Performance Specifications; Optical Loop System Performance Specifications - Mitsubishi Electric MELSEC Q Series Reference Manual

3 SPECIFICATIONS
3 SPECIFICATIONS
The following describes the network system specifications, performance specifications
and the specifications for sending and receiving link data.
For general specifications, refer to the user's manual of the CPU module to be used on
the network system.

3.1 Performance Specifications

3.1.1 Optical loop system performance specifications

Table 3.1 lists the performance of the optical loop system.
Table 3.1 Optical loop system performance specifications
Item
QJ71LP21
LX/LY
Maximum
LB
number of links
per network
LW
• Remote Master Station
Maximum number of links per
• Remote I/O station
station
• Multiplexed remote master station
Maximum I/O points per remote
I/O station
M
SM
Device points per
remote I/O station D
SD
Communication speed
Number of stations per network
Overall distance
25 Mbps
SI optical
cable :
Distance
500m H-PCF
between
optical cable :
stations 3
1km Broad-
10 Mbps
band H-PCF
optical cable :
1km QSI
optical cable :
1km
Network cable
Applicable connectors
Maximum number of networks
Transmission path format
Communication method
Synchronization method
Coding method
Transmission format
Error control
• Loop-back function due to error detection or broken cable
• Diagnostic function for checking local link lines
RAS functions • Detection using link special relays or link special registers
• Backup of power supply on a remote I/O station
• Online module change in a remote I/O station
Application function • Remote password for remote I/O station
• 1:1 communication (Monitor, program upload/download, etc.)
Transient transmission
• Various send/receive commands from the programmable controller program (READ/WRITE,REMFR/REMTO)
3 - 1
Remote master station
QJ71LP21G QJ71LP21GE QJ71LP21-25 QJ71LP21S-25 QJ72LP25-25
16384 points (Remote master station
station, remote I/O station
16384 points (Remote master station
station, remote I/O station
Remote I/O station ((LY + LB)/8 + (2
Remote Master Station ((LX + LB)/8 + (2
If the X/Y numbers are the same, only one side is taken into consideration.
10 Mbps
65 stations (Remote master stations: 1
—
GI-50/125 GI-62.5/125
optical cable optical cable :
: 2km 2km
2-core optical connector plug (procured by a user)
CRC (X
8192 points
remote sub-master station, remote I/O station: 8192 points, remote sub-master
remote master station: 8192 points)
remote sub-master station, remote I/O station: 8192 points, remote sub-master
remote master station: 8192 points)
LW))  1600 bytes
LW))  1600 bytes
multiplexed remote sub-master station ((LY + LB) /8 + (2
X + Y  4096 points
8192 points
2048 points
12288 points
2048 points
25 Mbps /10 Mbps /
(selected with MODE switch)
Remote I/O stations: 64)
30 km
SI optical cable : 200m
H-PCF optical cable : 400m
Broad-band H-PCF
optical cable : 1km QSI optical cable : 1km
SI optical cable: 500m H-PCF optical cable:
1km Broad-band H-PCF optical cable:
1km QSI optical cable: 1km
Optical fiber cable (procured by a user)
239 (Total including PLC to PLC networks)
Duplex loop
Token ring
Frame synchronization
NRZI code (Non Return to Zero Inverted)
HDCL standards (Frame format)
16 12 5
+ X + X + 1) and retry by timeover
MELSEC-Q
Remote I/O station
QJ72LP25G QJ72LP25GE
1
LW))  2000 bytes
10 Mbps
2
—
GI-50/125 GI-62.5/125
optical cable : optical cable :
2km 2km
3
3 - 1
3