Mitsubishi Electric MELSEC-Q Series - Appendix 4 Comparison between CC-Link IE Controller Network and MELSECNET;H; Appendix 4.1 Comparison of Specifications

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Appendix 4 Comparison Between CC-Link IE Controller
Network and MELSECNET/H
This section describes the comparison of specifications between the CC-Link IE Controller Network and the
MELSECNET/H, precautions for system replacement, and precautions for program replacement.
Replace the system according to the description of this section.
Appendix 4.1 Comparison of specifications
The following describes the comparison of specifications between the CC-Link IE Controller Network and the
MELSECNET/H.
(1) Comparison of performance specifications
The transmission of the CC-Link IE Controller Network is made by the optical loop system only.
When the coaxial bus system is used in the MELSECNET/H, consider to replace it with an optical loop system.
The following shows the comparison of optical loop systems in the CC-Link IE Controller Network and the
MELSECNET/H.
Item CC-Link IE Controller Network MELSECNET/H
Maximum
link points
per network
LB
32K points (32768 points, 4K bytes)
(16K points (16384 points, 2K bytes) for Basic
model QCPU or safety CPU)
16K points (16384 points, 2K bytes)
LW
128K points (131072 points, 256K bytes)
(16K points (16384 points, 32K bytes) for Basic
model QCPU or safety CPU)
16K points (16384 points, 32K bytes)
LX 8K points (8192 points, 1K byte)
LY 8K points (8192 points, 1K byte)
Maximum
link points
per station
LB
16K points (16384 points, 2K bytes)
Extended Mode: 32K points (32768 points, 4K
bytes)
• For MELSECNET/H or MELSECNET/10 mode,
{(LY + LB)  8 + (2 × LW)}  2000 bytes
• For MELSECNET/H extension mode,
{(LY + LB)  8 + (2 × LW)}  35840 bytes
LW
16K points (16384 points, 32K bytes)
Extended Mode: 128K points (131072 points,
256K bytes)
LX 8K points (8192 points, 1K byte)
LY 8K points (8192 points, 1K byte)
Transient transmission capacity Max. 1920 bytes
Communication speed 1Gbps 25Mbps/10Mbps
Number of stations per network
• When Universal model QCPU is used for
control station: 120 (Control station: 1, Normal
station: 119)
• When other than Universal model QCPUs is
used for control station: 64 (Control station: 1,
Normal station: 63)
64 stations (Control station: 1, normal station: 63)
connection cable
Optical fiber cable (Multimode fiber)
( Page 38, Section 2.2.1)
Optical fiber cables used for MELSECNET/H
cannot be used.
Optical fiber cable
Overall cable distance 66000m (When connecting 120 stations) 30000m