Beckhoff KL4414, Документация

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Access from the user program
KL4414, KL4418, KL4424, KL4428 33 Version: 3.0.0
7 Access from the user program
7.1 Process image
Process image of the terminals: KL4404, KL4434, KL4414 and KL4424
KL4404, KL4434, KL4414 and KL4424 are represented in the process image with up to 12 bytes of input
data and 12 bytes of output data.
Format Input data Output data
Byte
SB1 [ } 36] CB1 [ } 36]
Word DataIN1 DataOUT1
Byte SB2 CB2
Word DataIN2 DataOUT2
Byte SB3 CB3
Word DataIN3 DataOUT3
Byte SB4 CB4
Word DataIN4 DataOUT4
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 [
}
34] page for the assignment 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 DataOUT1 to DataOUT4.
Input data words DataIN1 to DataIN4 are not used.
Process image of the terminals: KL4408, KL4438, KL4418 and KL4428
KL4408 and KL4438 as well as KL4418 and KL4428 are special cases in terms of the process image:
Essentially, two four-channel terminals are accommodated in one terminal housing, which behave like two
terminals for the K-bus.
Each of these eight channel analog terminals has the same process image like two four channel terminals of
same signal type, plugged next to each other. The KS2000 configuration software and the TwinCAT System
Manager display them like two separate four channel analog terminals.
Note
Note regarding K-bus diagnosis for KL4408, KL4438, KL4418, KL4428
Regarding K-bus diagnosis for your Bus Coupler (e.g. for flashing codes, error code and er-
ror argument), note that these eight channel analog terminals are represented as two four
channel terminals from a Bus Coupler perspective. If the Bus Coupler is the fault location in
the event of an error, you must count each eight channel analog terminal as two terminals!