User`s manual

131
Chapter 5 Remote Interface Reference
3488 Mode Commands
4
5
STEP
Opens the last channel closed and close the next channel in the Scan
List. If STEP is executed and no Scan List exists, the 3499A/B/C will
generate an execution error.
The 3499A/B/C uses a pointer to keep track of which channel in the Scan
List is currently closed. When STEP is executed, that channel is opened
and the next item in the list is checked. If the next item in the list is a
relay or a digital I/O line, that channel/bit is closed. If the next item in
the list is a stored channel setup, that channel setup is recalled. If the
next item in the list is a stop channel 0, the last channel/bit closed will be
open without closing any channel/bit.
Channels that are closed by a channel setup will remain closed; they are
not opened by the next execution of the STEP command.
10 OUTPUT 709; “SLIST 100-119; CMON 1”
20 FOR I= 1 TO 20
30 OUTPUT 709; “STEP”
40 NEXT I
STORE <1-40>
Records the current state of the 3499A/B/C (including the channel states,
the static digital output states, etc.) in the specified register number (1-
40).
Up to 40 channel/bit setups can be stored when operating the instrument
in 3488A mode. Use RECALL (page 125) to restore a previously stored
state.
The channel/bit setup(s) can be included in a scan list.
The states of digital I/O modules that are not using handshake modes #1
or #2 are ignored.
The channels’ state will not be changed when STORE is executed.
Resetting the 3499A/B/C does not affect the stored channel/bit setup.
OUTPUT 709; “CLOSE103,115,203,204,205,206”
OUTPUT 709; “STORE 9” ! Store the channel setup in
Register 9.
OUTPUT 709; “RECALL 9” ! Recall the channel setup 9.