BENTLY 3500/27 Temperature Monitor Module

The above example illustrates the reception of data (type 3). The driver does not block (waits for incoming data). The control/status word field signifies whether or not data has been received. Currently only one status bit is specified, bit 16, the receipt of data. This bit is cleared if no data is present. It is set if receive data is present. The transfer byte count is also set to the number of bytes associated with this receive data packet. This field is only valid when bit 16 is set.This entry point is useful when the interface has not been accessed for some time and you do not want receive data. The Network I/O commands (i.e., NAB, NBH, NBO, NIOP, and NPING) use this feature prior to any Network I/O transactions.

Network I/O Physical

The NIOP command allows you to get/put files from/to the supported network (initially only Ethernet) interfaces. When invoked, this command goes into an interactive mode, prompting you for all parameters necessary to carry out the command. This command basically uses the TFTP protocol to perform the file transfer. The IP addresses for the TFTP session are obtained from the configuration parameters. The IP addresses are checked to see if the server and the client are resident on the same network. If they are not, the gateway IP address is used as the intermediate server to perform the TFTP session with. The filename character string has a maximum length of 64 bytes. Whenever an error occurs, the TFTP session is terminated and the error code is displayed. The error codes are listed in Appendix H.

The above example illustrates 

the reading (or getting) of the file /riscy/fwdb/NETLOADER/nbldexp/M68K/nbld.out from the specified server (see the NIOT command) into memory at address 00010000. The length field of 0 signifies to load the entire file. The load (get) of a file can be truncated to a desired length by specifying the desired length (non-zero). The byte offset field can be used to wind (index) into a file (only used on file reads, gets). Upon successful transfer of the specified file, the command displays the TFTP session statistics. The NIOP command utilizes the necessary configuration parameters (see the NIOT command) to perform the TFTP file transfer.

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