Toshiba V Series - Slave Data Input (Asynchronous Mode Only)

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4.4 User Function Block for Slave Data Input/Output
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4.4.3 Slave data input (Asynchronous mode only)
(1) Function
During operation in asynchronous mode, input data to a specified slave device is
read from the input data area of the DN311.
(2) Diagrammatic Representation (Function block)
ASREAD_DT Structural data type Slave device input data
ASREAD_DT structure:
RDAT[0] WORD type Slave device input data 1
RDAT[1] WORD type Slave device input data 2
RDAT[2] WORD type Slave device input data 3
RDAT[3] WORD type Slave device input data 4
RDAT[4] WORD type Slave device input data 5
RDAT[5] WORD type Slave device input 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. ASREAD_
DT
Data
structural type
Input data from
slave device
NODE UINT type Node address
BS WORD type Bit strobe selection
1: Bit strobe
0: Polling
DN_ASREAD
CH
REQ
UNIT
ASREAD_DT
SLOT
NODE
DONE
ERR
STATUS
BS