A-16
MS-4X Imager Us
er Manual
Communications Protocol
ACK/NAK Data Flow Examples
Setup 1
Transfer 1
Transfer 2
Error Condition
Transfer 1
Transfer 2
RES 0x00 (disabled)
REQ 0x00 (disabled)
STX 0x00 (disabled)
ETX 0x00 (disabled)
ACK 0x06
NAK 0x15
LRC disabled
HOST_TX <K141,0>
IMAGER_TX ‘ACK’
HOST_TX <K141?>
IMAGER_TX ‘ACK’
IMAGER_TX <K141,0>
HOST_TX ‘ACK’
IMAGER_TX symbol data
HOST_TX ‘NAK’ (host rejects)
IMAGER_TX symbol data (resend data)
HOST_TX ‘ACK’ (transaction complete)
HOST_TX <K141?>
IMAGER_TX ‘ACK’
IMAGER_TX <K141,0>
timeout reached...
timeout reached...
timeout reached...
Timeout Reached
transaction aborted, data is flushed
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