heat-timer MPC Platinum - Page 42

42
MPC Platinum Installation and Operation Manual
HT# 059085-00 F
MPC
Platinum REG
/ VARIABLE#
MULT
1
(if not 1)
UOM
READ
ONLY
28
DESCRIPTION
Night Heat Adjustment
RANGE / STATES / SPECIAL
VALUES
0 – 15 = A – P
29 Outdoor Night Cutoff °C, °F -6 – 38°C, 20 – 100°F
30 Outdoor Sensor °C, °F
-40 – 122°C, -40 – +250°F
(32000=Open, 32001=Shorted)
♦2
X
31 Outdoor Sensor Trim °C, °F -3 – +3°C, -5 – +5°F
32 Operation Mode 0=Burner/valve, 1=District Steam
33 Output Relay 0=Off, 1=On X
34 Panel Date
Days since
1/1/1981
0 – 36500
35 Panel Time
Minutes
since 0:00
0 – 1439, 1440=not set
36 through 91 Day/Night Schedules
Minutes
since 0:00
0 – 1439, 1440=not set
92 Season 0=Winter, 1=Summer
93 Day/Night Shift
0=To-Day, 1=To-Night, 2=Extend-
Day, 3=To-Schedule
94 System Run-on Minutes 0 – 60
95 System Sensor °C, °F
-40 – 122°C, -40 – +250°F
(32000=Open, 32001=Shorted)
♦2
X
96 System Relay 0=Off, 1=On X
97 System Sensor Trim °C, °F -3 – +3°C, -5 – +5°F
98 Thermal Lockout Enable 0=OFF, 1=ON
99 District Steam Delay Minutes 0 – 30
100 System Setpoint °C, °F 21 – 122°C, 70 – 250°F
MPC Platinum Notes
 If specied, divide a read value by this to obtain the actual value – Multiply desired value by this before writing.
 For variables that specify them, if a read value is a special value (32000 - 32005), do not divide by ‘MULT'.
 Strings are packed 2 characters per register, most signicant byte rst.
 Multi-register values are stored big endian (rst register x 65536 + second register = value).
 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.
 All variables with multiple UOM’s depend upon the value of ‘Input Mode’ to determine which to use.
 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.
 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.
 The MPC Platinum has a schedule, which is 7-days, 4 day/night pairs per day. For example: Register
38 is the rst DAY schedule of Monday; Register 39 is the rst NIGHT schedule of Monday; Register 46
is the rst DAY schedule of Tuesday; Register 47 is the rst NIGHT schedule of Tuesday and so on.
 Use MPC Platinum Installation and Operation manual for supplementary information.