765-1205/0100-0000
Functions
24
Product manual | Version: 1.0.0
8DIO FLD EC DC 24V 2.0A
5
Functions
5.1 Process Image
EtherCAT
®
uses process data objects (PDO) to transfer process data. Process data is
transferred from the EtherCAT
®
master to the EtherCAT
®
slave with objects 0x1600,
0x1601 etc.; these data objects are called receive PDOs (RxPDOs). Process data is
transferred from the EtherCAT
®
slave to the EtherCAT
®
master with objects 0x1A00,
0x1A01 etc.; these data objects are called send PDOs (TxPDOs).
Input Process Data
Objects 0x1A00 and 0x1A11 transfer input process data.
Table 20: Object 0x1A00: Assignment of the Digital Inputs
Index Subindex
Size
Name
Description
0x4000.01
2 bytes
Process Data (Pin 4) The port and pin assignment of process
data depends on the process data layout
setting: pin-based or port-based. See the
following tables.
0x1800.07
1 bit
Status bit
True: input data invalid
False: input data valid
0x1800.09
1 bit
Toggle bit
The slave toggles this bit every time the Tx-
PDO is updated.
-
6 bits
-
-
The process data of the digital inputs can be transferred on a port basis (default) or pin
basis. The following tables show the port and pin assignment.
Table 21: Process Data of the Digital Inputs (Port-Based Assignment)
Byte
Bit
Input Process Data
Byte 1
0
Port X01, pin 4: DI A or DO A
1
0
...
...
6
Port X04, pin 4: DI A or DO A
7
0
Byte 2
0
Port X05, pin 4: DI A or DO A
1
0
...
...
6
Port X08, pin 4: DI A or DO A
7
0
Table 22: Process Data of the Digital Inputs (Pin-Based Assignment)
Byte
Bit
Input Process Data
Byte 1
0
Port X01, pin 4: DI A or DO A
1
Port X02, pin 4: DI A or DO A
...
...
6
Port X07, pin 4: DI A or DO A
7
Port X08, pin 4: DI A or DO A
Byte 2
0 ... 7
0
