Modbus Parameters - Tekmar Snow Melting Control 680 Integration Manual

Modbus Parameters

Read = R
Register Parameter Name
Input Registers (Starts at 40,000)
1 Model
2 Firmware Revision
3 Application Version
4 Error Code
5 Operation
6 Operation Status
7 Manual Melt Time Remaining
8 Additional Melt Time Remaining
9 Outdoor Air Temperature
10 Slab 1 Temperature
11 Slab 1 Water
12 Slab 2 Temperature
13 Slab 2 Water
14 Coldest Slab Temperature
15 Slab Target Temperature
16 Combined Water Status
17 Boiler Supply
18 Boiler Return
19 Boiler Target
20 Boiler Output
21 System Supply
22 System Return
23 Mix System Target
24 Mix System Output
25 System Pump
26 Primary Pump
27 Boiler Pump
28 System Flow Rate
29 System Pressure
30 PWM and Electric Heat Output
31 Melting Energy (low word)
32 Melting Energy (high word)
A Watts Water Technologies Company
Read/Write = R/W
Read/
Write
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
6 of 8
Units Type Format Range
Enum Input U16
Enum Input U16
Enum Input U16
Enum Input U16
Enum Input U16
Enum Input U16
Minutes Input U16
Minutes Input U16
°F Input S16
°F Input S16
Enum Input U16
°F Input S16
Enum Input U16
°F Input S16
°F Input S16
Enum Input U16
°F Input S16
°F Input S16
°F Input S16
% Input U16
°F Input S16
°F Input S16
°F Input S16
% Input U16
Enum Input U16
Enum Input U16
Enum Input U16
GPM Input U16
PSI Input U16
% Input U16
Therms Input U16
Therms Input U16
680
SVN revision
Software (A= 1, B = 2, ...
Z = 26)
See Error Codes list
0 = Off,
1 = Idle,
2 = Storm,
3 = Melt
0 = Normal,
1 = WWSD,
2 = CWSD,
3 = Timed Melting,
4 = Warming Up,
5 = Pending
0 to 1440 minutes
0 to 360 minutes
-67 to 149°F
-58 to 167°F
0 = Dry, 1 = Wet
-58 to 167°F
0 = Dry, 1 = Wet
-58 to 167°F
20 to 120°F
0 = Dry, 1 = Wet
-31 to 266°F
-31 to 266°F
50 to 230°F
0 to 100%
-31 to 266°F
-31 to 266°F
50 to 230°F
0 to 100%
0 = Off, 1 = On
0 = Off, 1 = On
0 = Off, 1 = On
0 to 1000 US GPM
0 to 300 psi
0 to 100%
0 to 65535
0 to 65535
© 2015 680_B - 10/15