REA
VERIFIER
© REA Elektronik GmbH, 64367 Mühltal, Germany --- REA MLV-2D Manual Version 3 – 21/12/2015
Page 89 of 98
14
Troubleshooting
This manual describes only the operation of the device and its configuration.
Verification results, their meaning and troubleshooting in the case of poor results are
not covered by this manual. Measurement results and their interpretation are covered
by the REA training documents.
Network errors
Before extending troubleshooting to other areas, check the cables and the network
ports on the REA device. If the locking mechanism on the plug is broken, the contact
will be poor. If the port on the device is faulty – because someone got caught in the
cable, for example – then the contact will also be poor, sporadically present or
completely absent. In such cases, appropriate repairs must be carried out or the cable
must be replaced.
Recommendation: only network hardware supporting 1 Gbit/s should be used.
Unshielded types of network cable (UTP) must not be used.
Duplicate address
The PC and the REA verifier have identical network addresses (IP addresses). They
must be different – in the same sense that a street address at one location cannot
have two houses standing on it.
Multiple network cards
If a given PC has several network cards, these must be configured so that they are
logically separate. This is done with the help of an IP mask and basic selection.
Example of an incorrect configuration:
Adapter 1
Address:
192.168.111.11
Mask:
255.255.255.0
Adapter 2
Address:
192.168.111.12
Mask:
255.255.255.0
Both network adapters (network cards, plus Wi-Fi) are working in the same network.
The REA verifier on adapter 1 sends the data to the PC and the PC can send the data
back via 1 or 2. If adapter 2 is chosen, the data no longer arrives at the REA verifier,
since it is connected to adapter 1. In this case, adapter 1 should be set to
192.168.113.11 and the REA device to 192.168.113.12 (for example). The adapter 2
setting is left unchanged. With this setting, adapters 1 and 2 are now logically
separated.
Different logical networks
If the REA verifier and the PC running TransWin32 are in logically different networks,
it will not be possible to establish a connection. The device search is successful but is
followed by an error message.