Toshiba V Series User Manual page 211

(4) When computer link protocol transmission fails
(a) Host computer side (main station)
transmission UDP port number
Check the network verification items
(except the items related to the
6F8C0904
Start
Is the transmission
destination IP address set
to that of the slave station
EN311 ?
Yes
Is the slave station message
correct ?
Yes
Is there any error on the
computer link protocol ?
Yes
Does a response come
back if a PING is issued
to the slave station
EN311 ?
Yes
EN311).
End
Check the slave station EN311 IP
No
address.
Check the slave station message
transmission UDP port number.
No
Note: There are separate send and
receive ports that each have
their own message transmission
UDP port number.
Check the computer link protocol
No
format.
1) Check the slave station IP address
and message transmission UDP
port number again.
No
2) Configure the router if there is a
router on the transmission line.
3) Check the network verification
items.
8.5 Troubleshooting
8
191