Mitsubishi Electric Melsec A Series - Page 216

REPLACEMENT OF CC-LINK
6 - 3
6
(2) QnA/QnAS series
: Compatible, : Partial change required, × : Incompatible
Item
Specifications Compat-
ibility
Precautions for
replacement
AJ61QBT11/A1SJ61QBT11 QJ61BT11N
Transmission speed
Can be selected
from 156kbps/625kbps/2.5Mbps/5Mbps/10Mbps.
Max. cable overall
distance
(Max. transmission
distance)
Differs depending on the transmission speed.
(Refer to the manual.)
Max. number of stations
(For master station)
64 stations
Note that it has to be satisfied with the following conditions.
{(1 × a) + (2 × b) + (3 × c) + (4 × d)} 64
a: Number of 1-station occupied modules
b: Number of 2-station occupied modules
c: Number of 3-station occupied modules
d: Number of 4-station occupied modules
{(16 × A) + (54 × B) + (88 × C)} 2304
A: Number of remote I/O stations 64 stations
B: Number of remote device stations 42 stations
C: Number of local stations, standby master stations and
intelligent device stations 26 stations
Number of occupied
stations
(For local station)
1 to 4 stations (Switched with
DIP switch)
1 to 4 stations (Switched with
GX Works2 or GX Developer
parameter settings)
GX Works2 or GX
Developer parameter
settings are required.
Maximum number of link
points per system
Remote I/O (RX, RY) : 2048 points
Remote register (RWw) : 256 points
Remote register (RWr) : 256 points
Remote station/local
station
Link points per station
Remote I/O(RX, RY) : 32 points (Local station: 30 points)
Remote register (RWw) : 4 points
Remote register (RWr) : 4 points
Communication method Broad cast polling method
Synchronous type Frame synchronization method Flag synchronization method
Nothing to be noted
though the methods are
different.
Encoding method NRZI method
Transmission method Bus (RS-485)
Transmission format HDLC standards
Error control system
CRC (X
16
+ X
12
+ X
5
+ 1)
Connection cable
CC-Link dedicated cable/CC-Link dedicated high-performance
cable/Ver.1.10 compatible CC-Link dedicated cable
Refer to
Section 6.2.2.
RAS function
• Automatic return function
• Slave station detach function
• Error detection with link special relay/register
Number of parameter
registrations to
E
2
PROM
10,000 times -
GX Works2 or GX
Developer parameter
settings are performed
instead of the parameter
registration to E
2
PROM.
Number of occupied I/O
points
32 points (I/O assignment:
special 32 points)
32 points (I/O assignment:
intelli 32 points)