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3 SPECIFICATION
MELSEC-QnA
3.2 Performance Specifications
The performance specifications of the CC-Link is shown in Table 3.2.
Table 3.2 Performance specifications
Item AJ61QBT11 A1SJ61QBT11
Transmission speed Can select from 156 kbps/ 625 kbps/ 2.5 Mbps/ 5 Mbps/ 10 Mbps
Maximum overall cable distance
(Maximum transmission distance)
Different from the transmission speed: (Refer to Section 3.2.1, 3.2.2)
Maximum number of connected modules
(when master station)
64 modules
However, the following conditions must be satisfied:
{(1×a) + (2×b) + (3×c) + (4×d)}
64
a: number of modules occupying 1 station
b: number of modules occupying 2 stations
c: number of modules occupying 3 stations
d: number of modules occupying 4 stations
{(16×A) + (54×B) + (88×C)} 2304
A: Number of remote I/O stations
64
B: Number of remote device stations
42
C: Number of local stations,
standby master stations,
intelligent device stations
26
Number of occupied stations
(when local station)
1 to 4 stations
1 (switched using DIP switch)
Maximum link points for one system
Remote I/O (RX, RY) : 2048 points
Remote register (RWw) : 256 points (master station
remote/local station)
Remote register (RWr) : 256 points (remote/local station
master station)
Link points for one remote/local station
Remote I/O (RX, RY) : 32 points (local station: 30 points)
Remote register (RWw) : 4 points (master station
remote/local station)
Remote register (RWr) : 4 points (remote/local station
master station)
Communication method Broadcast polling method
Synchronous method Frame synchronous method
Encoding method NRZI method
Transmission path Bus (RS-485)
Transmission format HDLC standard
Error control system
CRC (X
16
+ X
12
+ X
5
+ 1)
Connection cable
2
CC-Link dedicated cable (Ver.1.00)/CC-Link dedicated high performance cable/Version
1.10 compatible CC-Link dedicated cable
RAS function
• Automatic return function
• Slave station cutoff function
• Error detection by the link special relay/register
Number of parameter registration to E
2
PROM
10,000 times
I/O occupied points 32 points (I/O allocation: 32 special points)
Internal current consumption (5VDC) 0.45 A 0.4 A
Weight 0.4 kg 0.25 kg
1: The AJ61QBT11 of hardware version F or later and the A1SJ61QBT11 of hardware version G or later are compatible with this setting.
For other than the above, the setting is 1 or 4 stations only.
2: Each of Ver.1.10 compatible CC-Link cables, CC-Link dedicated cables (Ver.1.00), and CC-Link dedicated high performance cables
must not be used together with other cable types.
If different cable types are used together, normal data transmission is not guaranteed.
Also attach the terminating resistor which matches the kind of the cable. (Refer to section 7.5)