Performance Specifications - Mitsubishi MELSEC-A Series User Manual

3.
SPECIFICATIONS
MELSEGA
3.2 Performance Specifications
Item
Electrical standards and
characteristics
Cable
Network configuration
Communication protocol
Encoding method
Transmission speed
*'
Maximum transmission
distance
Maximum transmission
distance
Max. number of repeaters
/
network
Max. number of stations / segment
Max. number of slave
/
master station
Number of connected nodes
[number of repeaters)
Transmissible data
Number of occupying I/O points
5
VDC internal current
consumption
Outside dimensions mm(inch)
Weight kg(lb)
Spocifiations
Conforms to EIA-RS485.
Shielded twisted cable
Bus type (however, tree
type
when repeaters are used).'
Token passing (between masters) method
Polling (between master and slave) method
NRZ
Transmission speed (kbps)
Transmission distance (mlsegment)
9.6
19.2
1200
93.75
187.5
500
1000
200 1500
400
4800
m'2
Three
O 3
32
stations
60
stations
32, 62 (l), 92 (2), 126
(3)
32
bytedstation
32
points
1 . 3
A
250 x 37.5
x 1 2 0
(9.84
x
1.48
x
4.72)
0.5
(1.1)
' 1 :
Accuracy
of
transmission speed: within
0.3
%
(PROFIBUS Part
1)
'2: When the transmission speed is no greater than
93.75
kbps and 3 repeaters are used.
' 3 :
Transmission distance (m(ft)/network) can be extended with the use of repeaters.
Transmission distance (m(ft)/network) = (Number of repeaters
+
1) x
Transmission distance (m(ft)/segment)
*4:
For the tree type of network configuration,
see
Fig.3.1.
3-2