3 - 1 3 - 1
MELSEC-Q
3 SPECIFICATIONS
3 SPECIFICATIONS
This chapter explains the QJ71MT91's performance specifications, I/O signals for
programmable controller CPU, and buffer memory.
For general specifications, refer to QCPU User's Manual (Hardware Design,
Maintenance and Inspection).
3.1 Performance Specifications
This section provides the performance specifications of the QJ71MT91.
Specifications
Item
10BASE-T 100BASE-TX
Reference
Section
Data transmission rate
10Mbps
100Mbps
Transmission method
Base band
Maximum node-to-node distance 200m
(656.16ft.)
Maximum segment length 1 100m
(328.08ft.)
Number of cascade connection stages
Max. 4 stages
Max. 2 stages
Maximum number of connections 2 64
connections
Number of routers that can be set
1 default any 8 routers
Cable
Cable compliant with the
IEEE802.3 10BASE-T
Standard (unshielded
twisted pair cable (UTP
cable), Category 3 (4, 5))
Cable compliant with the
IEEE802.3 100BASE-TX
Standard (shielded
twisted pair cable (STP
cable), Category 5)
Section 2.2
Transmission
specifications
Connector applicable for external wiring
RJ45
Number of slaves 3 64
slaves
Function (for send)
7 functions
Chapter 4
Input area size
4k words
Automatic
communica-
tion function
Output area size
4k words
Section
3.3.1
Number of instructions that
can be executed
concurrently 4
Up to 8 instructions
Function (for send)
MBRW instruction: 9 functions
MBREQ instruction: 19 functions
Chapter 4
Input area size
Max. 253 bytes per instruction
Master
function
Dedicated
instruction
Output area size
Max. 253 bytes per instruction
Chapter 4
Automatic
response
function
Function (for receive)
12 functions
Chapter 4
Coil 64k
points
Input 64k
points
Input register
64k points
Holding register
64k points
MODBUS
R
device size
Extended file register
Max. 4086k points
Section
7.4.1
Slave function
No. of simultaneously acceptable request
messages
64
GX Developer
connection
function
Number of simultaneously connectable GX
Developers
Max. 8 GX Developers
Section
7.2.3
Number of occupied I/O points
32 points
5VDC internal current consumption
0.52A
External dimensions
98 (3.86 in.) (H) 27.4 (1.08 in.) (W)
90 (3.54 in.) (D) [mm]
Appendix 1
Weight
0.11kg
1: Length between a hub and a node.
2: Indicates the number of TCP connections that can be established simultaneously.
3: Indicates the maximum number of slaves that can be communication targets.
4: Indicates the maximum number of dedicated instructions that can be started simultaneously
from a sequence program.
3