Appendix E Falcon Lead Lag
E-45
Frost protection requests
The frost protection in this status register will be set or cleared to match the status generated by the frost protection
detection functions.
Firing for local frost protection
This provides indication to the LL master that although the burner is firing independently, it is doing so for frost
protection and thus is still available as a lead/lag slave. This is set when 1) frost protection is controlling the Falcon per
the priority scheme (which occurs only if frost protection is enabled), and 2) burner demand is true and the burner is
currently firing or preparing to fire to serve that demand. Otherwise it will be clear.
Aux Pump X, Y, and Z
The pump control in the Slave can be used by previously-existing command devices to create the same behavior.
However before these bits controlled actions is specific pump blocks, they are now more general. The pump X, Y, and
Z bits control actions in any pump block defined to handle them (see the pump control block definition).
SLAVE PARAMETERS
SLAVE ENABLE: DISABLE, ENABLE VIA MODBUS, ENABLE FOR FALCON MASTER
It enables or disables the "LL Slave" Demand and Rate module.
If the slave mode is set to Disable then:
none of the slave functions are active, Slave Status register is zero, the LL – Master Service Status register is not
writable and is held at zero (this is important for pump control which might otherwise use values in this location).
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