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Chapter 2 Performance Specifications Comparisons; Performance Specifications Comparison Of Melsec-i/olink And Anywire Db A20 - Mitsubishi Electric MELSEC-I/OLINK Handbook

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2
PERFORMANCE SPECIFICATIONS COMPARISONS
2
2.1 Performance Specifications Comparison of MELSEC-I/OLINK and
AnyWire DB A20
Item
Max. number of
link stations
Per single
master
Max. number of
station
control I/O
(when the same number is used on X
points
Link scan time
(Transmission cycle time)
Overall distance
Communication speed
Error control method
Network Topology
Twisted pair cable (0.75mm
Connection cable
Terminating resistor
(terminator)
External
Voltage
power
supply to
master
Current
module
Number of occupied I/O
(I/O assignment: Output 16/32/64
points of master module
Internal current
consumption of master
module
2
- 1
PERFORMANCE SPECIFICATIONS
2
COMPARISONS
Specifications
MELSEC-I/OLINK
16 stations
(1 station 4 points)
128 points
(when the same number is used on X and Y)
and Y)
Approx. 5.4ms
200m
38.4kbps
Parity check
Bus (T-branch available)
2
),
2
Cabtire cable (0.75mm
)
Not required
21.6 to 27.6VDC
0.5A (When 128 slave modules are connected
0.09A
16, 32, 48, or 64 points
points)
0.115A
: Compatible,
AnyWire DB A20
128 stations
1024 points
*1
2.7ms (for 128 points)
125kHz: 50m
31.3kHz: 200m
7.8kHz: 1km
2kHz: 3km
125kHz/31.3kHz/7.8kHz/2kHz
Double-check system
Bus (Multidrop system, T-branch system,
star system, or tree system)
General-purpose 2-/4-wire cable
2
(VCTF, VCF 0.75 to 1.25mm
),
General-purpose wire (0.75 to 1.25mm
2
Dedicated flat cable (0.75mm
),
(When the transmission distance exceeds
200m, use wires with a diameter of 0.9 to
2
1.25mm
.)
Required
24VDC +15 to -10% (21.6 to 27.6VDC)
Ripple voltage 0.5Vp-p or less
and the load current is not included)
32 points
(I/O assignment: intelligent 32 points)
QJ51AW12D2: 0.5A
LJ51AW12D2: 0.2A
: Partially changed, ×: Not compatible
Com-
Precautions for replace-
pati-
ment
bility
1kHz is equivalent to 1kbps.
Select the speed based on the
existing overall distance.
1kHz is equivalent to 1kbps.
The error control method is
different, but an error check
function is provided.
Crimping terminals can be
used. However, the
2
),
communication lines and
power lines connected to the
master module must be
processed to connect to
terminals.
A terminating resistor is
×
necessary.
Because the external power
supply current has increased,
the current capacity must be
reviewed.
The program and parameters
must be changed.
Internal current consumption of
5VDC must be recalculated.

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