Hitachi EH-150 Series - Supported CPU Module

Chapter 1 Introduction
1 - 5
1.3 Supported CPU module
The function of EH-SIO depends on software version of CPU shown in the following table. The function of EH-SIO
and the software version of EH-CPU which can be responded are shown in the following table.
And all software version for EHV-CPU can use all functions for EH-SIO.
Table.1.3 The function of EH-SIO and correspondence CPU module
Supported CPU module *
Function of EH-SIO
Software version
EHV-CPU series
1.0
2.0
2.1
2.3
or newer
EH-CPU516 (Ver. E2.02 - E2.06)
EH-CPU516 (Ver. E2.07 or newer)
EH-CPU548 (Ver. E4.02 - E4.05)
EH-CPU548 (Ver. E4.06 or newer)
Free-Protocol






Modbus Master
(RTU )






Modbus Master
(ASCII )





Modbus Slave
(RTU )






Modbus Slave
(ASCII)





Modbus Slave
(I/O mapping)





Hi-Protocol
(procedure 1)




Hi-Protocol
(procedure 2)



Hi-Protocol
(Expansion setting)


Simple data link




Self-check


Not depend on the software version of CPU.
* HX-CPU (Software ver. 3.5.8.26 or newer) supports EH-SIO. However, how to make the program is totally different from
EH / EHV-CPU series. As to the program for EH-SIO by using HX-CPU, please refer to HX Series APPLICATION MANUAL.
« Remark »
As for the operating of combining with the EH-CPU which is not supporting the function of EH-SIO, please refer to
"Combination with EH-CPU" of "7.3 Troubleshooting".