Omron CS1W-ETN21 - Manual (Page 207)

182
Command/Response Reference Section 7-3
Remarks
PING Command
The PING command runs the echoback test using the ICMP protocol. When
the PING command is executed, an echo request packet is sent to the remote
node ICMP. Correct communications are confirmed when the returned
response packet is received normally. The echo reply packet is automatically
returned by the remote node ICMP.
Response Codes
7-3-19 FINS/TCP CONNECTION REMOTE NODE CHANGE REQUEST
Requests a remote node change for the FINS/TCP connection.
The default destination IP address in a connection in which the Ethernet Unit
is used as a client is the destination IP address set under the FINS/TCP Tab
in the Unit Setup. By sending this command to the Ethernet Unit, the destina-
tion IP address for the specified connection can be changed to another IP
address.
Remote node changes can be made only for connection numbers specified as
FINS/TCP clients in the Unit Setup.
Command Block
Response Block
Parameters
FINS/TCP Connection No.
(Command) Specifies, in two bytes, the FINS/TCP connection number (1 to 16) for which
the change is to be made.
Remote IP Address
(Command) Specifies the remote node’s IP address (must be non-zero) in hexadecimal.
Remote Port Number
(Command) Specifies the remote TCP port number (must be non-zero) with this com-
mand.
Response code Description
0000 Normal (echo reply received from the remote node)
0205 Timeout error
1001 Command too large
1002 Command too small
1100 Zero destination address
220F PING command currently being executed
2211 High traffic at Unit; cannot execute service.
27 30
FINS/TCP
connection No. Command
code
Remote IP
address
Remote TCP
port number
27 30
Response
code
Command
code