9300 Servo PLC
Preface and general information
1-6
L
ServoPLC EN 2.0
1.2.5
Definition of inputs/outputs
The user program is connected with the hardware by linking system blocks with program
organisation units (POUs):
SB
SB-Output
POU-Input
POU-Output
SB-Output
SB
POU
Fig. 1-1
Principle: Link between system blocks and program organisation units (POUs)
Tip!
The input and output assignments are always made from the program viewpoint!
•
Logic SB inputs are hardware outputs of the PLC.
•
Logic SB outputs are hardware inputs of the PLC.
Example: The system block DIGITAL_IO of the 9300 Servo PLC
If you want to use the digital input 1 and ditigal output 1 of the
9300 Servo PLC
proceed as follows:
1. Link the system block
DIGITAL_IO
explicitely with the DDS control configuration.
2. Access to digital input 1:
Assign a POU input to the system variable
DIGIN_bIn1_b
.
3. Access to digital output 1:
Assign a POU output to the system variable
DIGOUT_bOut1_b
.
SB-OUT
SB-IN
POU
POU-IN
POU-OUT
C0443
X5
DIGIN
1
0
C0114/1...5
E3
28
E5
E1
E4
E2
1
DCTRL-X5/28
DIGIN_bIn1_b
DIGIN_bIn2_b
DIGIN_bIn5_b
DIGIN_bIn4_b
DIGIN_bIn3_b
DIGIN_bCInh_b
X5
DIGOUT
1
0
C0118/1...4
A3
A1
A4
A2
1
DIGOUT_bOut1_b
DIGOUT_bOut4_b
DIGOUT_bOut3_b
DIGOUT_bOut2_b
C0444/1
C0444/4
C0444/3
C0444/2
Fig. 1-2
Principle: Connection of the system block DIGITAL_IO of the 9300 Servo PLC with a POU
Tip!
According to IEC1131, only one copy of the digital input 1 and digital output 1 can be transferred.
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