Datum bc632D, User Manual

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APPENDIX B
B-12 bc632D Wall Mount LED Display (Rev A) Datum Inc
DURATION 1 000.
LINK 1 0.
SOURCE 2 1.
LABEL 2 Labeltext2.
... (continued for steps 2-8).
LINK 8 0.
END.
The display waits for three milliseconds after the time the Echo command is sent before beginning its
transmission. This is to give the computer time to disable its RS-485 driver to release the line.
If the computer is connected using the RS-232 interface, the display handles enabling and disabling the
drivers automatically.
Using the Echo command will cause disruptions in timecode decoding, since the display must devote
CPU time to sending the long response message.
A final note about the Echo command: Do not use the Echo command with address 000 if more than
one display is on the network. Doing so will cause all displays to respond at once, resulting in garbled
data.
B.5.2.17 END
The End command is used to terminate a group of commands begun with the Address command. After
the End command is received, all displays are in a state in which they will not respond to any commands
until another valid Address command is received. The End command is:
END
B.6 EXAMPLES
Following are some examples of the commands in use:
Single Step, Internal Clock
This command sequence sets up step 1 to display contents of internal clock.
ADDR 000 Talk to display.
SOURCE 1 9 Set source to internal clock.
FORMAT 1 1 Display C DDD HH:MM:SS format.
COLOR 1 2 Display in green.
LINK 1 0 Do not link to next step.
STEP 1 Start at this step.
END End of programming.