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3
Features and Specification of 2D-TZ577 Card
Specification of 2D-TZ577 Card
3
- 8
3.3.2
Transmission Specification
Table 3-
2
Transmission Specification
Item
Specification
Tr
ans
mi
ss
ion
s
pec
ifi
cat
ion
Electrical standard and characteristic
Compliant with EIA
-RS485
Medium
Shielded twisted-pair cable (Type A)
*1
Network configuration
Bus type (tree type when repeater(s) is (are) used)
Communication method
Poll
ing
Transmission encoding method
NRZ
Transmission rate/maximum transmission
range
*2
Transmission rate Transmission range
[m/segment]
Maximum transmission range
with three repeaters being
used [m/network]
9.6kbps
1200
4800
19.2kbps
45.45kbps
93.75kbps
187.5kbps
1000
4000
500kbps
400
1600
1.5Mbps
200
800
3Mbps
100
400
6Mbps
12Mbps
Maximum number of intervening repeaters 3
*2
Maximum number of units connected
(per segment)
32 (including repeater(s))
Number of nodes connected/segment
32
(*1)
Specified in EN 50170 standard
(*2)
Maximum transmission distance achievable by the use of repeaters:
Maximum transmission distance [m/network] = (number of rep 1) x transmission distance
[m/segment]
3.3.3
Network Configuration
When
creating a PROFIBUS DP network, note that the network comes in under the following design limits:
(1)
Number of units that can be connected to the entire network (when repeaters are used)
Slave
≤
126
(2)
Number of units which can be connected to a segment
Slave + repeater
*1
≤
32
(3)
Maximum number of intervening repeaters
Up to 3 repeaters are allowed to intervene in the communication path between Master Station and
2D
-TZ577 Card
(4)
It is necessary
to enable terminator resistors on a dedicated connector installed at the terminal station of
each segment.
(5)
Maximum number of Slave Stations which can be connected to a Master Station depends on the
specification of the Master Station.
(*1)
Repeater is counted in the number of units at each of the segments.
Содержание 2D-TZ577
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Страница 56: ...Feb 2018 MEE Printed in Japan on recycled paper Specifications are subject to change without notice ...