Product Reference Guide 379
Chapter 14
Message Formatting
Message Formatting
A message from the Host to the base must follow these rules:
• If Address stamping options or address delimiter ar
e 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 Gryphon I, especially
when more than one handheld is linked to the same base. Address stamping could be dis-
abled if the system is in point to point configuration. If
address stamping is not enabled,
the messages are addressed to the first handheld linked to the base.
• Messages end with “CR” 0x0D ASCII character.
The CR character cannot be contained
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
Ac
k from Host (see transmit mode parameter) or at any time. When messages 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 sleep state.
The format of the ACK from Host message (used for transmiss
ion mode 02) is:
[Sc
anner_Addr] [Scanner_Addr_delimiter] MESSAGE <CR>
The format of a generic message From Host to HH is:
[Scanner_Addr] [Scanner_Addr_delimiter] DC2 MESSAGE <CR>
where DC2 is ASCII 0x12 (^R) character.
[Items in square brackets are optional.]
NOTE
Message Formatting is only available for the Gryphon™ Mobile
model.
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