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APPX
Appendix 1 I/O Signals
Details of output signals
The following shows the output signals of BACnet modules for a CPU module.
Joining of BACnet (Y1)
■ CheckYDevice in the BACnet detail setting is '0'
'Joining of BACnet' (Y1) is not used.
Click the [Restart]/[Pause] button on the "Pause/Restart" screen displayed by selecting [Maintenance] [Pause/Restart] in a
configuration function to join/leave BACnet.
■ CheckYDevice in the BACnet detail setting is '1'
Turn Y1 ON to join a BACnet module to BACnet while 'Initialization complete/operation stop or restart' (X1) is ON.
Turn this signal OFF to leave the BACnet module from BACnet. Even when 'Initialization complete/operation stop or restart'
(X1) is turned OFF, turn this signal OFF because the operation of the BACnet module is requested to be stopped by a
configuration function.
• Set the CheckYDevice in [Settings] [Basic Information] [BACnet Detail Setting] button "Interface". (Page 281
Interface)
COV/Event send prohibit (Y2)
Turn Y2 OFF and ON to prohibit sending COV notifications and Event notifications if an emergency arises.
When sending COV notifications or Event notifications, leave Y2 OFF.
Schedule execution prohibited (Y3)
Turn Y3 OFF and ON to prohibit the execution of a schedule if an emergency arises.
When executing a schedule, leave Y3 OFF.
When this device is turned OFF and ON, the schedule is calculated again. Therefore, an appropriate value for the current time
may be written to the property.
• If the value of Y3 is changed, the value of the ScheduleOutputDisable property of all the Schedule objects registered in a
BACnet module will be changed.
Do not modify the value of Y3 other than the case when setting a ScheduleOutputDisable property using a program.
Time synchronization send request (Y5)
Turn Y5 OFF and ON, and OFF again when sending a TimeSynchronization service or an UTC TimeSynchronization service.
'Time synchronization send complete' (X5) is the interlock condition of Y5. Y5 turns OFF by turning X5 OFF and ON, and OFF
again.
The timing to change the device status is as follows.
To send a TimeSynchronization service or an UTC TimeSynchronization service, set a send target BACnet device to the
TimeSynchronizationRecipients property of a Device object in a BACnet module in advance. (Page 161 To synchronize
the time of another BACnet device)
(1) Sending status of a TimeSynchronization service or an UTC TimeSynchronization service
Y5
(1)
X5
ON
ON
ON
OFF
OFF
OFF
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