Specifications; Performance Specifications; Optical Loop System Performance Specifications - Mitsubishi Electric QJ71LP21 Reference Manual

3 SPECIFICATIONS

3 SPECIFICATIONS
The following describles 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 shows the performance of the optical loop system.
Table 3.1 Optical loop system performance specifications
Item
QJ71LP21
LX/LY
Maximum 16384 points (Remote master station
LB
number of links
per network
16384 points (Remote master station
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
Distance
cable : 500m
between
H-PCF optical
stations
cable : 1km
10 Mbps Broad-band
H-PCF optical
cable : 1km
QSI optical
cable : 1km
Network cable
Applicable connectors
Maximum number of networks
Transmission method
'Transmission 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 PLC program (READ/WRITE,REMFR/REMTO)
Number of I/O points
3 - 1
Remote master station
QJ71LP21G QJ71LP21GE QJ71LP21-25 QJ71LP21S-25 QJ72LP25-25
station, remote I/O station
station, remote I/O station
Remote I/O station ((LY + LB)/8 + (2
Remote Master Station ((LX + LB)/8 + (2
multiplexed remote sub-master station ((LY + LB) /8 + (2
If the X/Y numbers are duplicate, 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
Optical fiber cable (procured by user)
2-core optical connector plug (procured by user)
239 (Total including PLC to PLC networks)
NRZI code (Non Return to Zero Inverted)
CRC (X
32 points (Intelligent function module: 32 points)
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
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
Duplex loop
Token ring
Frame synchronization
HDCL standards (Frame format)
16 12 5
+ X + X + 1) and retry by timeover
48 points
(I/O Allocation:
vacant; first 16,
intelli.; last 32)
4
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