BECKHOFF KL3132, KL3142, KL3152, KL3162, KL3172, KL3182: Access from the user program

Process Image

The terminals KL3132, KL3162, KL3142, KL3152 KL3172 und KL3148 are represented in the process image with up to 6 bytes of input data and 6 bytes of output data. These are organized as follows:

Format	Input data	Output data
Byte	SB1	CB1
Word	DataIN1	DataOUT1
Byte	SB2	CB2
Word	DataIN2	DataOUT2

Key

SB n: Status byte for channel n
CB n: Control byte for channel n

DataIN n: input data word of channel n
DataOUT n: output data word of channel n

• The mapping of the bytes and words to the addresses of the controlling system can be found on the mapping page.
• The meaning of control und status bytes can be found on the page control  and status bytes.
• In process data mode the analog values are transmitted within the input data words DataIN1 and DataIN2 and the output data words DataOUT1 and DataOUT2 are not used.

Representation of the analog values

Analog voltages are represented by the bus terminals as follows:

KL3132

Voltage	Decimal	Hexadecimal
-10 V	-32768	0x8000
+10 V	+32767	0x7FFF

KL3162

Voltage	Decimal	Hexadecimal
0 V	0	0x0000
10 V	65535	0xFFFF

KL3142

Current	Decimal	Hexadecimal
0 mA	0	0x0000
20 mA	65535	0xFFFF

KL3152

Current	Decimal	Hexadecimal
4 mA	0	0x0000
20 mA	65535	0xFFFF

KL3172

Voltage	Decimal	Hexadecimal
0 V	0	0x0000
2 V	65535	0xFFFF

KL3182

Voltage	Decimal	Hexadecimal
-2 V	-32768	0x8000
+2 V	+32767	0x7FFF