Coaxial Cable System Performance Specifications - Mitsubishi Electric QJ71LP21 Reference Manual

3 SPECIFICATIONS
Item
Voltage
Current
Size of terminal
External
screw
Power
Suitable crimp
Supply
terminal
Suitable cable size
Tightening torque
5 V DC internal current
consumption
Weight
1: The remote master station includes the multiplexed remote master station and multiplexed remote sub-master station.
3
2: On a multiplexed remote I/O network, one of 64 remote I/O stations works as a multiplexed remote sub-master station.
3: The optical fiber cable (A-2P-

3.1.2 Coaxial cable system performance specifications

Table 3.2 Coaxial cable system performance specifications
Item
LX/LY
Maximum LB
number of links
LW
Maximum number of links per
station
Maximum I/O points per remote I/O
station
M
Device points per
SM
remote I/O
D
station
SD
Communication speed
Number of stations per network
3C-2V
Overall distance
5C-2V
Maximum number of networks
Transmission method
Communication method
Synchronization method
Coding method
Transmission format
Error control
RAS functions
Application function
Transient transmission
Maximum number of cards per CPU
Number of I/O points
5 V DC internal current consumption
Weight
1: The remote master station includes the multiplexed remote master station and multiplexed remote sub-master station.
2: On a multiplexed remote I/O network, one of 64 remote I/O stations works as a multiplexed remote sub-master station.
3: There are restrictions on the interstation cable length depending on the number of connected stations. Refer to Section 4.8.2 for
details.
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Remote master station
QJ71LP21 QJ71LP21G QJ71LP21GE
—
—
—
—
—
—
0.55 A
0.11 kg
) differs in interstation distance between the L and H types. Refer to Section 4.8.1 for details.
Table 3.2 shows the performance of the coaxial bus system.
Remote master station
QJ71BR11
16384 points (Remote master station
station, remote I/O station
16384 points (Remote master station
station, remote I/O station
• Remote Master Station Remote I/O station ((LY + LB)/8 + (2
• Remote I/O station Remote Master Station ((LX + LB)/8 + (2
• Multiplexed remote master station
If the X/Y numbers are duplicate, only one side is taken into consideration.
33 stations (Remote master stations: 1
Can be extended up to 2.5 km with the use of a repeater (A6BR10,A6BR10-DC)
• Station separation function due to error detection or cable disconnection
• Diagnostic function for checking local link lines
• Detection using link special relays or link special registers
• Configuring a redundant power supply on a remote I/O station
• Online module change in a remote I/O station
• Remote password for remote I/O station
• 1:1 communication (Monitor, program upload/download, etc.)
• Various send/receive commands from the PLC program (READ/WRITE,REMFR/REMTO)
4 cards
32 points (Intelligent function module: 32 points)
0.75 A
0.11 kg
QJ71LP21-25 QJ71LP21S-25 QJ72LP25-25
20.4 to 31.2 V
DC
0.20 A
M3 Screw
R1.25-3
0.3 to 1.25
2
mm
42 to 50 N•cm
0.22 kg
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
10 Mbps
Remote I/O stations: 32)
300 m (Between stations 300 m)
500m (Between stations 500 m)
239 (Total including PLC to PLC networks)
Single layer bus
Token bus
Frame synchronization
Manchester code
HDCL standards (Frame format)
16 12 5
CRC (X + X + X + 1) and retry by timeover
MELSEC-Q
Remote I/O station
QJ72LP25G QJ72LP25GE
—
—
—
—
—
—
0.89 A
0.15 kg
Remote I/O station
QJ72BR15
1
LW)) ≤ 2000 bytes
2
3
3
—
—
1.10 A
0.16 kg
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