Documentation

MbusDataTableInterfacewriteFileRecord Method

Override this method to implement a Data Provider function to write File Records which is Modbus function code 21 (15 hex).

Namespace:  FieldTalk.Modbus.Slave
Assembly:  FieldTalk.Modbus.Slave (in FieldTalk.Modbus.Slave.dll) Version: 2.11.0-eval+eb1ecbe71c969eff5d7c05d58da16dade0474678
Syntax
Copy
protected virtual bool writeFileRecord(
	int refType,
	int fileNo,
	int startRef,
	short[] regArr
)

Parameters

refType
Type: SystemInt32
Reference type (typically this is 6)
fileNo
Type: SystemInt32
File number (typically 0, 1, 3 or 4)
startRef
Type: SystemInt32
Record Number (equivalent to the start register)
regArr
Type: SystemInt16
Buffer which contains the received data

Return Value

Type: Boolean
true indicates a successful access. The Server Engine will send a positive reply to the master.

false indicates that access has been denied or is out of range. The Server Engine will reply to the master with an exception reply message

Remarks
When a slave receives a write request for function code 21 it calls this method to pass the data to the application.

Required: No

Default Implementation: Returns false which indicates to Server Engine that this address range is unsupported.

See Also