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5.5.3 Function allowing operating/setting at local side
When using a remote controller together to operate air conditioners locally by user, the same function can be
operated/set at both the master system side and the local side. In this case, the "Priority is given to the later
pressing" is a principle. Please carry out to configure the LONWORKS system taking the following into
consideration.
(1) Disagreement of state
O C
IC
IC
IC
MA
LMAP
BMS
[Run] request
Request:[Stop]
State:[Stop]
[Run] state
State
disagreed
Af ter operated f or [Stop] from Building
manage ment sys tem, [Run] is requested
f rom local side.
(2) Periodical transmission from master system
OC
IC
IC
IC
MA
LMAP
BMS
[Run]s but [Stop]s soon
Stop
↓↑
Run
PLC
Lighting
OFF
Interloc ked
w ith lighting
Transmits
periodically
[Stop] request
[Run] reques t
Problem
Disagreement of state may occasionally be detected when setting is changed by the local
side including the local remote controller after operating/setting of the BMS.
Measure taken by BMS side
Avoid detecting for the disagreement of the state.
Problem
When receiving run request from equipment (like PLC) with the function of periodical transmission
(Send Heartbeat), the setting of the local side like remote controllers may not be reflected (or seems
to be not reflected) on the air conditioners.
Measure taken by BMS
side
Try to transmit (renew) a request only at a time of changing.
<Example actions>
- Make the periodical transmission (Send Heartbeat) invalid.
- Fetch it once by the BMS, and renew the variable of LM ADAPTER.
LONWORKS network
LONWORKS network
