PRODUCT REFERENCE GUIDE
303
CHAPTER 5
MESSAGE FORMATTING
MESSAGE FORMATTING
A message from the Host to the base must follow these rules:
• If Address stamping options or address delimiter are enabled on the base, the
Host replay must have address field and delimiter too. Otherwise the message will
be ignored. Address delimiter is present only when address stamping is enabled.
• Address stamping is necessary to correctly route the message to the PowerScan
PM96XX, especially when more than one handheld is linked to the same base.
Address stamping could be disabled if the system is in point to point configuration.
If address stamping is not enabled, the messages are addressed to the first hand
-
held linked to the base.
• The maximum character length for messages is 48.
• Messages end with “CR” 0x0D ASCII character. The CR character cannot be con
-
tained in the middle.
• Messages cannot start with '$' or # because these are reserved for Service mode
command
• Base station can receive host message only if Host Commands Obey/Ignore is set
to Ignore.
• Message could be sent to the HH in response to a Label when “Transmit mode”
require Ack from Host (see transmit mode parameter) or at any time. When mes
-
sages are sent not in response to a label must start with DC2 0x12 ASCII character
and could be sent in any transmit mode setting.
• Message could be sent to all HH linked to base by using a Multicast message:
“00 00 00 00 2A AA”
• In order to receive a message, handhelds must not be in Battery Profile = Maxi
-
mum Autonomy.
• If you want to control the reader's beeper from the host, you will also probably
want to disable the good transmission beep that is emitted when the code is
received from the base station. (See "
Wireless Features" on page 256
).
• The message field can store plain text and escape sequences. Escape sequences
are interpreted as commands.
NOTE: Message Formatting is only available for the PowerScan™ Wireless
model.
