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4.4 User Function Block for Slave Data Input/Output
4
4.4.4
Slave data output (Asynchronous mode only)
(1) Function
During operation in asynchronous mode, output data to a specified slave device is written
in the output data area (bit strobe or polling) of the DN611.
(2) Diagrammatic Representation (Function block)
ASWRITE_DT
Structural data typeSlave device output data
ASWRITE_DT structure:
WDAT[0]
WORD type
Slave device output data 1
WDAT[1]
WORD type
Slave device output data 2
WDAT[2]
WORD type
Slave device output data 3
WDAT[3]
WORD type
Slave device output data 4
WDAT[4]
WORD type
Slave device output data 5
WDAT[5]
WORD type
Slave device output data 6
Input Argument
Output Argument
REQ
BOOL type
Execution enabled
DONE
BOOL type
Completed
CH
WORD type
Channel No.
ERR
BOOL type
Error
UNIT
WORD type
Unit No.
STATUS
WORD type Station status
SLOT
WORD type
Slot No.
NODE
UINT type
Node address
BS
WORD type
Bit strobe selection
1: Bit strobe 0:
Polling
ASWRITE_
DT
Data
structural type
Output data to
slave device
DN_ASWRITE
CH
REQ
UNIT
NODE
SLOT
ASWRITE_DT
DONE
ERR
BS
STATUS