Mitsubishi Electric MELSEC iQ-R - Page 97

1 FUNCTIONS
1.1 BACnet Object Function
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Settings using a program
The property values in a BACnet module can be changed by writing values to the buffer memory using a program.
■ Settings at normal operation
1. Write a value to the PresentValue.
2. Write the CONTROL whose OutOfService and Reliability are '0'. (No writing is required when '0' has already been
written.)
■ To change an OutOfService property to True
1. Write the CONTROL whose OutOfService is '1' to the buffer memory.
Precautions
• When the OutOfService is '1', the PresentValue and the Reliability are not used.
• Leave the OutOfService of the CONTROL '1' until the OutOfService of the StatusFlags becomes '1' (1 second or more).
■ To change an OutOfService property from True to False
1. Write a value to the PresentValue.
2. Write the CONTROL whose OutOfService value is '0' and Reliability value is an appropriate one.
Precautions
• When the Reliability is other than '0', writing a value to the PresentValue is unnecessary.
• Leave the OutOfService of the CONTROL '0' until the OutOfService of the StatusFlags becomes '0' (1 second or more).
■ Settings for a Reliability property at error occurrence
1. Write the CONTROL whose OutOfService is '0' and Reliability is other than '0'.
■ Another setting
Manage the data of the following properties with a program. If any changes are made, write the changed data to the buffer
memory.
• Level_Value property