Unit_AnalogInput_FP0R_AD4

Function block to read from an FP0R-AD4 unit.

This function block reads converted digital values from the analog input channels of the analog unit. The converted digital values are stored per channel in the output variables iInChannel0 to iInChannel3.

The analog input ranges are also set with this function block.

The number of channels must be set with the DIP switches.

Parameters

Input

iIOWordOffset (INT)

Set the offset of the first WX/WY address of the analog unit according to its installation position.

For analog expansion units connected directly to the CPU (without adapter): Use ExpansionUnitToIOWordOffset_FP0 or make the following settings: 2 (WX2/WY2) for unit number 1, 4 (WX4/WY4) for unit number 2, 6 (WX6/WY6) for unit number 3

For analog expansion units connected to the CPU via an adapter: Use ExpansionUnitToIOWordOffset_FPX_FP0 or select the offset from the table.

Unit position relative to the adapter	Adapter position relative to the CPU
Unit position relative to the adapter	1st unit	2nd unit	3rd unit	4th unit	5th unit	6th unit	7th unit	8th unit
1st unit	30	40	50	60	70	80	90	100
2nd unit	32	42	52	62	72	82	92	102
3rd unit	34	44	54	64	74	84	94	104

wInChannel0_Config to wInChannel3_Config (WORD)

Set the voltage or current range for the analog input channel.

Values:

0: -10 to +10V
1: -5 to +5V
2: 0 to 10V
3: 0 to 5V, 0 to 20mA (depending on wiring method)

Output

iChannel0 to iChannel3 (INT)

Returns the converted digital data from the analog unit by channel.

Values:

For -10 to +10V, -5 to +5V: -8000 to +8000
For 0 to 10V, 0 to 5 V, 0 to 20mA: 0 to 16000

DIP switch settings

DIP switches 1 and 2 must be ON to use 14-bit mode. DIP switches 3 and 4 are used to set the number of channels, and DIP switch 5 is used to turn averaging on or off.

The DIP switch settings will become effective when the power is turned from OFF to ON.

Number of channels:

	2 (0 and 1)	4 (0 to 3)

Input averaging:

No averaging: Conversion data is set for the specified input contact point area for each A/D conversion, on each channel.

Averaging: On each channel, for each A/D conversion, the maximum and minimum values from the data of the last ten times are excluded, the data from the other eight times is averaged and the result is set.

	No averaging	Averaging

Input wiring

Voltage input	Current input
Connect the input instrument between the V and the COM terminal.	Connect the V and the I terminals. Connect the input instrument between the bridge the and COM terminal.

Conversion characteristics

-10V to +10V DC input		-5V to +5V DC input		0V to 5V DC input
Digital value (INT)	Analog value	Digital value (INT)	Analog value	Digital value (INT)	Analog value
-8000	-10V	-8000	-5V	0	0.0V
-4000	-5V	-4000	-2.5V	4000	1.25V
0	0V	0	0V	8000	2.5V
+4000	+5V	+4000	+2.5V	8000	3.75V
+8000	+10V	+8000	+5V	16000	5.0V

0V to 10V DC input		0mA to 20mA input
Digital value (INT)	Analog value	Digital value (INT)	Analog value
0	0.0V	0	0.0mA
4000	2.5V	3200	4.0mA
8000	5.0V	6400	8.0mA
12000	7.5V	9600	12.0mA
16000	10.0V	12800	16.0mA
		16000	20.0mA

Tip

This command description provides basic hardware documentation only. For detailed technical information, consult the manual:

FP0R Analog I/O Unit User's Manual

Example

POU header

All input and output variables used for programming this function have been declared in the POU header. The same POU header is used for all programming languages.

VAR
	Inst_FP0R_AD4: Unit_AnalogInput_FP0R_AD4;
	iAnalogIn0: INT:=0;
	iAnalogIn1: INT:=0;
	iAnalogIn2: INT:=0;
	iAnalogIn3: INT:=0;
END_VAR

LD body

Use ExpansionUnitNumberToIOWordOffset_FP0 or ExpansionUnitNumberToIOWordOffset_FPX_FP0 to calculate the word offset of the analog unit connected to the CPU.

BODY
    WORKSPACE
        NETWORK_LIST_TYPE := NWTYPELD ;
    END_WORKSPACE
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 8 ;
        NETWORK_BODY
B(B_COMMENT,,FP0R-AD4,2,0,17,1,);
B(B_FB,Unit_AnalogInput_FP0R_AD4!,Inst_FP0R_AD4,19,1,34,8,,?BiIOWordOffset?BwInChannel0_Config?BwInChannel1_Config?BwInChannel2_Config?BwInChannel3_Config?CiInChannel0?CiInChannel1?CiInChannel2?CiInChannel3);
B(B_VARIN,,2,17,2,19,4,);
B(B_VAROUT,,iAnalogIn0,34,2,36,4,);
B(B_VARIN,,0,17,3,19,5,);
B(B_VAROUT,,iAnalogIn1,34,3,36,5,);
B(B_VARIN,,0,17,4,19,6,);
B(B_VAROUT,,iAnalogIn2,34,4,36,6,);
B(B_VARIN,,0,17,5,19,7,);
B(B_VAROUT,,iAnalogIn3,34,5,36,7,);
B(B_VARIN,,0,17,6,19,8,);
L(1,0,1,8);
        END_NETWORK_BODY
    END_NET_WORK
END_BODY

ST body

Inst_FP0R_AD4(iIOWordOffset := 2,
	wInChannel0_Config := 0,
	wInChannel1_Config := 0,
	wInChannel2_Config := 0,
	wInChannel3_Config := 0,
	iInChannel0 => iAnalogIn0,
	iInChannel1 => iAnalogIn1,
	iInChannel2 => iAnalogIn2,
	iInChannel3 => iAnalogIn3);