6.2.6 Response Message Format
All valid command messages are acknowledged in the following forms. The address
and command characters are a reiteration of those in the command message.
5ACK4 address command 5ETX4 checksum
Simple acknowledgment.
5ACK4 address command data 5ETX4 checksum
Acknowledgment with data.
Any unrecognised or unexecutable commands will be acknowledged in the form
shown below.
5NAK4 address command data 5ETX4 checksum
Not acknowledge, with explanation for the command rejection.
Any command containing a parity, framing, overrun, or checksum error will be
ignored and consequently the master must re-issue the command.
6.2.7 Message Timing
The maximum time between each character of a message must not exceed 10 ms,
and a pause of 10 ms minimum should be inserted after a command message to allow
units to recognise bus inactivity between commands.
HBN63xx-1, Issue 8, Page 34
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