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Command/Response Reference Section 11-3
Number of Reception
Bytes (Command, Results
Storage Area)
The maximum number of bytes of data to be received is given in the com-
mand. The number of bytes of data received will be stored in the results stor-
age area. Up to 1,984 bytes can be specified.
Timeout Value (Command) The maximum control time between receiving the receive request and storing
the result. If this set time limit is exceeded, the code for a timeout error will be
set as the results storage response code. The value is set in units of 0.1 s.
The timeout time will be unlimited if the value is set to 0.
Source IP Address
(Results Storage Area)
The IP address of the node sending data.
Source UDP Port Number
(Results Storage Area)
The port number of the node sending data.
Received Data (Results
Storage Area)
The data sent from the remote node.
Precautions
If a packet is received which contains more bytes than the number specified in
Number of reception bytes specified in the command, the specified number of
bytes will be stored and the remainder of the bytes will be discarded.
Response Codes
Results Storage Area Response Codes
11-3-11 UDP SEND REQUEST
Requests that data be received by a UDP socket.
Response code Description
0000 Normal
0105 IP address setting error
0302 CPU Unit error; execution not possible.
1001 Command too large
1002 Command too small
1100 UDP socket number or number of reception bytes 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.
220F The specified socket is currently receiving data.
2210 The specified socket is not open.
2211 High traffic at Unit; cannot execute service.
Response
code
Description
0000 Normal
003E Internal buffer cannot be reserved due to high reception load
(ENOBUFS).
0066 Internal memory cannot be allocated; cannot execute service.
0080 A receive request timeout error occurred.
0081 The specified socket was closed while receiving data.