Toshiba V Series User Manual page 213

(5) When PC link protocol transmission fails
(a) Main station EN311
message transmission UDP
Is the error counter read out
6F8C0904
Start
Is the USEND_T or
URCV_T instruction
completed ?
Yes
A response timeout
occurred ?
Error status --- 5052
Yes
Refer to the completion status and
eliminate the cause of the error.
Is the transmission
destination IP address set
to that of the slave station
EN311 ?
Yes
Is the slave station
port correct ?
Yes
Does a response come
back if a PING is issued
to the slave station
EN311 ?
Yes
from the RAS information
constant ?
Yes RAS error counters: Alignment error
Short packet, CRC error
End
No
Confirm the status when the USEND_T
or URCV_T is not completed.
Is the station status
No
such that run +
message transmission
is enabled ?
Yes
Set the station to run + message
transmission enabled using an
operating mode control request.
No
Verify the slave station EN311
transmission destination IP address.
Verify the slave station EN311
message transmission UDP port
number.
No
Note: There are separate send and
receive ports that each have their own
message transmission UDP port
number.
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.
It is possible that there is an error on
No
the network itself. Check the network
verification items.
8.5 Troubleshooting
No
8
193