Beckhoff KL31 2 Series, Documentation

Page: 39 / 56

Access from the user program
KL31x2 39 Version: 2.4.0
5 Access from the user program
5.1 Process image
The terminals KL3132, KL3162, KL3142, KL3152 KL3172 and KL3148 are represented in the process image
with a maximum of 6 bytes of input data and 6 bytes of output data. These are organized as follows:
Format Input data Output data
Byte
SB1 [
}
42] CB1 [
}
42]
Word DataIN1 DataOUT1
Byte
SB2 [
}
44] CB2 [
}
44]
Word DataIN2 DataOUT2
Key
SB n: Status byte for channel n
CB n: Control byte for channel n
DataIN n: Input data word channel n
DataOUT n: Output data word channel n
• Please refer to the Mapping [
}
40] page for the allocation of the bytes and words to the addresses of
the controller.
• The meaning of the control and status bytes is explained in Control and status bytes .
• In process data mode the analog values are transferred in output data words DataIN1 and DataIN2.
Input data words DataOUT1 and DataOUT2 are not used.
Representation of the analog values
The analog input values are represented by the terminals as follows:
KL3132-0000
Voltage Decimal Hexadecimal
-10 V -32768 0x8000
+10 V +32767 0x7FFF
KL3142-0000
Current Decimal Hexadecimal
0 mA 0 0x0000
20 mA 65535 0xFFFF
KL3152-0000
Current Decimal Hexadecimal
4 mA 0 0x0000
20 mA 65535 0xFFFF
KL3162-0000
Voltage Decimal Hexadecimal
0 V 0 0x0000
10 V 65535 0xFFFF