WAGO-I/O-SYSTEM 750
CANopen Master and Slave 247
750-8215 PFC200; G2; 4ETH CAN USB
Manual
Version 1.2.0, valid from FW Version 03.02.02(14)
In contrast, when the indices for larger data blocks are used, several bytes can
be accessed simultaneously.
For example, the described PFC output variable data can be accessed in a word-
by-word manner using the index for Integer16 (0xA0C0) or for Unsigned16
(0xA100), three bytes can be accessed using index 0xA140 for Integer24, etc.
Example:
The first three bytes of the PFC output data for the data type integer or unsigned
are accessed from the fieldbus:
Table 185: Fieldbus Access to PFC Output Data
Access
PFC Output Data
Reading with Index
(Integer / Unsigned)
Sub-
Index
By byte
(with Integer8 /
Unsigned8)
Byte 6000
(0xA000 / 0xA040)
1
Byte 6001
(0xA000 / 0xA040)
2
Byte 6002
(0xA000 / 0xA040)
3
By word
(with Integer16 /
Unsigned16)
Word 3000 (Byte 6000/6001) (0xA0C0 / 0xA100)
1
Word 3001 (Byte 6002/6003) (0xA0C0 / 0xA100)
2
3 bytes
(with Integer24 /
Unsigned24)
Bytes 6000 … 6002
(0xA140 / 0xA180)
1
The following tables give an overview of addressing data with different data
widths.
In this case, the corresponding indexing is assigned to the memory space for
fieldbus variables (byte 6000 to byte 9999) as a function of the data width.
The indexing indicated in the tables continues up to the respective maximum
index and sub-index.
Observe the direction of data flow!
The PFC output variables are defined from the perspective of the controller; from
the perspective of the CAN fieldbus these are input variables. Accordingly, the
PFC input variables for IEC 61131-3 access are output variables for the fieldbus.
Thus: IEC 61131-3 input variable = PFC output variable
PFC input variable = IEC 61131-3 input variable.
