Automatic control function programming manual ladder language

15.5 Exchanges With a Remote Station
15.5.1 Send a Request neto
Syntax
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neto (source_port, &datagram)
source_port: Number of the source port.
&datagram: Address of the buffer to be sent.
Description
Sends a request to a remote station. The request is sent on one of the 16 source ports with addresses 0x50 to 0x5F.
Operation
If the source port number is valid (between 128 and 143) when the neto(..) function is called and if series 7 addressing
(network, station, port, module, channel) is valid, the monitor:
- sends the request to the destination server and returns to the caller with an OK return code if the transmit channel
is free,
- returns to the caller with the SATURATION return code if the transmit channel is saturated.
If a programming error is detected, a return is made to the caller with the return code indicating the error detected.
As many requests can be exchanged simultaneously as there are source ports available.
Return Code
If OK
Code Report message
0x00 Transmission correct
Error
Code Report message
0x01 Buffer too long
0x02 Zero buffer length
0x03 Queue saturated - The 16 buffers are full
0x04 Incorrect port number
0x05 Option not valid for this request
0x08 Line number invalid
0xFF Not in a background task
REMARK The Network, Station, Port, Module and Channel fields correspond to the
Telemecanique Series 7 addressing identifying the request recipient. Refer to the
manual on the corresponding network.