Hand Held Products 7200/UG User Manual
Page 105
C H A P T E R 7 U S I N G T H E D O L P H I N 7 2 0 0 H O M E B A S E
105
105
105
105
<ESC>HHPCIn
n
is the number representing the first unit in the network
For example, the string <ESC>HHPCI0 would instruct the network to set up ID
numbers for all the units in the network beginning at zero (0).
2.
The first Dolphin HomeBase in the network receiving the command responds to
the host with:
<SYN>
<SYN> indicates that the command was accepted
3.
In sequence, each Dolphin HomeBase will determine its own ID number by
adding one to the previous ID number.
4.
When ID numbers are established for all HomeBases, the last HomeBase will
return this response to the host:
<ACK>n
<ACK> indicates completion of ID configuration;
n
represents the ID number
for the last unit in the network.
Programmer’s Note: When sending ID numbers to the Dolphin HomeBase, remember
that numbers typed on the keyboard are ASCII numbers which will be converted to Hex
when sent to the Dolphin HomeBase. For example, typing the command from the
keyboard:
<ESC>HHPCI1
would instruct the network to set up ID numbers for each Dolphin HomeBase starting
with the ASCII number 1. The first unit in the network would actually receive the
number 31 Hex (since ASCII 1 is equal to 31 Hex) as the starting ID number. Each unit
in the network would sequentially add one to this starting ID number to establish its
own ID. So, for a network of 15 units, the final ID number would be set up as 3F Hex.
When the final unit sends back an <ACK>3F, the host computer (which converts Hex
data back to ASCII) will then display the ID number as “?” instead of 15 as you might
expect.
Baud Rate Selection
The Dolphin HomeBase baud rate is preset to 57600 at the factory. Use the
configuration switches on the back panel of the HomeBase to select the network and
communications modes for your Dolphin. The following table outlines the
configuration switch settings:
N O T E
The configuration
switches are checked at
power up. Changes in the
switch settings will not be
recognized until power is
turned off and
back on.