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STARTUP
The CB Falcon is shipped in the unconfigured condition, so
when power is applied, all safety loads are off and the burner
status when viewed from the 833-3577 Display is shown as
“Safety data setup needed.”
Once the Safety Data is configured, the CB Falcon is ready to
operate a boiler.
Commissioning
Passwords
A password level of protection is assigned to all parameters.
Three levels, listed here are shown in decreasing order of
privilege:
1. OEM password required—allows access to all param-
eters
2. Installer password required—allows access to some
parameters
3. End User (no password)—allows access to non-pass-
word parameters
Whenever a valid password has been provided, the CB Falcon
remains in the access level of that password until either 10
minutes of inactivity (no more edits) has occurred or the
command is received to exit to the normal no-password state.
The OEM and Installer passwords are given a default value
when the CB Falcon is shipped, but may be changed later using
the 833-3577 system display.
The CB Falcon must be at an appropriate password level for
changes to be effective (OEM password level allows changing
either OEM or Installer parameters, installer password level
allows changing only the installer parameters).
Parameter Control Blocks (PCB)
The CB Falcon Parameters are listed in control blocks of
parameters. There are three parameter control blocks (PCB)
that may be installed into the memory of the Falcon:
1. OEM Parameter PCB—makes any parameter hidden
and/or unalterable and assigns the password level
2. OEM Alert PCB—determines which alerts are enabled
and, for those that are enabled, if the alert causes the
alarm contacts to close.
3. OEM Range PCB—limits the range of any parameter.
A parameter control block is downloaded using a file-transfer
method that operates within the Modbus protocol. The
CB Falcon Global Modbus Interface Specification defines the
format of parameter control block data and the download
procedure. All of the OEM PCBs require the OEM password
before they can be downloaded.
OEM PARAMETER PCB:
Providing the OEM password allows downloading of a
parameter control block for OEM protected data. This block
assigns the value of these attributes for each parameter:
•Range Limit—If provided the parameter's value will be
limited.
• Hidden—This attribute prevents the parameter from
showing in the display - it is hidden. (A hidden parameter
can be read through Modbus, but attempts to write to it
return an error response).
• Read-only—This attribute prevents the parameter from
being changed.
• Password—The password attribute defines the level of
password needed to alter the item: OEM, Installer, or none.
The interaction and behavior of these settings is shown in
Table 6. (All parameters are readable via Modbus, however a
Modbus error response message is sent if an attempt is made
to write one that is marked read-only, or that requires a
password and the appropriate password level is not in-effect.)
OEM ALERT PCB
Providing the OEM password allows downloading of a
parameter control block for alerts.
• Each alert in this block enables/disables the alert - a
disabled alert is never shown.
• An enabled alert has the option of sending an Alarm
(should the alarm contacts close or not close whenever this
alert occurs).
OEM RANGE PCB
Providing the OEM password allows downloading of a
parameter control block for range limits.
• This block specifies the minimum and maximum values for
any writable parameter that accepts a numeric range, and
for parameters that are enumerated lists, it can suppress
one or more of the items in the list. If a parameter is not
listed in this PCB, then it is not restricted.
Table 6. Interaction of OEM Parameter Settings.
Hidden Read-only Password
via System & Local Display via Modbus register I/O
Shown Write Read Write
0 0 0 Yes Anytime Yes Anytime
0 0 1 Yes Need Password Yes Need Password
01 x Yes No Yes No
100 NoNoYesAnytime
1 0 1 No No Yes Need Password
11x NoNoYesNo
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