Format Of Access Blocks For Writing - Mitsubishi Electric MELSEC iQ-R User Manual

Format of access blocks for writing

The following shows the buffer memory format of access blocks for writing, including data ranges and availability of reading/
writing data from a CPU module.
When creating a program, read the offset value in the following table with the start buffer memory address displayed with a
configuration function.
R: Read-only, W: Write-only, R/W: Read/Write
Offset Name
+0 CONTROL
+1 STATUS
+2 to +3 Instance number of a destination
device
+4 to +5 ObjectIdentifier
+6 Property-1
+7
+8 to +11
+12 Property-2
+13
+14 to +17
+18 Property-3
+19
+20 to +23
+24 Property-4
+25
+26 to +29
• Up to 4 write target properties can be set.
• When setting multiple properties, always use the properties in order from Property-1.
• When a Property which is not used exists, store 'FFFFh' to a PropertyIdentifier. The ArrayIndex of the Property and its data
are not written.
APPX
292
Appendix 7 Data Block Formats
Description
Indicates the processing status of a
WritePropertyMultiple(WriteProperty) service.
0: Idling
1: Send request
2: Sending
3; Normal completion
4: Error end
An error code is stored.
Page 236 Error Code List for BACnet Request Function/BACnet
Monitoring Function
Store the instance number of a write target BACnet device.
32-bit unsigned integer
b31 to b22: Object type number
b21 to b0: Instance number
PropertyIdentifier Store the PropertyIdentifier of a write target property.
ArrayIndex When a write target property is ARRAY type, store the index number.
If the data type is not ARRAY, store 'FFFFh'.
Write data A format is RDTB.
Page 289 Format of RDTB
PropertyIdentifier Store the PropertyIdentifier of a write target property.
If no write target property exists, store 'FFFFh'.
ArrayIndex When a write target property is ARRAY type, store the index number.
If the data type is not ARRAY, store 'FFFFh'.
Write data A format is RDTB.
Page 289 Format of RDTB
PropertyIdentifier Store the PropertyIdentifier of a write target property.
If no write target property exists, store 'FFFFh'.
ArrayIndex When a write target property is ARRAY type, store the index number.
If the data type is not ARRAY, store 'FFFFh'.
Write data A format is RDTB.
Page 289 Format of RDTB
PropertyIdentifier Store the PropertyIdentifier of a write target property.
If no write target property exists, store 'FFFFh'.
ArrayIndex When a write target property is ARRAY type, store the index number.
If the data type is not ARRAY, store 'FFFFh'.
Write data A format is RDTB.
Page 289 Format of RDTB
R/W Initial Data range
value
R/W 0 0h to 4h
R 0 0h to 11h
R/W 0 0h to
3FFFFFh
R/W 0 0h to 3FFh
0h to
3FFFFFh
R/W 0 0h to FFFFh
R/W 0 0h to FFFFh
 
R/W
R/W 0 0h to FFFFh
R/W 0 0h to FFFFh
R/W  
R/W 0 0h to FFFFh
R/W 0 0h to FFFFh
 
R/W
R/W 0 0h to FFFFh
R/W 0 0h to FFFFh
 
R/W