Hitachi EH-150 Series - Page 152

Chapter 7 System setup
7 - 8
 Check flow of Hi-Protocol mode
Task code received
Response task code
Transmitted?
Reboot the power several times.
If this does not solve, replace the module
YES
NO
Negative response?
NO
Connection of
communication
cable OK?
YES
Status of host
normal?
Error occurring to
EH-SIO?
NO
YES
Please eliminate an error factor
with reference to a return code.
YES
Please connect a
communication cable
correctly.
NO
Please change the host
to a normal state.
NO
Not-executable?
NO
YES
Please eliminate an error factor
with reference to a error code.
Please improve a request task
code.
Station No.
agreement?
YES
NO
Please improve the station No.
of a request task code.
Station No. with?
NO
YES
Abnormal task code?
NO
YES
Please improve a request task
code.
YES
A
A
B
B
B
OK
Supported CPU?
(Type, Version)
YES
NO
Replace the CPU module.
Reference :
 The cause which cannot communicate has many wiring mistakes of a communication cable. When communication
does not work, please check connection of a cable first.
 EH-SIO of software ver. 2.0 does not support transmission control procedure 2. If it’s configured as procedure 2, it
works with procedure 1. (EH-SIO of software ver. 1.0 is not supported Hi-Protocol mode.)
 Although EH-SIO can change transmission format configuration, the transmission format configuration of
Hi-Protocol is 7-bit / even parity / 1 stop. Please set the transmission configuration of EH-SIO as 7-bit / even parity
/ 1 stop.
 In the case of a task code with station No., EH-SIO does not return a negative response, even if a parity error or
framing error occurs in the request task code.