Omron CS1W-ETN21 operation manual Ping, Response Block Parameters

Command/Response Reference Section 7-3

Results Storage Area (Command)

Precautions

The area in which the results of the command execution are stored. The first byte specifies the memory area and data type (variable type). The 2nd to 4th bytes specify the beginning address of the results storage area. Refer to page 158 for details about the variable types and addresses that can be spec- ified.

Any other processing, such as sending or receiving data, being carried out when this close command is executed will be forcibly ended and a code will be stored in the results storage area to indicate that this processing was forcibly ended.

Response Codes

Response code	Description
0000	Normal
0105	Local IP address setting error
0302	CPU Unit error; execution not possible.
1001	Command too large
1002	Command too small
1100	The TCP socket number is out of range.
1101	The variable type for the results storage area is out of range.
1103	Non-zero bit address specified for the results storage area.
2210	No connection could be established to the specified socket.
2211	High traffic at Unit; cannot execute service.

Results Storage Area Response Codes

Response code	Description
0000	Normal

7-3-18 PING

Equivalent processing to the UNIX computer PING command (see below).

Command Block

27	20
Command Destination IP address		Timeout
code		value

Response Block

27 20

Parameters

Destination IP Address (Command)

Timeout Value (Command)

Command Response

code code

The IP address (in hexadecimal) of the destination node for the PING com- mand echo request packet.

The wait time for the echo reply packet. The value is set in seconds. The time- out time is set at 20 seconds if the value is specified as 0. If the echo reply packet is not received within the set time limit, the code for a timeout error will be set as the results storage response code.

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