P1AM

P1-4ADL2DAL-1

Current Input

Input Functions

This module can read the current of four different input signals.

int inputCounts = P1.readAnalog(1, 2); //set the value of slot 1 channel 2 returned by the readAnalog function to the variable inputCounts
				float inputAmps = 20 * ((float)inputCounts / 8191); //converts the value of inputCounts to float with the units mA
digitalReading = base[1].inputs[2].value   #store the digital value of slot 1 input channel 2
                    analogReading = base[1].inputs[2].real  #store the analog value of slot 1 input channel 2 with the units mA

Output Functions

This module can output two different signals with variable current.

This example sends the current to be output by the channel as an integer value in counts.

This example sends the current to be output by the channel 1 as an integer value in counts and channel 2 in mA using reals.

int outputCounts = 0;    //variable outputCounts is the output value
				P1.writeAnalog(outputCounts, 1, 2); // Writes to slot 1 channel 2 of the P1-04DAL-1 
base[1].outputs[1].value = 1536   #set slot 1 output channel 1 to output ~10mA using counts
                    base[1].outputs[2].real = 15.0   #set slot 1 output channel 2 to output ~15.0mA using reals

Compatible Functions

Properties and Methods


import P1AM
                                                            base = P1AM.Base()
                                                            module = base[1] # Slot 1
                                                            ch_in = module.inputs[2] # Input Channel 2
                                                            ch_out = module.outputs[3] # Output Channel 3

Module Configuration and Status Tables

We recommend using the status functions. This table is provided as additional reference.

Module Status Data

Bytes (MSB) 7 6 5 4 3 2 1 0 (LSB) Description
Byte 0 x x x x x x x x bits 0-7 are undefined
Byte 1 x x x x x x x x bits 0-7 are undefined
Byte 2 x x x x x x x x bits 0-7 are undefined
Byte 3 x x x x x x 1 0 bit 1 - Lost 24V error
bit 0 - Module diagnostics failure
Byte 4 x x x x x x x x bits 0-7 are undefined
Byte 5 x x x x x x x x bits 0-7 are undefined
Byte 6 x x x x x x x x bits 0-7 are undefined
Byte 7 x x x x 3 2 1 0 bit 3 - Under range error on channel 4
bit 2 - Under range error on channel 3
bit 1 - Under range error on channel 2
bit 0 - Under range error on channel 1
Byte 8 x x x x x x x x bits 0-7 are undefined
Byte 9 x x x x x x x x bits 0-7 are undefined
Byte 10 x x x x x x x x bits 0-7 are undefined
Byte 11 x x x x 3 2 1 0 bit 3 - Over range error on channel 4
bit 2 - Over range error on channel 3
bit 1 - Over range error on channel 2
bit 0 - Over range error on channel 1

Channels: 4
Input Range: 0-20mA
Resolution: 13 bit (0-8191)
Examples:
Arduino
CircuitPython

Channels: 2
Output Range: 4-20mA
Resolution: 12 bit (0-4095)
Examples:
Arduino
CircuitPython

Additional Resources:
Data Sheet
 P1-4ADL2DAL-1 on AutomationDirect.com