Mitsubishi Electric AJ65BT-68TD, Руководство пользователя

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3. SPECIFICATIONS MELSEC-A
3-4
3.3 Temperature/Digital Conversion Characteristics
Since the thermal electromotive force has a non-linear characteristic, it must undergo the linearize
processing before being written in the remote register.
An example of detected temperature characteristic in respect to the thermocouple input value is shown
below.
(1200 °C) 12000
48828 [ µV ]
(1200 °C)
0
0
(0 °C)
(0 °C)
V
The diagram at left is an example
of temperature conversion
characteristic example under
the conditions shown below:
Thermocouple used : JIS K type
Terminal block temperature : 0 [°C]
T
em
pe
ra
tu
re
co
nv
er
si
o
n
va
lu
e
Thermal
electromotive force
Thermocouple
output characteristic
3.4 Maximum Transmission Distance over the CC-Link System
The maximum transmission distance over the CC-Link system is shown below.
1) Regardless of the setting of the transmission speed, the cable length must be "greater than 2 m
(6.6 ft.)" long between a mater or local station, intelligent device station and the adjacent stations.
2) For 5 Mbps and 10 Mbps transmission speeds, the maximum transmission distance will differ
according to the cable length between the remote I/O station and remote device station, so
exercise caution.
Master
station
Remote I/O station
Remote device station Remote I/O station
Remote device station Remote I/O station
Remote device station Remote I/O station
Remote device station
Local station
Standby master
station
Intelligent device
station Local station
Standby master
station
Intelligent device
station
1) 1) 2) 2) 1)
Maximum transmission distance
Maximum transmission
distance
156 kbps 30 cm (11.8 in.) or more 1200 m (3937 ft.)
625 kpbs 30 cm (11.8 in.) or more 600 m (1968.5 ft.)
2.5 Mpbs 30 cm (11.8 in.) or more 200 m (656.2 ft.)
60 cm (23.6 in.) or more 150 m (492.1 ft.)
30 to 59 cm (11.8 to 23.2 in.) 110 m (360.9 ft.)
1 m (3.3 ft.) or more 100 m (328.1 ft.)
10 Mbps 60 to 99 cm (23.6 to 39 in.) 80 m (262.5 ft.)
30 to 59 cm (11.8 to 23.2 in.) 50 m (164 ft.)
2) 1) Transmission speed
2 m (6.6 ft.) or more 5 Mbps
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