Interface And Device Messages; Interface Messages - R&S AFQ100A Operating Manual

R&S AFQ100A

Interface and Device Messages

The messages transferred via the data lines of the IEC/IEEE-bus (see section
or via a TCP/IP network can be divided into two groups:
the Interface messages and
the Device messages.

Interface Messages

Interface messages are transferred on the data lines of the IEC/IEEE bus, the ATN control line being
active. They are used for communication between controller and instrument and can only be sent by a
computer which has the function of an IEC/IEEE bus controller. Interface commands can be further
subdivided into
the universal commands
the addressed commands
Universal commands act on all devices connected to the IEC/IEEE-bus without previous addressing.
Addressed commands only act on devices previously addressed as listeners. The interface messages
relevant to the instrument are listed in section
If an Ethernet connection is present, signalling via a hardware control line is not required. The
IEC/IEEE-bus interface commands are emulated (see
1401.3084.32
Interface and Device Messages
IEC/IEEE-Bus Interface
VXI-11 Interface
5.14
Bus Lines, on page 5.33)
Functions, on page 5.34.
Messages, on page 5.38).
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