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3. Specifications
3.1 Performance specifications
The table below lists the performance specifications of DN91.The table below lists the
performance specifications of DN91.
Item
Node type
Station numbers which can be set
Number of connections which can be
generated
I/O
communications Receiving
Message
communications Receiving
Communications speed
Maximum cable length *1
Number of input/output
occupied points
Internal current consumption
(5V DC)(A)
Mass(kg)
*1: The maximum cable length complies with that in the DeviceNet specification (Release 2.0) Volumes 1
and 2.
*2: Up to 255 bytes can be transferred per slave station.
3.1.1 Maximum Transmitting Distance when Thick and Thin Cables Coexist
The table below lists both the maximum transmitting distance when thick and thin cables
coexist.
Communications speed
125kbaud
250kbaud
500kbaud
Transmitting
Transmitting
One speed can be selected from 125kbps, 250kbps, and 500kbps.
Communications
speed
125
kbaud
250
kbaud
500
kbaud
Maximum transmitting distance of trunk line when thick
Thick cable length+5×Thin cable length 500m
Thick cable length+2.5×Thin cable length 250m
Thick cable length+Thin cable length 100m
Specifications
Group 2 dedicated client
0 to 63
63 connections for I/O communications
63 connections for message communications
2048 points (256 bytes) *2
2048 points (256 bytes) *2
240 bytes
240 bytes
Maximum transmitting
distance of trunk line
Thick and
Thick
Thin
Cables
Cables
500m
250m
100m
100m
Special 32 points
0.24
A1SJ71DN91: 0.23, AJ71DN91: 0.43
and thin cables coexit
Length of
drop line
Thick and
thin cables
Maximum Total
coexist
See Section
6m
3.1.1
156
m
78m
39m
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