
Chapter 4 Settings
6F8C1686
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3) Description of operation
Figure 4-8 Slave Data Output Function Block Data Output
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, output 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 written from ASWRITE_DT
(WDAT[0] to [5]) into the output data area (polling or bit strobe) of the DN611B, then DONE is turned
TRUE.
d)
The data is written in the type of output data area selected by BS (which, however, must be identical
with that registered by slave parameter setting).
e)
Which of WDAT[0] to [5] will be an actual slave device output depends on the slave device to be used.
Refer to the slave device manual.
f)
Keep REQ TRUE till DONE becomes TRUE.
g)
If an error occurs, ERR and DONE are turned TRUE.
h)
Completion status is output to STATUS.
i)
This function block is compatible with slave devices having send data of up to 6 words (12 bytes) (or 4
words, i.e., 8 bytes, for bit strobe slave devices) allocated. If slave devices have more than 6 words
of send data allocated, use the input/output data area batch access function block.
type1 light Controller
Output data
resister area
DN611B
Polling output
data area
Bit strobe output
data area
Slave Device
Polling
Bit strobe
ASWRITE_DT
ASWRITE_DT
Summary of Contents for DeviceNet nv Series
Page 30: ...Chapter 1 DN611B Introduction 6F8C1686 14 ...
Page 149: ...13 3 133 B Appendix B Outside Dimension ...
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