Configuration Problem - 3onedata NP318T-8DI User Manual

10.2 Configuration Problem

1. Using TCP Socket communication mode make serial server connects to the
door access machine, found that can not communicate properly?
Fault detection:
-
-
-
Problem solving: found that the parity bit error, none parity modified to mark parity,
communication is normal.
2. Serial server can not communicate properly, found a command issued, but
through the serial server out of the data is wrong?
Fault detection:
Older version of VSP Manager's Realcom function to receive code algorithm
exception, resulting in the serial server to open the WEB function and VSP
Manager open Realcom function, the serial port to send and receive data are
wrong.
Problem Solving: After upgrading the VSP management software, the
communication is normal.
3. PC with straight-through cable directly connected to the serial server, Ping
test packet loss?
Check whether the Ethernet port of the serial server is damaged, if it has been
damaged, it will cause Ping test packet loss.
4. Serial server and computer with network cable connection, the local
connection will appear "!" Exclamation mark (that is, local connection is
limited)?
Fault detection:
-
-
Problem Solving: After a period of time to see whether the local connection "!"
Exclamation mark or the computer and serial server can be changed to the same
network segment.
5. Serial server link LED does not light?
Fault detection:
-
The IP address and port number may not be configured correctly.
The serial port parameters may not be configured correctly.
RS-485 wiring may be abnormal.
MAC address aging.
The computer and the serial server are not on the same network segment.
The serial server is not powered on.
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