Metrologic MS9500 Voyager Series Installation And User Manual page 22

Programming Modes (continued)
EXAMPLE #3: The following example shows the events that occur when an
invalid bar code is sent. This sample will load the factory default settings
and then set the baud rate to 19200.
FEATURE
Enter Program Mode
Load Defaults
Invalid command was sent, you must start over!
Enter Program Mode
Load Defaults
19200 Baud Rate
Exit Program Mode
The scanner will emit a long beep!
This example illustrates two important points.
First, if an invalid command is sent from the host, the scanner
responds with a [nak] and the end-user must start over from the
beginning.
Second, if a command is sent to change the Baud Rate, the new
baud rate does not take effect until after the end-user exits program
mode.
ABBREVIATED ASCII TABLE
Character
[STX]
[ETX]
[ACK]
[NAK]
0
1
2
3
4
5
6
7
8
9
17
HOST
COMMAND
[stx]999999[etx]
[stx]99999:[etx]
[stx]999999[etx]
[stx]999998[etx]
[stx]415870[etx]
[stx]999999[etx]
Hex Value Decimal Value
02h
03h
06h
15h
30h
31h
32h
33h
34h
35h
36h
37h
38h
39h
ASCII REPRESENTATION
02h 39h 39h 39h 39h 39h 39h 03h
02h 39h 39h 39h 39h 39h 3Ah 03h [nak] or 15h
02h 39h 39h 39h 39h 39h 39h 03h
02h 39h 39h 39h 39h 39h 39h 03h
02h 34h 31h 35h 38h 37h 30h 03h
02h 39h 39h 39h 39h 39h 39h 03h
2
3
6
21
48
49
50
51
52
53
54
55
56
57
SCANNER
RESPONSE
[ack] or 06h
[ack] or 06h
[ack] or 06h
[ack] or 06h
[ack] or 06h