Example: Command Buffer Management - Additional Information Response - IBM 4610 SureMark GR3 Programming Manual Supplement

•
Command
•
Command Extension = n0 bytes
•
Command Data
3. Additional Data Length is n2 bytes
where:
•
Command Response = n2 bytes
•
n2 = 129 - (Type + Command + Command Extension + Command Data + Fiscal Unit Status)
4. The Additional Data of the Executed Command is shown in the remaining bytes (n2) of the
Additonal Information Response.
If the Additional Data of the Executed Command length is greater than the remaining bytes (n2)
of the Additonal Information Response the Additional is truncated.
5. Fiscal Unit Status Executed Command (buffering command) length is n3
where:
•
RS-485 = 9 bytes
•
USB = 15 bytes

5.2.5.1 Example: Command Buffer Management - Additional Information Response

+-----------------------------------------------+
| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| A| B| C| D| E| F|
|--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--|
|FF|10|5F|FF|11|30|35|30|30|43|30|35|30|39|30|34|
|39|31|36|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|
|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|
|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|
|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|
|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|
|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|FF|
|FF|FF|08|4F|00|0A|20|07|28|00|00|80|02|01|0B|43|
|00| | | | | | | | | | | | | | | |
+-----------------------------------------------+
5.2.5.2 Command Buffer Management Rules
•
The command buffer size is 2 Kb (2048 bytes).
•
When a command is executed, this command is stored in the command buffer (except the F7 cmd.).
•
If the command buffer is full the oldest command is removed of the command buffer.
•
If a PLD occurs during the command execution, the interrupted command is stored in the command
buffer and the fiscal unit status of the executed command is equal to zero.
= 1 byte
= n1 bytes
Command Set Reference — Page 73 of 183