Hitachi EH-150 - Page 123

Chapter 10 Troubleshooting
- When you use a set of PLC with EH-ETH2 and host computer.
[Test content]
The UDP message is returned between EH-ETH2 of test mode and application software which supports
communication specification.
[Communication specification]
- Communication protocol is UDP/IP.
- The application software return the massage which the EH-ETH2 of test mode sends to it.
[Test procedure]
(a) Set communication parameter according to the
Figure 10.2.
(b) Execute the application that supports the communication specifications.
(c) When you reset the EH-ETH2, the sending and receiving test will start.
Other station
- Own IP address
192.168.0.254
- EH-ETH IP address
192.168.0.1
- Send/receive test logical port number(Own station, other station)
4000
(Dec)
EH-ETH2 (test object)
(Setting except Dip switch is factory setting.)
- Dip switch setting
Bit 5, 6 ON, Others OFF
- Own IP address
192.168.0.1
- Send/receive test other station IP address
192.168.0.254
- Send/receive test logical port number(Own station, other station)
4000
(Dec)
Figure 10.2 System configuration of communication test (2)
Send / Receive test abends in case that test object EH-ETH2 does not receive the reply in 20 seconds
from one sent the test data.
Table 10.2 shows lighting pattern of EH-ETH2 LED on the test.
Table 10.2 Result of communication test
POW STS ERR result
OFF OFF On testing
ON OFF Normal end
Blinking
OFF ON Abend
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