Mitsubishi Electric SW0DNC-MNETH-B User Manual page 43

3 SPECIFICATIONS
1: The CPU usage may be higher compared to that of Q80BD-J71LP21-25, Q80BD-J71LP21S-25, Q80BDJ71LP21G,
Q80BD-J71LP21GE, or Q80BD-J71BR11. (For the solutions to slow PC performance, refer to Section 14.8.)
2: MELSECNET/H board communications rate and Mode settings are performed using the MNETH Utility.
(For details, refer to Section 9.2.3)
3: L type and H type of the previous optical fiber cable (A-2- ) differ in the distances between stations. (For details, refer
to Section 6.4.1)
Item
LX/LY
Maximum links
LB
in 1 network
LW
Maximum links in 1 station
1
Communications rate
Number of stations Connected
to 1 network
Connection cable
Total extension cable length in
1 network
Maximum networks
Maximum number of groups
Transmission channel format
Communications system
Synchronization system
Encoding system
Transfer format
Error control system
RAS function
Transient transmission
Special cyclic transmission
Number of boards that can be
installed
Installation slot
Exclusive slots
5 V DC Internal current
consumption
Weight
1: MELSECNET/H board communications rate and Mode settings are performed using the MNETH Utility.
(For details, refer to Section 9.2.3)
2: Depending on the number of stations connected, there are limits to the cable length between stations. (For details, refer
to Section 6.4.2)
3 - 3
(2) Q80BD-J71BR11
16384 Points (When in the MELSECNET/10 Mode
16384 Points (When in the MELSECNET/10 Mode
• MELSECNET/H mode, MELSECNET/10 mode
LW)} ≤ 2000 bytes
{(LY + LB) / 8 + (2
• MELSECNET/H Extended mode
LW)} ≤ 35840 bytes
{(LY + LB) / 8 + (2
Can be extended to 2.5 km (8202.5 ft.) using a repeater unit (A6BR10, A6BR10-DC).
NRZI encoding (Non return to Zero inverted)
• Loop back function (optical loop system only) by abnormal detection and cable disconnection.
• System down prevention through control station.
• Error detection by the link special relay and link special register.
etc.
Specifications
Q80BD-J71BR11
8192 Points
1
1
10 Mbps
32 Stations (Control station: 1; normal station: 31)
Optical fiber cable
Total extension
Cable name
cable length
3C-2V 300 m
5C-2V
500 m
5C-FB
239
32 (When in the MELSECNET/10 Mode: 9)
Single Bus
Token bus system
Frame synchronization system
HDLC Standard (Frame format)
CRC (X16 + X12 + X5 + 1) and retry by overtime.
N:N communications
Low speed cyclic transmission
Maximum 4 boards
PC PCI bus slot (half size)
1 slot
0.67 A
0.11 kg
1
: 8192 Points)
1
: 8192 Points)
Coaxial cable
Length between
stations
2
2
Manchester encoding
MELSEC
3 - 3