6 F 3 B 0 3 6 2
c.Receive request
START |
| |||
|
|
| No | |
Did the RECV instruction | ||||
complete? |
| |||
| Yes |
| ||
Did the instruction time out? | No | |||
TermSTS = 0BH | ||||
| ||||
Details = 0020H |
| |||
| Yes |
| ||
|
| ¬ |
| |
|
| |||
Was the wait time set to
unlimited? 
Yes
¬
Is the station status such that run + socket transmission is enabled?
Yes
Is the local port open?
Yes
Resolve the problem by referring to the status.
| Verify the status using the | |
No | procedure described in the item | |
3 " If a SEND or RECV | ||
| ||
| instruction fails complete" on | |
| page 148. | |
|
|
No | Set the Ethernet Port to run + |
socket transmission enabled | |
| using an operating mode control |
| request. |
|
|
|
|
No | Open UDP ports on the local |
| port. |
|
|
Is the remote port
transmitting?
Yes
Are the remote port IP address and UDP port number correct?
Yes
Does a response come back
if a ping is issued to the
remote port?
Yes
Is the error counter read out from the RAS information constant (i.e., not being incremented)?
(Use RAS information
readout to determine this.)
Yes
END
No | Transmit a message at the |
| |
| remote port. |
| |
|
|
| |
|
| ||
No | Verify the remote port IP address and UDP port | ||
| number. | ||
|
|
| |
|
|
| |
| 1. | Recheck the remote port IP address and | |
No |
| message transmission UDP port numbers. | |
| 2. | Verify that there is no router on the network. | |
| 3. | Check the network verification items. | |
|
|
|
|
No | It is possible that there is an abnormality on the | |
network itself. Check the network verification | ||
| ||
| items. | |
|
|
RAS error counters: Alignment error
Short packet
CRC error
⎯ 157 ⎯
