Appendices; Appendix 1 Comparison Of Network Module Specifications, And Compatibility; Appendix 1.1 List Of Comparison Between Melsecnet/H And Melsecnet/H Extended Mode And Melsecnet/10 Mode Specifications - Mitsubishi Electric Melsec QJ71LP21 Reference Manual

APPENDICES

APPENDICES

Appendix 1 Comparison of Network Module Specifications, and Compatibility

Appendix 1.1 List of comparison between MELSECNET/H and MELSECNET/H Extended
mode and MELSECNET/10 mode specifications
Table 1 Comparison of specifications among MELSECNET/H mode,
Specification item
Transmission type
I/O (LX, LY)
Maximum number
Link relay (LB)
of link points
Link register (LW)
Maximum number of link points per station
Transient transmission data size
Communication speed
Link scan time
Transmission delay time
Communication method
Overall distance
Distance between stations
Maximum number of networks
Maximum number of groups
Maximum number of connected stations
A
Maximum number of modules installed per CPU
32 bits data assurance
Station-based block data assurance
Transient transmission function
N:N communication (monitor, upload/download, etc.)
Number of data sending/receiving channels
Compatible instructions (SEND, RECV, READ,
SREAD, WRITE, SWRITE, REQ, ZNRD, ZNWR)
RRUN, RSTOP, RTMRD, RTMWR instruction
RECVS instruction
1: The number of LY points of the stations set in the I/O master station is the sum total of the LY points for output to all stations within the block.
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The MELSECNET/H system supports the MELSECNET/H and MELSECNET/H
Extended modes (high functionality/high-speed mode) and the MELSECNET/10 mode
(functional and performance compatibility mode), which are explained in this manual.
When the MELSECNET/10 mode is used, it is easy to make connection with the
AnU/QnA corresponding MELSECNET/10. However, its specifications are different
from those of the MELSECNET/10 mode, as shown in Table 1 below.
Since this manual is written assuming that MELSECNET/H is used in the MELSECNET/H
and MELSECNET/H Extended mode, refer to the "QnA/Q4AR Corresponding
MELSECNET/10 Network System Reference Manual" to use it in the MELSECNET/10
mode.
MELSECNET/H Extended mode and MELSECNET/10 mode
Selected mode
MELSECNET/H mode, MELSECNET/H
[MELSECNET/H mode]
{(LY+LB)/8 + (2
1
[MELSECNET/H Extended mode]
{(LY+LB)/8 + (2
Maximum 1920 bytes/frame
25 Mbps/10 Mbps (from switch setting)
[MELSECNET/H mode, communication speed
KB + (0.45
bytes used by network
Sequence scan time of sending side
+ refresh time of sending side
+ LS
+ sequence scan time of receiving side
+ refresh time of receiving side
[optical loop type (Communication speed 10 Mbps)]
1 km (3281 ft.)
500 m (1640.5 ft.) : When SI cable is used
[coaxial bus type]
500 m (1640.5 ft.) : 5C-2V, 5C-FB
300 m (984.3 ft.)
Total of 4 modules (Basic model CPU, Q00UJCPU, Q00UCPU, Q01UCPU, and safety CPU:
Receive channels: 64
(up to 8 channels when used at the same time)
Send channels: 8
MELSECNET/H network system
Extended mode
Coaxial bus type/optical (SI) loop type
8192 points
16384 points
16384 points
LW)} 2000 bytes
LW)} 35840 bytes
10Mbps]
total stations) + (total number of
0.001) (ms)
1
2
Token bus method [coaxial bus type]/token ring method [optical loop type]
500 m (1640.5 ft.) [coaxial bus type]/30 km (98430 ft.) [optical loop type]
2.5 km (8202.5 ft.) : When 4 repeaters are connected
: When QSI/Broad-band H-PCF/H-PCF cable is used
: 3C-2V
239
32
32 stations (1: control station, 31: normal stations) [coaxial bus type]/
64 stations (1: control station, 63: normal stations) [optical loop type]
1 module)
Supported
Supported
Supported
Available
Available
Available
MELSEC-Q
MELSECNET/10 mode
8192 points
8192 points
{(LY+LB)/8 + (2 LW)} 2000 bytes
Maximum 960 bytes/frame
10 Mbps
KB + (0.75 total number of stations)
+ (total number of bytes used in the network
0.001) (ms)
Sequence scan time of sending side
+ refresh time of sending side
+ LS 2
+ sequence scan time of receiving side
+ refresh time of receiving side
9
Not supported
Supported (Only for stations connected to the
QCPU when the QCPU is the control station)
8 (fixed channels)
Not available
2
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