Siemens 125-5050 CTL Flow MIN, CTL Flow MAX, CTL Temp, CLG Loopout, HTG Loopout, AVG Heat OUT

Chapter 3 – Point Database

Descriptor	Address1	Application	Description
FLOW	{75}2	All except 2597	Indicates the amount of air currently passing the air velocity
			sensor. The value is calculated as a percentage based on
			where the value of AIR VOLUME is in the range between 0
			and CTL FLOW MAX.
CTL FLOW MIN	{76}2	All except 2597	The active minimum flow used as a limit for the flow control
			loop. This value is the same as CLG FLOW MIN if the
			controller is in cooling mode, or is the same as HTG FLOW
			MIN if the controller is in heating mode, unless it is overridden.
CTL FLOW MAX	{77}	All except 2597	The active maximum flow used as a limit for the flow control
			loop. This value is the same as CLG FLOW MAX if the
			controller is in cooling mode, or is the same as HTG FLOW
			MAX if the controller is in heating mode unless, it is
			overridden.
CTL TEMP	{78}	All except 2597	The temperature used as input for the temperature control
			loops. This value is the same as the value in ROOM TEMP
			and RM TEMP OFFSET unless it is overridden.
CLG LOOPOUT	{79}	All except 2597	The cooling temperature control loop output value in percent.
HTG LOOPOUT	{80}	All except 2560, 2597	The heating temperature control loop output value in percent.
AVG HEAT OUT	{81}2	2562, 2564, 2566	This point is used to determine what stages of electric heat
			are used for a given loop output value. The ranges for the
			value are determined by the number of stages used: 0 to 100
			for 1 stage of electric heat, 0 to 200 for 2 stages of electric
			heat, and 0 to 300 for 3 stages of electric heat.
			With electric heat, this value is equal to: HTG LOOPOUT ×
			STAGE COUNT.
STAGE MAX	82	2562, 2564, 2566	The value, in percent, which the heating loop must exceed for
			the electric heat to be ON for the full duty cycle (STAGE
			TIME).
STAGE FAN	83	2565, 2567	The valve must be opened greater than this value before the
			fan will turn ON.
STAGE MIN	83	2562, 2564, 2566	The value, in percent, which the heating loop must go below
			for the electric heat to be OFF for the full duty cycle (STAGE
			TIME).
DMPR STATUS	{84}2	2560, 2561, 2562,	This point is used only when CAL MODULE set to YES. It
		2563	readjusts the damper position if the command value is not
			equal to the actual position of the damper. CAL indicates that
			the damper is operating normally. RECAL indicates that the
			damper position was adjusted (recalibrated) by 25% because
			the desired airflow was not obtainable under its current status.
SWITCH LIMIT	85	All except	The active temperature control loop output must be less than
		2560, 2561, 2597	this value to switch between cooling mode and heating mode.
			Actual switchover depends on SWITCH DBAND being
			exceeded and is subject to SWITCH TIME being expired.
SWITCH TIME	86	All except	The time, in minutes, before the heat/cool mode can change
		2560, 2561, 2597	over when the other parameters are appropriate.
STAGE COUNT	88	2562, 2564, 2566	The number of electric heating stages used by the application.
			DOs associated with unused stages may be used as spare
			DOs.
VALVE COUNT	88	2563	The number of heating valves available.
STAGE TIME	89	2562, 2564, 2566	The cycle time in minutes for the electric reheat stages. For
			example, if there are three stages of electric heat and STAGE
			TIME = 10 minutes, STAGE COUNT = 3, and AVG HEAT
			OUT = 150% then, Stage 1 is ON for 10 minutes (100% of the
			time), Stage 2 is ON for 5 minutes (50% of 10 minutes) and
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Siemens Industry, Inc.			BACnet ATEC Owner's Manaul
125-5050, Rev. AA			4/20/2010