Delta AS Series Manual page 443

Output mapping area (for sending data to
Position of
AS01DNET
on the right
D register
of the PLC
Note: See Section 11.4.5 for further explanation of scan-list node status indication areas and module status indication
areas. The input and output mentioned here are defined in the perspective of the master of the entire fieldbus system.
 When AS01DNET works in slave mode, the input and output mapping areas for AS01DNET at different positions
of the right of AS PLC are listed in the following table.
Position of
AS01DNET on
the right of the
PLC
1 D26100~D26199
D26500 – D26599
2
D26900 – D26999
3
D27300 – D27399
4
11.4.4 Bit-strobe Command
11.4.4.1. Bit-strobe Work Principle
Bit strobe is one of the standard DeviceNet I/O transmission methods. The command length is fixed to 8 bytes, i.e. 64
bits. (Maximum 64 stations exist in a DeviceNet network.) One bit corresponds to one node. The following table takes
the first AS01DNET on the right of AS PLC for example.
Bit-strobe
register
b15
D26100
Node 15
D26101 Node 31
D26102 Node 47
D26103 Node 63
When the value of bit0 of D26100 is 0, node 0 is selected and need return data to the master.
When the values of bit0 and bit1 of D26100 are both 0, node 0 and node 1 are selected and they need return data to the
master.
D6283
b31 b30
In the bit-strobe method, the master does not send control data to the slave node. However, the slave node need return
I/O data to the master if the corresponding bit is set to 0. If the corresponding bit is set to 1, the slave node does not need
to return I/O data to the master.
Ch ap te r 11 De viceNe t M as ter Sca nner Mo du le AS01DN ET-A
the slave)
Mapping area
output data
area
Area for sending data to the master
D register Data length
100 words
100 words
100 words
100 words
Corresponding network node
b14 b13
Node 14 Node 13
Node 30 Node 29
Node 46 Node 45
Node 62 Node 61
b18 b17 b16 b15 b14
Input mapping area (for receiving data from
Data
D register
size
words
Area for receiving data from the master
D register
D26000~D26099
D26400 – D26499
D26800 – D26899
D27200 – D27299
... ...
... ...
... ...
... ...
... ...
D6282
b2
the slave)
Data
Mapping area
size
data area words
Data length
100 words
100 words
100 words
100 words
b1 b0
Node 1 Node 0
Node 17 Node 16
Node 33 Node 32
Node 49 Node 48
b1 b0
Node 0
Node 1
Node 2
Node 14
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