heat-timer MPC Platinum Installation And Operation Manual page 42

MPC
Platinum REG DESCRIPTION
/ VARIABLE#
28 Night Heat Adjustment
29 Outdoor Night Cutoff
30 Outdoor Sensor
31 Outdoor Sensor Trim
32 Operation Mode
33 Output Relay
34 Panel Date
35 Panel Time
36 through 91 Day/Night Schedules
92 Season
93 Day/Night Shift
94 System Run-on
95 System Sensor
96 System Relay
97 System Sensor Trim
98 Thermal Lockout Enable
99 District Steam Delay
100 System Setpoint
MPC Platinum Notes
♦1 If specified, divide a read value by this to obtain the actual value – Multiply desired value by this before writing.
♦2 For variables that specify them, if a read value is a special value (32000 - 32005), do not divide by 'MULT'
♦3 Strings are packed 2 characters per register, most significant byte first.
♦4 Multi-register values are stored big endian (first register x 65536 + second register = value).
Note: All variables are stored as 'Holding Registers' MODBUS functions :
• 'Read Holding Registers' (function code 3),
• 'Write Single Register' (function code 6),
• and 'Write Multiple Registers' (function code 16) are supported.
Note:
All variables with multiple UOM's depend upon the value of 'Input Mode' to determine which to use
Note: Use 'District Steam Delay' when 'Operating Mode' is set to District Steam Use 'System Setpoint',
'System Differential' and 'Thermal Lockout Enable' when 'Operation Mode' is set to Burner/valve
Note: Use 'Vari-Boost Adjustment' when 'Boost Mode' is set to Vari-Day or Vari+ESD Use
'Manual Boost Time' when 'Vari-Boost Adjustment' is set to Manual Boost
Note:
The MPC Platinum has a schedule, which is 7-days, 4 day/night pairs per day For example: Register
38 is the first DAY schedule of Monday; Register 39 is the first NIGHT schedule of Monday; Register 46
is the first DAY schedule of Tuesday; Register 47 is the first NIGHT schedule of Tuesday and so on.
Note: Use MPC Platinum Installation and Operation manual for supplementary information
42
♦1
MULT
UOM
(if not 1)
°C, °F
°C, °F
°C, °F
Days since
1/1/1981
Minutes
since 0:00
Minutes
since 0:00
0=To-Day, 1=To-Night, 2=Extend-
Day, 3=To-Schedule
Minutes 0 – 60
-40 – 122°C, -40 – +250°F
°C, °F
(32000=Open, 32001=Shorted)
°C, °F
Minutes
°C, °F
MPC Platinum Installation and Operation Manual
RANGE / STATES / SPECIAL
VALUES
0 – 15 = A – P
-6 – 38°C, 20 – 100°F
-40 – 122°C, -40 – +250°F
(32000=Open, 32001=Shorted)
-3 – +3°C, -5 – +5°F
0=Burner/valve, 1=District Steam
0=Off, 1=On
0 – 36500
0 – 1439, 1440=not set
0 – 1439, 1440=not set
0=Winter, 1=Summer
0=Off, 1=On
-3 – +3°C, -5 – +5°F
0=OFF, 1=ON
0 – 30
21 – 122°C, 70 – 250°F
READ
ONLY
X
♦2
X
X
♦2
X