Hitachi EH-150 Series Applications Manual page 14

Chapter 1 Introduction
 Exclusive protocol for H / EH series (Hi-Protocol) is supported.
EH-SIO can communicate with HMI (Human Machine Interface) which is supports H / EH series communication
procedure (transmission control procedure 1).
For example, it is convenient when using two or more touch panels to be connected. Moreover, since EH-SIO can be
mounted also in an expansion base, system expansion is very flexible.
* Transmission control procedures 2 is supported by the software version 2.1 or newer.
« Note »
Programming tools, such as the LADDER EDITOR, are not connectable with EH-SIO.
 Simple Data Link function
The simple data link is the function to make EH-SIO into a master and to exchange I/O information for the slave by
communication.
The models of PLC used as the slave is PLC which is supporting transmission control procedure 2 (with station No.).
Completion of initial setting of EH-SIO which becomes a master updates I/O area automatically by the system.
St.No. 01
Figure.1.3 System configuration of Hi-Protocol application
St.No. 02
RS-485
Figure.1.4 System configuration of Simple Data Link
St.No. 18
Max. 31 units
1 - 4
St.No. 31