Toshiba 2000 V Series - Page 109

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4.4 User Function Block for Slave Data Input/Output
4
WRITE_DT Structural data type Output data to slave device
WRITE_DT structure:
WPOL[0] WORD type Polling output data (0)
WPOL[1] WORD type Polling output data (1)
~~ ~
WPOL[127] WORD type Polling output data (127)
WBS[0] WORD type BS output data (0)
WBS[1] WORD type BS output data (1)
WBS[2] WORD type BS output data (2)
WBS[3] WORD type BS output data (3)
READ_DT Structural data type Intput data from slave device
READ_DT structure:
RPOL[0] WORD type Polling input data (0)
RPOL[1] WORD type Polling input data (1)
~~ ~
RPOL[127] WORD type Polling input data (127)
(3) Description of operation
Figure 4-19 Input/Output Data Area Batch Access Function Block Data Input/Output
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. READ_DT Data structural
type
Input data from
slave device
N_RPOL UINT type No. of polling input
words
N_WPOL UINT type No. of polling
output words
WRITE_DT Data
structural type
Output data to
slave device
DN611
Slave device
Polling
Bit strobe
Polling/bit strobe
input data area
Polling output data
area
Bit strobe output
data area
READ_DT
(RPOL)
WRITE_DT
(WPOL)
WRITE_DT
(WBS)
Input data
register area
Output area
register area
S controller