Hitachi S10mini Hardware Manual page 56

Return Codes
=0: Normal termination
If there is still uncaptured data after data capturing, the response reception flag of the NET
status remains set (data received).
=1: No received data is in the receive buffer.
=/001A0000: The last data appears in the buffer when received data was being captured. This
return code is set when the number of bytes specified by parameter is greater than
or equal to the number of bytes actually received.
=/FFFFFFFF: Abnormal termination
=/80000000: Input parameter error
An input parameter error results when the mdl, sid, net, or len parameter is outside
the range or when the station number of the slave parameter table (SVPT) is not
registered.
Note
If the number of bytes specified by the parameter is greater than that of actually received bytes
in received data capturing, the value 0 is set after the received data in the receive area.
An example when 10 bytes are specified as the bytes received and 6-byte data is actually
received is given below.
Received 6-byte data
data 1
data 3
data 5
Error information is stored in the error code area of the S-table and the error flag
of the NET status.
data 2
data 4
data 6
10-byte receive area
data 1 data 2
data 3 data 4
data 5 data 6
0
0
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0
The value 0 is set.
0