TR-HT2xx LED Controller - User Manual
Flag
value
Flag
name
Operation
when flag = 0
Operation
when flag = 1
8
E
No Ethernet message.
Send message on
Ethernet when
triggered. See Section
8.3.1, Ethernet
message flag (E)
16
F
Triggers are ignored
until output pulse is
complete.
FIFO output mode.
Multiple triggers are
queued up. See
Section 8.3.2, FIFO flag
(F)
32
R
Resync mode disabled.
Resync mode enabled.
See Section 8.3.3,
Resync flag (R).
64
P
Default to pulse in
resync mode.
Default to no pulse in
resync mode. See
Section 8.3.4, Pulse flag
(P)
8.3.1
Ethernet message flag (E)
When the TR-HT is used to trigger a camera, the image processing can
either be triggered by the acquisition of an image or by an Ethernet
message sent from the TR-HT.
When a trigger is received it is assigned a unique tag number (an
incrementing number from 0 to 255). Using the
GT
Ethernet command
and the Ethernet message flag, the TR-HT sends the tag number in a
message to the host computer to say that a trigger has occurred.
The message has the form:
Evt<channel>,<tag>
Where
<channel>
is the channel number from 1 to 4 and
<tag>
is a
number from 0 to 255. Multiple tag messages may be sent in one packet,
separated by a semi-colon (
;
).
8.3.2
FIFO flag (F)
The FIFO flag is used for systems where there can be more than one
product between the trigger point and reject gate. This is usually used with
the Resync flag, so that each product has its own pass/fail result.
If the FIFO flag is not set, then an output cannot be re-triggered until the
previous pulse has completed. Other triggers in this time are ignored.
If the FIFO flag is set, then multiple triggers are stored in the TR-HT and a
pulse is generated for each trigger at the correct time.
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