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1. Ethernet communication (LAN communication Modbus) function 
 
(1) Overview 
● Function for Ethernet communication between the IJ Printer and external unit employing a 
LAN environment. 
● Type of Ethernet communication can be selected from Modbus communication. 
● Modbus communication require development of a communication program on the external 
unit side. 
          For the development purpose of communication program, IJP control library will be provided 
as a development kit. 
 
List of functions 
No. Function name  Description 
1 Modbus 
communication 
Supports Modbus protocol. Because Modbus protocol is one type of 
protocol commonly used by industrial equipment, if Modbus 
communication is employed for other unit, you can create a 
communications program for the external unit using this asset. 
When the communication program is newly developed, its 
development schedule will be shortened with use of IJP control 
library. 
 
 
(2) Configuration diagram 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Standard specifications 
Item Specifications 
Ethernet standards  IEEE802.3 compatible, 10BASE-T, 100BASE-T 
Protocol TCP/IP 
Connection cable  Category 5 UTP or STP cable 
 
 
(3) Notice 
● The time from when the signal is transmitted from an external unit to when the IJ Printer 
receives the signal cannot be strictly defined in the same way as with serial communications. 
Ethernet 
External unit 
IJ Printer