Rockwell Automation 1771-QB Linear Pos. - Manual (Page 136)

Advanced Features
Chapter 9
9-5
You can configure the general purpose inputs, INPUT 1 and/or INPUT 2 so
that, given their state and the trigger conditions in the current segment,
another motion segment may be triggered. Also, any motion segment may
optionally pulse or latch the programmable outputs, OUTPUT 1 and
OUTPUT 2, when the trigger conditions are satisfied.
Programmable I/O Control Word
With the programmable I/O word you can specify the level/edge sensitivity
triggers for INPUT 1 and INPUT 2 and specify programmable output
parameters for OUTPUT 1 and OUTPUT 2. (See Figure 9.4.) At any given
time, only one programmable I/O configuration per axis is valid. As soon
as a programmable I/O control word is received by the module, it
overwrites the previous I/O configuration.
Bits 0 through 10, except for bits 2 and 6, define the configuration of
OUTPUT 1 and OUTPUT 2. Bits 2, 6 and 11 are reserved, while bits 12
through 15 define the trigger configuration for INPUT 1 and INPUT 2. If
OUTPUT 1 and OUTPUT 2 are defined as in-position and loop fault
outputs, any relevant configuration specified by bits 0 through 8 are
ignored by the module.
Bits 0 and 1 - OUTPUT 1 Pulse Duration
If OUTPUT 1 is configured to be programmable and motion segment
control word 2 specifies that OUTPUT 1 is pulsed when trigger conditions
are satisfied, these bits define the duration of the pulse to be 20, 50, 100 or
200 milliseconds.
Bit 3 - Normal/Complement OUTPUT 1
If OUTPUT 1 is configured to be programmable, this bit defines whether
OUTPUT 1 is normal (active high) or complement (active low).
Normal programmable outputs go or stay:
high when triggered to latch on
low when triggered to latch off
high for the specified duration when triggered to pulse
Complement programmable outputs go or stay:
low when triggered to latch on
high when triggered to latch off
Programmable Input and
Output