Microscan QX Hawk Bedienungsanleitung Seite 419

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QX Hawk Industrial Imager User Manual A-103
Appendices
Command
The PLC programmer should verify that a Command has been received by QX Hawk 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 imager, 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 imager 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 imager 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:DisableScanning
command will always override the previous “scanning disable” state. To verify scanning status,
observe the DeviceStatus field in asm 0x65.
Bit # Action
0 Trigger
1 New Master
2-7 Reserved
8 Disable Scanning
9-15 Reserved
16 Clear Read Cycle Report and Counters
17 Unlatch Outputs
18-31 Reserved
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