Table of Contents
Advertisement
MS-120X and MS-220X Integration Guide
ACK/NAK with ENQ
This combines the two previous options.
XON/XOFF
An XOFF character turns the scanner transmission off until the scanner receives an XON
character. There are two situations for XON/XOFF:
•
XOFF is received before the scanner has data to send. When the scanner has data
to send, it waits up to Host Serial Response Time-out for an XON character before
transmission. If the scanner does not receive an XON within this time, it issues an
error indication and discards the data.
•
XOFF is received during a transmission. Data transmission then stops after
sending the current byte. When the scanner receives an XON character, it sends
the rest of the data message. The scanner waits indefinitely for the XON.
10-18
ACK/NAK with ENQ
XON/XOFF
Advertisement
Table of Contents
