Contemporary Controls Metasys JC-MER-CXB, Руководство пользователя, Страница: 32 / 58

TD060100-0MA
32
Table
1 —
Common Ethernet Errors
If a defined router is offline when another router boots up, error 1
13
displays on the statistics screen. This error just means that a router
at one of the defined IP addresses did not respond as expected. The
router software flags this router as offline and will not send any
messages to it until it comes back online.
The other three Ethernet debugging tools are executed from the
bash
prompt once the router program has been stopped. After stopping
the router by hitting the “Q” on the keyboard, switch the null-
modem cable to COM
1
to exercise
Linux
control.
Note:
Once “Q” is hit, the router software stops transmitting
Metasys messages, and its subnet loses communications
with the rest of the Metasys Network. To restart the router
program f
rom the
bash
prompt, type
router
.
P ing Command
The
ping
command verifies that messages can be sent and received
over the Ethernet network by transmitting continuous
pings. The
basic c
ommand format is:
ping
xxx.xxx.xxx.xxx
Error Number Meaning
98
Address already in use
102
Network dropped connection
74
Not a data message
112
Host is down
104
Connection reset by peer
101 Ethernet Network Unreachable
(typically a customer LAN Router failure)
1 13 Host
unreachable
(a remote Metasys
Ethernet device such as a
n
NCM, OWS
or JC-MER-CXB is off-line)
1 10
Connection timed out
1 11
Connection refused
w
here “xxx.xxx.xxx.xxx” is the IP address of a
device
on the Ethernet
network. Other
JC-MER-CXB units
and TCP/IP-compatible
device
systems send back a response. The pinging
will continue until you
press Ctrl-C
.