Microscan MINI Hawk Xi Manual de usuario descargar pdf (Pagina 367)

MINI Hawk Xi High Performance Imager User Manual A-43

Appendices

The PLC programmer should verify that a Command has been received by MINI Hawk Xi

by observing the equivalent “echo” field in the IN assemblies.

Trigger (0)

Edge event-driven. Takes effect when read mode is Serial, Edge, or Level. A transition

from 0 to 1 is a rising edge trigger event. A transition from 1 to 0 is a falling edge trigger

event. The following sources all induce trigger events in the reader, including:

• A serial command from a serial com port

•EZ button

• External Trigger input signal on connector A

• Command:Trigger bit in the OUT assembly

If the reader is to be exclusively triggered by the PLC, then all other trigger sources must

be kept idle.

New Master (1)

Edge-event driven. A transition from 0 to 1 is a command to the unit similar to sending the

<G>

serial command, or activating the New Master input on connector A. When activated, the New

Master function instructs the reader to store the next decode in the master symbol database.

Disable Scanning (8)

Operates the same as the <H> and <I> commands. A transition from 0 to 1 is the same as

sending an <I> command, which issues a “disable” event. A transition from 1 to 0 is the

same thing as sending an <H> command, which issues an “enable” event. Note that the

most recent command, either <H> or <I> serial commands or the Camera Action:Disabl-

eScanning command will always override the previous “scanning disable” state. To verify

scanning status, observe the DeviceStatus field in asm 0x65.

Clear Read Cycle Report and Counters (16)

Trigger, Decode/Match, Mismatch, Noread, Decoded Data string, and Sequence. A transition

from 0 to 1 is similar to sending the commands <U><W><Y><O>, which clear the historical

read cycle counters. Also, the Sequence counter and Decoded Data string will go to 0.

Note that if this command is received while a read cycle is active, execution of the command

will be delayed until the read cycle has ended, and the read cycle’s information will probably

be lost.

Unlatch Outputs (17)

If any outputs are configured for Unlatch on Input1, a transition from 0 to 1 will unlatch

the output. See configuration commands K810-812. It is not necessary for Input 1 to be

enabled.

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Microscan MINI Hawk Xi Manual de usuario Pagina 367