Specifications

QnA Series Ethernet Modules
47
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Ethernet modules
AJ71QE71, AJ71QE71-B5
Features
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Operates on either of 10BASE5 or 10BASE2.
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TCP/IP, UDP/IP protocol support
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Selection of three communication modes
Fixed buffer communication
Random buffer communication
PLC server function
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UDP/IP broadcasting
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PING function
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Connection through routers
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Fixed buffer communication
AJ71QE71 has eight fixed buffer memories of 1k words
each. With use of these memories, this module can send
and receive up to 1016 word data per transmissions to/from
other PLCs and/or other equipment.
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Broadcasting function
AJ71QE71 can send up to 2046 bytes of data packet to all
other nodes connected on the same Ethernet as an optional
function of UDP/IP protocol. With use of this function,
emergency information or network common information
can be distributed in the network.
Broadcasting data
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PING function
AJ71QE71 can automatically confirm whether the
connected node is still alive, by issuing a PING command
so that the PLC can take recovery action in case the result
of PING is negative.
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FTP server function
AJ71QE71 supports TCP/IP standard FTP (File Transfer
Protocol) function. With this function, a PC can access
QnACPU’s program files, parameter file and other data files
for up/down load.
File 1
Param Prog 1 Prog 2
File 2
AJ71QE71
QnACPU memory
File 1
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Specifications
Item AJ71QE71 AJ71QE71-B5
Interface 10BASE5, 10BASE2 10BASE5
Protocol TCP/IP, UDP/IP
Speed 10 Mbps
Overall distance 10BASE5:2500 m, 10BASE2: 925 m
Segment distance 10BASE5:500 m, 10BASE2: 185 m
No. of nodes per segment 10BASE5:100 , 10BASE2: 30
Min. node distance 10BASE5: 2.5 m, 10BASE2: 0.5 m
Send/receive buffer Fixed buffer: 1k words x 8, Random buffer: 6k words
Cable 10BASE5: Ethernet cable, 10BASE2: RG58A/U
Required accessories
10BASE5: Transceiver, AUI cable, 12VDC power supply
10BASE2: None
EEPROM Up to 10,000 times writing
Occupied I/O points 32
5VDC consumption 0.8A
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