Mitsubishi Electric Q80BD-J71BR11, User Manual

Page: 43 / 224

3 - 3 3 - 3
MELSEC
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)
(2) Q80BD-J71BR11
Specifications
Item
Q80BD-J71BR11
LX/LY 8192 Points
LB 16384 Points (When in the MELSECNET/10 Mode
1
: 8192 Points)
Maximum links
in 1 network
LW 16384 Points (When in the MELSECNET/10 Mode
1
: 8192 Points)
Maximum links in 1 station
• MELSECNET/H mode, MELSECNET/10 mode
1
{(LY + LB) / 8 + (2 LW)}
≤
2000 bytes
• MELSECNET/H Extended mode
1
{(LY + LB) / 8 + (2 LW)}
≤
35840 bytes
Communications rate
1
10 Mbps
Number of stations Connected
to 1 network
32 Stations (Control station: 1; normal station: 31)
Connection cable Optical fiber cable Coaxial cable
Total extension cable length in
1 network
Cable name
3C-2V
5C-2V
300 m 2
500 m 2
Total extension
cable length
Length between
stations
5C-FB
Can be extended to 2.5 km (8202.5 ft.) using a repeater unit (A6BR10, A6BR10-DC).
Maximum networks 239
Maximum number of groups 32 (When in the MELSECNET/10 Mode: 9)
Transmission channel format Single Bus
Communications system Token bus system
Synchronization system Frame synchronization system
Encoding system NRZI encoding (Non return to Zero inverted) Manchester encoding
Transfer format HDLC Standard (Frame format)
Error control system CRC (X16 + X12 + X5 + 1) and retry by overtime.
RAS function
• 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.
Transient transmission N:N communications
Special cyclic transmission Low speed cyclic transmission
Number of boards that can be
installed
Maximum 4 boards
Installation slot PC PCI bus slot (half size)
Exclusive slots 1 slot
5 V DC Internal current
consumption
0.67 A
Weight 0.11 kg
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)