Toshiba DeviceNet nv Series, Instruction Manual, Page: 78 / 159

Chapter 4 Settings
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a)
Use this function block when the DN611B is in run mode.
b)
When REQ is TRUE, data is input and output to and from the DN611B specified by CH, UNIT, and
SLOT. Data from two or more slave devices can be sent or received because an input/output data
area can be specified.
c)
Of the output data to the slave device written in WRITE_DT, the number of words corresponding to
N_WPOL are written in the polling output data area of the DN611B and 4 words (fixed) in its bit strobe
output data area.
WPOL[0] to WPOL[127] amd WBS[0] to WBS[3] correspond to the polling output data area/bit strobe
output data areas as shown in the table below.
Write them as appropriate to the specifications of the slave devices you are using.
Table 4-3 WRITE_DT Composition
Output Data Output Area Address
WPOL[0] 0080H
~ ~
WPOL[127] 0FFH
WBS[0] 0100H
~ ~
WBS[3] 0103H
d)
Of the data input to a slave device and read into the polling/bit strobe input data area of the DeviceNet
module, the number of words corresponding to N_RPOL are read to READ_DT.
RPOL[0] to RPOL[127] corresponding to the polling/bit strobe input data areas as shown in the table
below.
Table 4-4 READ_DT Composition
Input Data Input Area Address
RPOL[0] 0000H
~ ~
RPOL[127] 007FH
e)
Keep REQ TRUE till DONE turns TRUE.
f)
In using this function block in synchronous mode, the input output semaphore of the DN611B are used
by just one function block, so do not use two or more of this function block per program for the same
DN611.
g)
ERR and DONE are turned TRUE if an error occurs, for example.
h)
Completion status is output to STATUS.
i)
If REQ is FALSE, both DONE and ERR turn FALSE.
j)
When this function block is started (when REQ is turned TRUE), keep REQ TRUE till DONE becomes
TRUE.