Lenze DDS System bus CAN for PLC Manual de usuario Pagina 136

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System bus (CAN) for Lenze PLC devices
CAN−AUX system blocks
9.2 CANaux2_IO (node number: 35)
9−3
L
PLC−Systembus EN 2.0
9.2.4 Assignment of the user data to variables
Several variables of different data types are assigned to the user data to be transmitted and received.
Thus, the data in the PLC program can be optionally interpreted as:
· binary information (1 bit)
· status word/quasi−analog value (16 bit)
· angle information (32 bit)
Variables for user data to be transmitted
User data Assigned variables
Byte Bit Variable (1 bit) Variable (16 bit) Variable (32 bit)
1 0
...
7
CANaux2_bFDO0_b
...
CANaux2_bFDO7_b
CANaux2_nOutW1_a
CANaux2_dnOutD1_p
2 0
...
7
CANaux2_bFDO8_b
...
CANaux2_bFDO15_b
3 0
...
7
CANaux2_bFDO16_b
...
CANaux2_bFDO23_b
CANaux2_nOutW2_a
4 0
...
7
CANaux2_bFDO24_b
...
CANaux2_bFDO31_b
5 0...7
CANaux2_nOutW3_a
6 0...7
7 0...7
CANaux2_nOutW4_a
8 0...7
Note!
Avoid simultaneous overwriting via different variable types to ensure data consistency.
For instance, if you want to write bytes 1 and 2, only use the variable CANaux2_dnOutD1_p,
CANaux2_nOutW1_a, or only the variables CANaux2_bFDO0_b ... CANaux2_bFDO15_b for this
purpose!
Variables for received user data
User data Assigned variables
Byte Bit Variable (1 bit) Variable (16 bit) Variable (32 bit)
1 0
...
7
CANaux2_bInB0_b
...
CANaux2_bInB7_b
CANaux2_nInW1_a
CANaux2_dnInD1_p
2 0
...
7
CANaux2_bInB8_b
...
CANaux2_bInB15_b
3 0
...
7
CANaux2_bInB16_b
...
CANaux2_bInB23_b
CANaux2_nInW2_a
4 0
...
7
CANaux2_bInB24_b
...
CANaux2_bInB31_b
5 0...7
CANaux2_nInW3_a
6 0...7
7 0...7
CANaux2_nInW4_a
8 0...7
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