Microscan N2210WZ Owner's Manual page 200

I/O Parameters
Output Mode
Sets the condition in which the discrete output is de-activated.
Pulse
This is the default mode of operation in which the programmable output is activated when
the Output On condition has been met and held active for the duration of the selected
pulse width.
Latch Mode 1 (Unlatch Input # 1 Pin)
The programmable output is activated when the Output On condition has been met and
held active until the Input # 1 Pin transitions.
Note: Input 1 must be set to
If the Output Condition is set to Read Cycle Data Valid, then the read cycle will wait for
Input 1 to unlatch the output before continuing on. This is to provide system handshake
ability despite communication channel. The read cycle data must leave all channels before
Read Cycle Data Valid will output.
Latch Mode 2 (Unlatch Opposite Condition)
The programmable output is activated when the Output On condition has been met and
held active until the opposite condition selected under Output On has been met.
For example, if No Read is enabled under Output On, the programmable output will go
active on a No Read and remain active until the opposite condition, a good read, occurs.
If the Output Condition is set to Read Cycle Data Valid, then the read cycle will continue
but every new Read Cycle Data Valid event causes the output to change state to the
opposite condition. This provides a toggle event per every read cycle output. The only
known outout state will be the on a power-on or reset. After reading begins, the state
becomes undetermined. Only the state change itself has meaning—not the absolute value.
5-134
Unlatch Output for Latch Mode 1 to function.
QX-870 Industrial Raster Scanner User's Manual