Annex
NRP2
360User Manual 1173.9140.02 ─ 07
The IP address is specified using the familiar dot notation (e.g. 89.10.65.59).
●
Annex C of the TCP/IP Instrument Protocol Specification VXI11 contains an RPCL
description of the protocol. The program rpcgen, which is included in any ONC
RPC distribution, is used to generate stubs. Stubs can be inserted into separate C
programs, where the functions from the table below can be called like ordinary
library functions. This procedure requires RPC programming skills.
Table 1-5: VXI11 protocol functions
Function name Channel Meaning
create_link()
core Opens a link to a network instrument device. Socket connec-
tions are set up for the core and abort channels, but no interrupt
channel.
destroy_link()
core Destroys a link to a network instrument device.
device_write()
core Transmits an IEEE488.2 or SCPI command as a string to a net-
work instrument device.
device_read()
core Reads responses from the network instrument device.
device_readstb()
core Reads the status byte of the network instrument device.
device_trigger()
core Initiates triggering in a network instrument device; equivalent to
*TRG.
device_clear()
core Initiates a device clear (DCL) in network instrument device. In
the R&S NRP2, DCL and abort cause the same actions. Since
device_abort(), unlike device_clear(), runs via the abort channel,
it is not serialized together with other commands, but directly
accesses the device and is therefore preferable.
device_remote()
core Puts the network instrument device in the remote mode.
device_local()
core Puts the network instrument device in the local mode.
device_lock()
core Local lockout (LLO). The keyboard of the network instrument
device is locked.
device_unlock()
core Undoes the LLO status.
device_docmd()
core The network instrument device executes a command.
device_abort()
abort The network instrument device aborts a running command; see
device_clear().
create_intr_chan()
core An interrupt channel to the network instrument device is set up.
destroy_intr_chan()
core An existing interrupt channel to the network instrument device is
destroyed.
device_enable_srq()
core Activates/deactivates the transmission of service requests from
the network instrument device to the network instrument control-
ler.
device_intr_srq()
interrupt This is the only function the network instrument device calls
from the network instrument device. This function signals a ser-
vice request (SRQ).
Remote control interfaces
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