References
78
PowerScan™ PD9330/PBT9300/PM9300
Network Parameters
Slave Address Range First /Last
These parameters define the valid addresses for the Slave cradles on the
network. Valid values are in the range 0 to 1999. However, the maximum
number of cradles in a single network is 16, (including the Master if pres-
ent). All cradles in the system
must have different addresses.
To reduce system boot time
, it is recommended to number the Slaves con-
secutively, while it is not necessary that the Master cradle address is con-
tained in the range. The network addresses correspond to the radio
address
es, see par. "BC-8060 STAR-SYSTEM™ NETWORK SETUP", on
page-10.
At system power-up, the Master searche
s for and initializes all the Slaves
found in the valid address range. During this phase the yellow LED on the
Master cradle blinks. The time to complete the start up procedure varies
depending on the complexity of the network but is typically between a few
seconds to a few minutes. Start up cannot be interrupted. At the end of this
procedure the system will be operative and can collect data from all devices
CAUTION
All Slaves must be powered up either before or together with the Master.
Slaves successively powered will not be recognized by the system even if
their address is in the specified range.
Network Warning Message
The Master cradle can transmit warning messages to the Host regarding
some network errors.
/*Slave xxxx not responding*/: when the Master can no longer communi-
cate with the specified Slave previously identified at start up.
/*Fr
ame out of sequence for terminal xxxx*/: if a reader is sending data
packets out of sequence. This can happen if there are transmission prob-
lems on the network (either connection or communication), or if the reader
has correctly transmitted data to a device not on the network (reader config-
uration error).
The message is sent in the following format:
"Message" CR LF
Reception Warning Message
The Master cradle can transmit warning messages to the Host regarding
wrong reception of data. Example:
/*Two-Ways Out of Sequence!(.....)*/
This message is transmitted to the Host by the Master cradle when the Mas-
ter cradle receives a closing string from the Host for a Two-way tx commu-
nication, but this was either not open or already closed, therefore the data
will
be lost.
To Next Page
Loading...
Need help?
General
