FUJITSU M3099EX/EH - Manual (Page 44)

3-16 M3099EX/EH OEM Manual
Command/response format
The command/response format is as follows.
TEXT Additional field CNT CMD/RPS
CNT (count) field
The total number of bytes in the command/response to be
transmitted is represented.
CMD/RPS field
A command or response code is indicated.
TEXT field
Additional information for a command/response, called control or
device information, is indicated.
Additional field
In some commands, additional field exists next to TEXT field.