WattMaster WCC II - Manual (Page 17)

Section 1: General Instructions
WCC II Operator’s Guide
Operator Interfaces 1-7
Point Addresses
A Point Address uniquely identifi es a point within the ECC/WCC
II system. All point addresses have an associated “analog” or
“binary” value. The term “analog” simply means a value which
is represented by a number (such as room temperature, duct static
pressure, etc.). The term “binary” means the value is represented by
one of two conditions, ON or OFF. An input is a signal sent to the
ECC/WCC II system, and an output is sent from the ECC/WCC II
system. Therefore, room temperature is an analog input, fan status
is a binary input, and controlling a fan relay is a binary output.
In addition to the inputs and outputs that are wired to the SAT
II controllers, there are several software point addresses within
the system. For example, the ECC/WCC II system has 32 week
schedules. This means that a separate day/night schedule can be
assigned to 32 different areas of the building.
For example, assume that you have three different areas in a
building that have different schedules as shown in the following
table.
Area Occupied Time
Week Schedule #1 1st Floor West 8:00 am - 5:00 pm, M-F
Week Schedule #2 1st Floor East 7:00 am - 7:00 pm, M-F
Week Schedule #3 2nd Floor 9:00 am - 4:00 pm, M-Th
Week Schedule #1 is named W1, and the value of W1 will be On
between 8:00 am and 5:00 pm, Monday through Friday, etc.
The Name column in the table that follows is the name that you
should use when specifying a point address to the system. The “n”
is where a “point number” for the point address is to be entered.
Table of Point Addresses
Name Description Value
Cn Comparator (See analog input
screen binary setpoint)
On/Off
An Analog Inputs Analog
Pn Analog Inputs Analog
KnH Control Outputs
(H Contacts)
On/Off
KnC Control Outputs
(C Contacts)
On/Off
RnA Data Registers (a) Analog
RnB Data Registers (b) Analog
TnR Trend Logging Run Time Analog
Name Description Value
TnC Trend Logging Change of State None
TnA Trend Logging Analog Trend None
TnP Trend Logging Analog Peak None
Ln Logical Input On/Off
Wn Week Schedules On/Off
Sn Optimal Starts On/Off
GBn Binary Globals On/Off
GAn Analog Globals Analog
Constant Point Addresses
The following list shows several point addresses within the
system that are always available for use on many of the data input
screens.
Name Description Associated Data Type
0 Logical Zero Always Off
1 Logical One Always On
//// Logical Null Ignored
. . . . Logical Off Always Off/Not Used
Note: When a point option is not required, replace the default
value (/ / / /) with either a zero (0) or dot (. . . .) to force the
system to realize that the option is always OFF. If the slashes
are not replaced, the system will ignore that input and the
system can, in rare cases, see the slashes as being ON.
Name Description
Analog 0 Initiates a 0 (zero) value
TIME Current Time (in HH:MM format)
TIMEB Current Time (in minutes-since-midnight format)
NEWSEC New Second
NEWMIN New Minute
NEWHR New Hour
NEWDAY New Day
NEWMON New Month