Blueprint Subsea seatrac X100 Series, Руководство пользователя

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SeaTrac Serial Command Interface Reference
Page 23
 Check each remote beacon uses the same response turnaround time value in the
XCVR_RESP_TIME field – typically this should be 10ms.
 Program any settings changed back into the beacon using the CID_SETTINGS_SET
and CID_SETTINGS_SAVE commands.
Configuring the Local Beacon (that performs the interrogation)
 Start as described previously in section 4.4 by retrieving the beacon settings into a
SETTINGS_T structure.
 Request that position fix messages are generated by the acoustic transponder by
settings the XCVR_FIX_MSGS flag in the XCVR_FLAGS field. Additionally specifying the
XCVR_DIAG_MSGS flag will also request that further transceiver activity and status
information is output.
 Setup the range (and hence amount of time) the transponder will wait for a remote
beacon to respond to a request before a timeout error is raised by specifying the value
of the XCVR_RANGE_TMO value.
 Check that the beacon is assigned a unique beacon ID for the network addressing in
the XCVR_BEACON_ID field.
 Check the beacon uses the same response turnaround time value as the remote
beacons, in the XCVR_RESP_TIME field – typically this should be 10ms.
 Program any settings changed back into the beacon using the CID_SETTINGS_SET
and CID_SETTINGS_SAVE commands.
Interrogating Beacons
 When the acoustic transponder is idle, send the CID_PING_SEND command along with
a remote Beacon ID code to start a ping sequence. The beacon will immediately
output a status response message indicating if the transponder is busy or if
transmission has started. The acoustic transceiver will transmit a PING Request
message
 On reception of the PING Request, the remote beacon will output as CID_PING_REQ
serial message locally – this is for information only, so it does not matter if the remote
beacon has a serial link connected.
 At some point later in time (proportional to the range of the remote beacon) as PING
Response acoustic message should be received and the local beacon will signal
success with a
CID_PING_RESP message.
 Because of the previous configuration, the local beacon will generate a CID_XCVR_FIX
message that contains ranging information. Additionally, if the local beacon is an X150
model this message will also contain positioning information.