Access From The User Program; Process Image - Beckhoff KL3403 Series Documentation

Access from the user program

5 Access from the user program
5.1

Process image

The KL3403 is represented in the process image with a minimum of 9 bytes of input data and 9 bytes of
output data. These are organized as follows:
Byte offset (without
word alignment*)
0
1
3
4
6
7
*) Word alignment: The Bus Coupler places values on even byte addresses
No compact process image
The KL3403 cannot be operated with compact process image (without control and status bytes),
since control and status bytes are required for process data operation of the KL3403 to function cor-
rectly. Even if your Bus Coupler is set to compact process image, the KL3403 is represented with its
complete process image!
Output values
Terminal type
KL3403-0000
KL3403-0010
KL3403-0014
KL3403-0020
KL3403-0022
KL3403-0025
KL3403-0026
KL3403-0333
46
Byte offset (with word
alignment*)
0
2
4
6
8
10
Nominal value (effective)
1.0 A
5.0 A
60 mV
20 mA
20 mA
250 mA
1.0 A
333 mV
Version: 3.1.0
Format Input data
Byte
Status byte 1 (SB1
[} 48])
Word DataIN1
Byte
Status byte 2 (SB2
[} 49])
Word DataIN2
Byte
Status byte 3 (SB3
[} 49])
Word DataIN3
Output for nominal value
1000
dec
1000
dec
25000
dec
1000
dec
4000
dec
1000
dec
1000
dec
1000
dec
Output data
Control byte 1 (CB1
[} 47])
DataOUT1
Control byte 2 (CB2
[} 49])
DataOUT2
Control byte 3 (CB3
[} 49])
DataOUT3
KL3403