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Mitsubishi Electric Artisan MELSEC-Q Series Manual Page 88

General-purpose programmable controllers, large/small.
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(2) Specifications of MELSECNET/H (PLC to PLC network)
The following table shows the specifications of twisted bus type MELSECNET/H (PLC to PLC network).
Item
Maximum number of
link points per network
Maximum number of link
points per station
Communication speed
Number of stations per network
Connection cable
Overall distance for one network
(3) Usable twisted pair cable for twisted bus type (Same specifications as those of MELSECNET/B)
The following table shows the specifications of twisted pair cable that can be used for twisted bus type
MELSECNET/H (PLC to PLC network)*.
Item
Cross section
Cable
Core
Conductor resistance (20˚C)
Insulation resistance (20˚C)
Dielectric withstand voltage V-min
Capacitance (1 kHz)
Characteristic impedance (100 kHz)
* The cable terminal (the part where it connects to the module) is a bar solderless terminal.
When utilizing MELSECNET/B twisted pair cable, solderless terminals need to be changed
to bar solderless terminals. For details on the bar solderless terminal and tools dedicated to it,
refer to "Q corresponding MELSECNET/H Network System Reference Manual
(PLC to PLC network)": SH-080049.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
MELSECNET/H(PLC to PLC network)Twisted bus type
LX/LY
LB
LW
•MELSECNET/H mode
•MELSECNET/H Extended mode
156 kbps/312 kbps/625 kbps/1.25 Mbps/2.5 Mbps/5 Mbps/10 Mbps
Up to 32 stations (1 control station, 31 normal stations)
Twisted pair cable or CC-Link Ver.1.10-compatible cable
Communication speed
156 kbps
312 kbps
625 kbps
1.25 Mbps
2.5 Mbps
5 Mbps
10 Mbps
KNPEV-SB 0.5SQ x 1P (Applicable only when the communication speed is 1.25 Mbps or less.)
85
4.1 Replace MELSECNET(ΙΙ) with MELSECNET/10
QJ71NT11B
8192 points
16384 points
16384 points
{(LY + LB) / 8 + (2 × LW)} ≤ 2000 bytes
{(LY + LB) / 8 + (2 × LW)} ≤ 35840 bytes
(Switched by network parameters)
Twisted pair cable
CC-Link Ver.1.10-compatible cable
1200 m
600 m
400 m
200 m
-
(Not applicable)
Blue
White
Shielded twisted pair cable
2-core
39.4 Ω/km or less
10 MΩ/km or more
1000 V AC 1 minute
70 nF/km or less on average
110 ± 10 Ω
1200 m
900 m
600 m
400 m
200 m
150 m
100 m

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