29
BACnet / Electric Water Heaters
Table 22. BACnet/Electric Water Heaters Object List
BACnet
Object Name
(Description)
BACnet
Object
Type/Inst.
BACnet
Object
Property
R/W
Units
Min
Value
(if W)
Max
Value
(if W)
Bank5 On Time
ETH-1000 only
(Time bank has been powered up in Hours
with two place beyond the decimal)
Analog Value 255
Present_Value
R
Hours with two
places beyond the
decimal.
Bank5 On Days
(The amount of time in number of days bank
has been actually heating water)
Analog Value 256
Present_Value
R
Days
Bank5 On Hours
(The hour’s portion of the amount of time bank
has been actually heating water. Use with
Bank5 On Days)
Analog Value 257
Present_Value
R
Hours
Bank 1 Heating Cycles
Analog Value 258
Present_Value
R
Number
Bank 2 Heating Cycles
Analog Value 259
Present_Value
R
Number
Bank 3 Heating Cycles
Analog Value 260
Present_Value
R
Number
Bank 4 Heating Cycles
Analog Value 261
Present_Value
R
Number
Bank 5 Heating Cycles
Analog Value 262
Present_Value
R
Number
EMS Mode-Status
Analog Value 263
Present_Value
R/W
see table 3
Element Status
(Each bit is state a separate element)
Analog Value 264
Present_Value
R
Bit 0 = Element 1
Bit 1 = Element 2
.
.
.
Bit 14 = Element
15
Temp Probe Open
(Temperature Probe open status)
Binary Input 301
Present_Value
R
0 = Okay
1 = Open
Temp Probe Short
(Temperature Probe shorted status)
Binary Input 302
Present_Value
R
0 = Okay
1 = Shorted
Temp Probe ECO Status
(Temperature probe high temperature Energy
Cut Out Status)
Binary Input 313
Present_Value
R
0=Open Switch
1=Closed Switch
Safety Relay Feedback
Binary Input 321
Present_Value
R
0=Open
1=Closed
Tank Full (LWCO)
Binary Input 322
Present_Value
R
0=Open Switch
1=Closed Switch
AC Input1 T’stat
(External Enable 1)
Binary Input 323
Present_Value
R
0=Open
1=Closed
AC Input2 T’stat
(External Enable 2)
Binary Input 324
Present_Value
R
0=Open
1=Closed
Bank1 Output Status
Binary Output 405
Present_Value
R
0=Off
1=On
Bank2 Output Status
Binary Output 406
Present_Value
R
0=Off
1=On
Bank3 Output Status
Binary Output 407
Present_Value
R
0=Off
1=On
Bank4 Output Status
Binary Output 408
Present_Value
R
0=Off
1=On
Bank5 Output Status
Binary Output 409
Present_Value
R
0=Off
1=On
Alarm Condition
Binary Value504
Present_Value
R
0=False
1=True
Output Relay Status
Binary Value 505
Present_Value
R
0=Relay Off
1=Relay On
System In Fault
Binary Value 504
Present_Value
R
0 = Okay
1 = In Fault
0
1
1. Data is encoded into the 16 bits as major revision (upper 8 bits) and minor revision (lower 8 bits).
Summary of Contents for Mirius
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