11-3
Section
Command/Response Reference
211
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
11-3-18
PING
Equivalent processing to the UNIX computer
ping
command (see below).
Command Block
20
27
Command
code
Timeout
value
Destination IP address
Response Block
20
27
Command
code
Response
code
Parameters
The IP address of the destination node for the PING command echo request
packet.
Timeout Value (Command)
The wait time for the echo reply packet. The value is set in seconds. The timeout
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.
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. Refer to 9-2 PING Command.
Response Codes
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.
Destination IP Address
(Command)