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CHAPTER 3 SPECIFICATIONS
3
3.1 General Specifications
CHAPTER 3 SPECIFICATIONS
This chapter describes the performance specifications, functions, CPU module I/O signals, and buffer memory areas
of an E71.
3.1 General Specifications
For the general specifications of an E71, refer to the following.
"Safety Guidelines", the manual included with the CPU module
3.2 Performance Specifications
The following table lists the performance specifications of an E71.
Item
Specifications
LJ71E71-100
100BASE-TX 10BASE-T
Transmission
specifications
Data transmission speed 100Mbps 10Mbps
Flow control
Full-duplex: IEEE802.3x
Half-duplex: Back pressure congestion
control
Back pressure congestion control
Interface RJ45 (AUTO MDI/MDI-X)
Communication mode Full-duplex/Half-duplex Half-duplex
Transmission method Base band
Maximum segment length
100m (length between a hub and a node)
*1
Maximum number of cascade
connections
Cascade connection (maximum of 2
levels)
*2
Cascade connection (maximum of 4
levels)
*2
Sending/receiving
data storage
memory
Number of simultaneous
open connections
16 connections (Connections usable on a program)
Fixed buffer 1k word 16
Random access buffer 6k words 1
E-mail
Attachment 6k words 1
Main text 960 words 1
Number of occupied I/O points 32 points (I/O assignment: Intelligent 32 points)
Internal current consumption (5VDC) 0.60A
External dimensions 90 (H) 28.5 (W) 95 (D) [mm]
Weight 0.18kg
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