Fire-Lite MS-10UD Series FACP - Manual (Page 115)

MS-5UD & MS-10UD Series Manual — P/N 52626:C4 3/7/2014 115
Transferring a Program Local/Remote Site Upload/Download
Secret Code Verification
A secret code is stored in the control panel by a Service Terminal to prevent unauthorized access.
The secret code is created at the Service Terminal by the master user and cannot be viewed or
changed by anyone other than a master user. Viewing of the secret code is prohibited at the control
panel. Prior to allowing an upload or download of data, the control panel will verify the secret code
transmitted by the Service Terminal.
Time-out at Control Panel
Upon answering an incoming (modem) call on the primary Central Station phone line, the control
panel will listen for a modem connection signal. If this signal is not received within 50 seconds, the
control panel will disconnect the call. Upon successful connection (secret code verified), if no
communication occurs within 30 minutes, the panel will disconnect the call. Upon time-out, trans-
fer activity will be reported to the Central Station (if enabled) and the connection will be termi-
nated.
Error Checking
As each block of data is received by the control panel, it is checked for accuracy. If an error is
detected, the block is retransmitted until correct, up to a maximum of four times. If the Secret Code
is not verified and four errors occur, the call is disconnected and the report that the upload/down-
load was not successful is called to the Central Station(s).
Central Station Data Protection
The primary and secondary Central Station phone numbers, communications format, account code,
test time and programmable event codes are vital Central Station information. These blocks of data
are protected from partial programming due to faulty phone connections, line noise and other
errors. This prevents the panel from being confused due to a wrong phone number, account code,
test time and most critical formatting errors.