ICC Mirius, Installation Instructions Manual

Page: 50 / 56

50
Modbus / Electric Water Heaters
Table 43. ModBus / Electric Water Heaters Register List
Register Name
(Description)
Register
Type R/W Units/Format
Min Value
(if W)
Max Value
(if W)
Differential Bank
3 Holding Register 209 R/W ºC x 512
(ºF)
.6
(1)
11.1
(20)
Differential lBank
4 Holding Register 210 R/W ºC x 512
(ºF)
.6
(1)
11.1
(20)
Differential Bank
5 Holding Register 211 R/W ºC x 512
(ºF)
.6
(1)
11.1
(20)
CCB Control State Input Register 1040 R See Table 44
EMS Mode-Status Holding Register 90 R/W See
Table 44
Fault Code Input Register 1041 R See
Table 46
Alert Code Input Register 1042 R See
Table 46
Number of Banks in Heater Input Register 201 R
Number of Banks Commanded On Input Register 213 R
Bank 1 Status Input Status 3873 R 0=Off
1=On
Bank 2 Status Input Status 3874 R 0=Off
1=On
Bank 3 Status Input Status 3875 R 0=Off
1=On
Bank 4 Status Input Status 3876 R 0=Off
1=On
Bank 5 Status Input Status 3877 R 0=Off
1=On
Element Status Input Register 219 R Bit 0=Element 1
Bit 1=Element 2
.
.
.
Bit 14=Element 14
Tank Full (LWCO Input Status 150 R 0=Open Switch
1=Closed Switch
AC Input 1 T’stat Input Status 3428 R 0=Open
1=Closed
AC Input 2 T’stat Input Status 3429 R 0=Open
1=Closed
Alarm Condition Input Status 3441 R 0=Open
1=Closed
Alarm Relay Status Input Status 3443 R 0=Open
1=Closed
Safety Relay Feedback Input Status 147 R 0=Open
1=Closed
Temperature Probe Open Input Status 65 R 0=False
1=True
Temperature Probe Short Input Status 66 R 0=False
1=True
Temperature Probe ECO Status Input Status 156 R 0=Open
1=Closed
Number of Cycles
2 Input Registers 1000 - 1001 R
Elapsed Time
2 Input Registers 1002 - 1003 R Hours x 100
Elapsed Days
3 Input Register 1004 Days
Elapsed Hours
3 Input Register 1005 Hours
Heating Time
2 Input Registers 1006 - 1007 Hours x 100
Heating Days
3 Input Register 1008 R Days
1. Data is Version (upper 8 bits) and Revision (lower 8 bits).
2. Data stored in two 16 bit registers “Big Endian” (Higher order bits in lower register number)
3. Hours and Days used together derived from Time (hours x 100) i.e. Elapsed Time of 13612.24 hours in “Days” and “Hours” = 567
days, 4 hours.