Toshiba DeviceNet nv Series, Инструкция по эксплуатации, Страница: 82 / 159

Chapter 4 Settings
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3) Description of operation
Figure 4-7 Slave Data input Function Block Data Input
a)
Use this function block when the DN611B is in run mode.
b)
The allocation confirmation (DN_INSTRUCT) function block mentioned above is used inside this
function block. Therefore, register the allocation confirmation function block on the product list in
advance.
c)
When REQ is TRUE, input data to the slave device specified in terms of node and BS under
management by the DN611B that is specified by CH, UNIT, and SLOT is read from the polling/bit strobe
input data areas of the DN611, then is output to ASREAD_DT (RDAT[0] to [5]), and DONE is turned
TRUE.
d)
Which of RDAT[0] to [5] will be an actual slave device input depends on the slave device to be used.
Refer to the slave device manual.
e)
Keep REQ TRUE till DONE becomes TRUE.
f)
If an error occurs, ERR and DONE are turned TRUE.
g)
Completion status is output to STATUS.
h)
This function block is compatible with slave devices having receive data of up to 6 words (12 bytes)
allocated. If slave devices have more than 6 words of receive data allocated, use the input/output data
area batch access function block.
type1 light Controller
Input data
register area
DN611B
Plling / Bit strobe
input data area
ASREAD_ST
Slave device
Plling
Bit strobe