Specifications
46
MELSECNET I/O LINK
■
Flexible configuration
Numbers of I/O points of the remote I/O modules are kept
small so that just the necessary number of I/O signals are
distributed to locations where control devices are located.
In addition, no terminal resistance requirement and the T
shape branch feature give maximum flexibility of con-
figuration and layout.
■
High reliability
Bus topology of MELSEC-I/O LINK gives the advantage of
high reliability. Shutdown of one remote I/O module
doesn't affect the communications of the others.
■
AJ51T64 master module specifications
Number of maximum control I/O points
128 I/O points using 8-point I/O combination modules,
64 points using any mix of I/O modules
I/O refresh time Approx. 5.4msec
External supply voltage 21.6 to 27.6VDC
Transmission speed 38.4k bps (actual 19.2k bps)
Transmission path Bus (multidrop) form, terminal resistor not required, T-shaped branch connection allowed
Overall distance Maximum 200m (656.2 ft)
Maximum number of stations 16 stations per master
Communication cable specification Twisted pair cable or cabtyre cable of minimum 0.5mm
2
thickness
Number of I/O points required 64
Current consumption (5VDC) 115mA
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Remote input module specifications
Model name Type
No. of
Insulation
Rated Rated
Operation voltage (V) Operation voltage (V)
Connection Points per No. of
points voltage current
ON OFF ON OFF
type common
stations
AJ55TB3-4D
DC input
4 41
AJ55TB3-8D
Sink/source
8 82
AJ55TB3-16D 16 16 4
AJ55TB32-4DT
DC input
2 21
AJ55TB32-8DT
sink
4
Photocoupler
24VDC 7mA 14 6 10 10 Terminal block 4 1
AJ55TB32-16DT 8 82
AJ55TB32-4DR
DC input
2 21
AJ55TB32-8DR
Sink/source
4 41
AJ55TB32-16DR 8 82
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Remote output module specifications
Model name Type
No. of
Insulation
Rated Rated
Operation voltage (V)
Connection
Points per No. of
points voltage current
ON OFF
type common
Stations
AJ55TB2-4T
Transistor
4 0.5A/pt, 2A/com 4
Zenner
1
AJ55TB2-8T
sink
8
Photocoupler
12/24VDC
0.5A/pt, 4A/com 2 2 8
diode
2
AJ55TB2-16T 16 0.5A/pt, 8A/com 16 4
AJ55TB2-4R 4
24VDC
41
AJ55TB2-8R Relay 8 Relay
240VAC
2A/pt, 8A/com 10 12 8 None 2
AJ55TB2-16R 16 Terminal 16 4
AJ55TB32-4DT
Transistor
2 0.5A/pt, 1A/com block 2
Zenner
1
AJ55TB32-8DT
sink
4
Photocoupler
12/24VDC
0.5A/pt, 2A/com 2 2 4
diode
1
AJ55TB32-16DT 8 0.5A/pt, 4A/com 8 2
AJ55TB32-4DR 2
24VDC
2A/pt, 4A/com 2 1
AJ55TB32-8DR Relay 4 Relay
240VAC 2A/pt, 8A/com
10 12 4 None 1
AJ55TB32-16DR 8 82
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