Siemens MD-BMS - Page 107

Appendices
Appendix I
-
Core Measurement Parameters: Voltage, Current, an
d Frequency
107
Building Technologies 125-202
06/06/2017
Measurement Parameters: Voltage, Current and Frequency BACnet
Object
Identifier
Modbus
Register
Modbus
Offset
(Offset to a Base of
40001)
Amps - Current
System Current Average (Amps Sys)
= amps sys, signed, average of all phases, in Amps, BACnet
= amps sys value, unsigned, average of all phases, in Amps
= positive amps sys, same data as above, copied here as a convenience
= negative amps sys, same data as above, copied here as a convenience
4010
‒
‒
‒
‒
44016
46016
47016
‒
4015
6015
7015
Individual Phase Current – L1 (Amps L1)
= phase L1 amps, signed, individual L1 phase current, in Amps, BACnet
= phase L1 amps value, unsigned, individual L1 phase current, in Amps
= positive phase L1 amps, signed, individual L1 phase current, in Amps, BACnet
= negative phase L1 amps, unsigned, individual L1 phase current, in Amps
4020
‒
‒
‒
‒
44056
46056
47056
‒
4055
6055
7055
Individual Phase Current – L2 (Amps L2)
= phase L2 amps, signed, individual L2 phase current, in Amps, BACnet
= phase L2 amps value, unsigned, individual L2 phase current, in Amps
= positive phase L2 amps, same data as above, copied here as a convenience
= negative phase L2 amps, same data as above, copied here as a convenience
4030
‒
‒
‒
‒
44057
46057
47057
‒
4056
6056
7056
Individual Phase Current – L3 (Amps L3)
= phase L3 amps, signed, individual L3 phase current, in Amps, BACnet
= phase L3 amps value, unsigned, individual L3 phase current, in Amps
= positive phase L3 amps, same data as above, copied here as a convenience
= negative phase L3 amps, same data as above, copied here as a convenience
4040
‒
‒
‒
‒
44058
46058
47058
‒
4057
6057
7057
Measurement Parameters: Voltage, Current and Frequency BACnet
Object
Identifier
Modbus
Register
Modbus
Offset
(Offset to a Base of
40001)
Hz. – Line Frequency
Measured Line Frequency (Hz)
= line freq, unsigned, measured line frequency, in Hz, BACnet
= line freq value, unsigned, line freq × 10 (for example, 602 = 60.2 Hz).
On startup, 20 point averaging array is filled with the first data read
= positive line freq, same data as above, copied here as a convenience
= negative line freq, same data as above, copied here as a convenience
1000
‒
‒
‒
‒
44022
46022
47022
‒
4021
6021
7021