Mitsubishi Electric LMAP03U Technical Manual page 29

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
Problem
Measure taken by BMS side
(2) Periodical transmission from master system
Problem
Measure taken by BMS
side
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.
Avoid detecting for the disagreement of the state.
Reques t:[Stop]
State:[Stop]
LMAP
O C
IC
MA
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.
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.
Interloc ked
w ith lighting
LONWORKS network
LMAP
OC
[Stop] reques t
Stop
↓↑
IC
Run
[Run] reques t
MA
BMS
State
dis agreed
LONWORKS network
[Run] s tate
Af ter operated f or [Stop] from Building
manage ment s y s tem, [Run] is reques ted
f rom loc al s ide.
IC IC
[Run] reques t
Trans mits
periodic ally
Lighting
IC IC
[Run]s but [Stop]s s oon
26
BMS
PLC
OFF