![](/images/new-backgrounds/1300968/300968253x1.webp)
6 F 3 B 0 3 6 2
7.3 Remote Port Verification Request
This request verifies the existence of the specified remote port, and corresponds to the UNIX ping command. This request can be issued when the Ethernet Port operating mode is either run or standby mode. The Ethernet Port will respond to this request if its operating mode is either run or standby mode.
Remote port verification request (using the SEND instruction)
a.Function
This is a request that verifies the existence of the specified remote port.
b.Transfer parameters
A A+1 A+2 A+3
3100H
CMD = 0014H
D- IP address
Module designation
CMD number
IP address of the remote station whose existence is to be verified.
(The input format is the same as that for the parameter setup request.)
c.Status (See figure 4.3 for details on bits C, D, E and F.)
B B+1
F E D C B A 9 8 7 6 5 4 3 2 1 0
|
|
|
| 0 | 0 | 0 | 0 | TermSTS |
Detailed information (Only valid when TermSTS = 0BH.)
d.Important items
∙This request is possible in run and standby modes. (The IP address of the local port must be set up.)
∙The Ethernet Port returns a response to this request in run and standby modes. (The IP address of the local port must be set up.)
∙ If the remote port exists: | Normal return |
∙If the remote port does not exist (within 4 seconds):
Status: | Transmission error (TermSTS = 0BH) |
Detailed information: Timeout occurred (0020H)
⎯ 126 ⎯