AMX NetLinx NXM Series - Manual (Page 45)

NXC-VAI4 Analog Voltage Control Card
39 NetLinx Cardframe, Control Cards, and NetModules
NXC-VAI4 Send_Commands (Cont.)
Command Description
PX
Sets the value of "I/O
MAXIMUM" which is either
the maximum output voltage
allowed for an Output, or the
maximum position voltage
expected for an Input. Voltage settings are rounded to the nearest D/A or A/D code. Voltage settings
are absolute levels and are unaffected by any scaling functions. Negative
voltages are not valid for Inputs.
Syntax:
SEND_COMMAND ,'PX'
Variables:
I/O: Any input or output ('1', '2', '3', '4', '5', '6', '7', '8')
LEVEL VALUE: 12.000V to +12.000V
Examples:
SEND_COMMAND ,'P1X5.023V'
Sets the maximum output level for Output 1 to 5.023V.
SEND_COMMAND ,'P7X5.023V'
Sets the maximum of the expected input range for Input 7 to 5.023V.
PZ
Sets one of the two "set
point" variables "I/O SET
POINT H|L" (high or low). These variables are used to calculate calibration parameters for I/O (input
or output). Receiving this command with no voltage specified returns the
specified set point to the default value.
Syntax:
SEND_COMMAND ,'PZH|L'
Variables:
I/O: Any input or output ('1', '2', '3', '4', '5', '6', '7', '8' plus '0' for EREF)
VOLTAGE: The current actual/measured voltage at the I/O.
Examples:
SEND_COMMAND ,'P1Z0.5VL'
Creates a low-end calibration point associating the current D/A code with 0.5
volts.
SEND_COMMAND ,'P1Z11.5VH'
Creates a high-end calibration point associating the current D/A code with 11.5
volts.
SEND_COMMAND ,'P0Z0.1VL'
Creates a low-end calibration point associating the current EREF A/D code
with 0.1 volts.
SEND_COMMAND ,'P1ZL'
Returns the Output 1 lower set point to its default.