Data Reserved
Size (Byte) 2 3 <16M 2
Opcode Transfer size F/W Ver. Checksum
Value 0xFF00 Size Version* Reserved
Size (Byte) 2 3 8 2
Opcode Transfer size Data Checksum
Value 0x2000 Size AT command Reserved
Size (Byte) 2 3 <16M 2
Opcode Transfer size Data Checksum
Value 0x2000 Size AT Response Reserved
Size (Byte) 2 3 <16M 2