54
RS232
S
OFTWARE
H
ANDSHAKING
³
1
1
5
9
1
3
Enable ACK/NAK
- After transmitting data, wait for
an ACK (06H) or a NAK (15H) response from the
host. If ACK is received, complete the
communications cycle and look for more bar codes.
If NAK is received, retransmit the last set of bar
code data and wait for ACK/NAK again.
³
1
1
5
9
0
3
* Disable ACK/NAK
³
1
1
5
9
1
1
Support BEL/CAN in ACK/NAK
- When BEL
(07H) is received, the scanner beeps 3 times and
exits the communications loop. If a CAN (18H) is
received, then the scanner will exit the
communications loop, silently.
³
1
1
5
9
0
1
* Ignore BEL/CAN in ACK/NAK
- Ignore BEL/CAN
characters in communication loop.
³
1
1
8
0
1
3
Enable 5 Retries on ACK/NAK Time Out
- Allow
up to 5 NAK retransmissions of the data before
dropping out of the communications loop.
³
1
1
8
0
0
3
* Disable 5 Retries on ACK/NAK Time Out
³
1
1
5
8
1
4
Enable 5 NAK Retries
Allow up to 5 retransmissions of the data if a NAK
is received.
³
1
1
5
8
0
4
* Disable 5 NAK Retries
³
1
2
5
2
1
0
Enable GLS Handshaking
– Accept ]V for the
ACK acknowledgement. ACK will no longer be
accepted but NAK and any additional ACK/NAK
protocol characters enabled are still accepted.
³
1
2
5
2
0
0
* Disable GLS Handshaking
Summary of Contents for MS9544
Page 2: ...METROLOGIC INSTRUMENTS INC MetroSelect Single Line Configuration Guide ...
Page 98: ......
Page 99: ......
Page 100: ......
Page 101: ...April 2007 Version 01 Printed in the USA 0 0 0 2 5 4 4 H ...