Combining The Flag Lines - Keysight VXI Bus 75000 C Series User And Programming Manual

Configuring the Keysight E1458A Digital I/O Module

Combining the Flag Lines

Each port contains a Flag Line, labeled FLG, that can be used to implement a
handshake scheme with a peripheral. For single-port operations, the FLG lines
can be used in the factory default setting (no flag lines combined) to handshake
with a peripheral. For multi-port operations with a single handshake line, you
can combine the flag line from multiple ports. The combined flag lines are
physically tied together. An action on any of the combined flag lines performs
that action for all combined flag lines.
Figure 2-4 shows the locations of the flag combining switches and how to set
them. Before setting any flag combine switches, you may wish to read the
discussion regarding allowable port combinations and handshaking in Chapter 3
of this manual.
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When using the FLG and CTL for handshaking on multiple-port
operations, the CTL line is set for each port sequentially beginning
at the lowest- numbered port.
Keysight E1458A 96-Channel Digital I/O Module User Guide
Combining the Flag Lines