NDC BETA LaserMike LaserSpeed Pro 8500-4, Instruction Handbook Manual

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LaserSpeed Pro 8500-4 Instruction Handbook: RS-232/RS-422 Communication 6-9
A
Direction Inversion Switch
A<CR>
Read
Response Format:
<N>
A<N><CR>
Set
<N>
is an integer, either 0 or 1. Changes the function of the Direction Digital input. Changing the direction
will also change the phase of the pulse outputs, causing a connected quadrature counter to count in the op-
posite direction.
Value Line Direction
0
Normal – A low voltage on the Direction Input (or leaving it dis-
connected) will cause the gauge to measure a positive velocity and
the length to count up, and a high (5-24V) voltage on the Direc-
tion Input will cause the gauge to measure a negative velocity and
the length to count down.
1
Reversed – The polarity of the digital input is reversed, so a low
will cause the gauge to measure a negative velocity, and a high
(5-24V) will cause the gauge to measure a positive velocity.
B
Hold Velocity If Above
B<CR>
Read
Response Format:
<N>
B<N><CR>
Set
Factory Default: 50000000 Minimum: 0 Maximum: 999999999
<N>
is the velocity value * 1000 with the units being the same as the units set with the U
command.
Sets the velocity value above which, the last valid reading is held when no measurements
are made, and below which the gauge outputs a zero for the velocity and stops counting
length when no valid measurements are made.
When holding the last speed, length will continue to count, and the pulse output will hold
at a constant frequency.