Siemens POS8.4420/109 - Page 67

Appendix
Object list
10
A6V11471220_en--_e
67 | 70
the DWH storage tank
once to the ‘Normal’
temperature setpoint.
• Default Value (after
powerup) = 0
• DHWPushUser is a
trigger signal that must
not be sent after a
powerup.
DHWPushUser may
be triggered by user
interaction on the HMI
only.
DHWModeU
ser
51
1
N8Z8 /
DPT_DHWMod
e_Z
R
IR.re
q
DHWModeUser refers
to the process output
property of AB
UDHWSET to change
the DHW user
operating mode via a
Room Unit.
• Supported Z8-States:
OutOfService
• Default Value (after
powerup) =
OutOfService
• DHWModeUser must
not be sent after a
reboot of the Room
Unit. Transmission of
DHWModeUser may
be triggered by user
interaction on the HMI
only.
• Heartbeat: no
=> KNX Standard,
chapter 7/11/3, clause
2.8.4.2 Output
DHWModeUser
DHWModeU
serLocked
15
6
1
B1 / DPT_Bool
RW
W.in
d
DHWModeUserLocke
d refers to the
proprietary input
process signal of AB
UDHWSET to lock or
enable the manual
operation of
DHWModeUser on the
Room Unit.
DHWModeU
serEff
25
4
1
N8Z8 /
DPT_DHWMod
e_Z
R
IR.in
d
DHWModeUserEff
refers to the process
input property of AB
UDHWSET to indicate
the effective user-
request ‘Auto’ or
‘Manual’ for the DHW
operating mode.
• Supported Z8-States:
none (for received PL-
Link message)
• Default Value (after
powerup) of local copy
of property
DHWModeUserEff
= ‘void’, e.g. with Z8
‘OutOfService’
=> local firmware
decision to encode the
‘void’ state
• After a reboot of the
Room Unit the local
copy of property
DHWModeUserEff
remains ‘void’ until the
1st DHWModeUserEff
message is received.
=> KNX Standard,
chapter 7/11/3, clause
2.8.4.7 Input
DHWModeUserEff