PP8xx LED Controller - User Manual
or microseconds. For currents, 'a' or 'ma' can be added to indicate amps
or milliamps. The default is amps. For example:
Parameter
Meaning
0.1ms
0.1milliseconds
200
200 microseconds
0.1s
0.1 seconds
100ma
100 milliamps
2.45A
2.45 amps
2.3
2300 milliamps or 2.3 amps
Note:
The parameters used are in 'USA/UK' format so that a half is written
'0.5' and not '0,5'.
10.3 General commands
The general command codes and their meaning are described below. The
upper case commands are shown, followed by lower case letters denoting
the numeric argument.
Note:
Any changes made using these commands are not saved
permanently until the
AW
command has been issued as follows:
Save the settings to memory
AW
Once the settings are saved to memory they are then retained when
the unit is switched off. If this is not done, changes to the settings are
volatile, and if the unit is switched off they revert to those in force
when the last
AW
command was issued.
Report the firmware version
VR
This command returns the firmware version. For example:
PP820 (HW0005) V059
Set trigger mode
FP0
All channels triggered individually
FP1
All channels triggered by input 0*
FP2
Channels 0 to 3 triggered from input 0, channels 4 to
7 triggered from input 4.
*Note 1:
When all channels are being triggered from input 0, the
other triggers should not be pulsed.
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PP8xx LED Controller - User Manual
Note 2:
Delays are from 4μs to 10μs longer in FP1 and FP2 modes.
This setting can be saved to non-volatile memory using the
AW
command.
Internal trigger mode
This command enables or disables the internal trigger. When
enabled, all outputs are triggered simultaneously using an internal
trigger signal. This setting can be saved to non-volatile memory
using the
AW
command.
TT0
Use external triggers
TT1
Use internal trigger (defaults to 25Hz)
TT1,p
Use internal trigger and set the period.
Where
p
is the period of the triggers in microseconds. For example:
TT1,200MS
Set the internal trigger to 200ms (5kHz)
TT1,100
Set the internal trigger to 100μs (10kHz).
Clear settings
Clear all output channel settings: All output channel and timer
settings are cleared to a default value 0.0A continuous. This does not
clear any Ethernet settings.
CL
Simulate an input trigger
This command sends a trigger pulse to the specified input channel.
TRc
Where
c
is the input channel (0 to 7)
Enable Ethernet messsages
GTm
Where:
m
= 0 to disable Ethernet messages
= 1 to enable Ethernet messages.
When Ethernet messages are enabled, any error reports are sent to
the most recent UDP or TCP address from which a command has
been received.
Read any error messages
GR
If Ethernet messages are disabled, the last error number can be
read by this command.
The reply is of the form
ErrN
where
N
is the error code, for example:
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