SHENZHEN ECON TECHNOLOGY CO.,LTD User Manual For
EHS-580 EtherCAT Hybrid Servo Drive
5.4 processing data object
PDO generally used for real time data updating :it includes RXPDO and TXPDO.RXPDO is that master send the
data to slave station , and TXPDO is reversed
5.4.1 PDO mapping
The mapping objects can be real time transmission via PDO mapping.
E5-CAT supports 4groups RXPDO and 2 groups TXPDO for data transmission at the same time. Each PDO object
mapping to 8bytes object dictionary(the max length is 32bytes).
The PDO mapping format
Bit
31~16
15~8
7~1
Content
Index of mapped object
Sub-index of mapped object Bit length (hexadecimal
form)
Example
6040h
00h
10h (length:16bits)
The default PDO mapping(same as XML file)
PDO mapping
object index
PDO object
sub-index
Mapping
content
Mapping content details
Mapping content
definition
Index
Sub-index
Bit length
RXPDO1
(1600h)
01h
60400010h
6040h
00h
10h (16bits)
Control word
02h
607A0020h
607Ah
00h
20h (32bits)
Target position
03h
60B00020h
60B0h
00h
20h (32bits)
Position offset
04h
60B80010h
60B8h
00h
10h (16bits)
Probe function
RXPDO2
(1601h)
01h
60400010h
6040h
00h
10h (16bits)
Control word
02h
607A0020h
607Ah
00h
20h (32bits)
Target position
03h
60810020h
6081h
00h
20h (32bits)
Max. speed
04h
60830020h
6083h
00h
20h (32bits)
Acceleration
05h
60840020h
6084h
00h
20h (32bits)
Deceleration
06h
60600008h
6060h
00h
08h (8bits)
Operation mode
RXPDO3
(1602h)
01h
60400010h
6040h
00h
10h (16bits)
Control word
02h
60FF0020h
60FFh
00h
20h (32bits)
Target speed
03h
60830020h
6083h
00h
20h (32bits)
Acceleration
04h
60840020h
6084h
00h
20h (32bits)
Deceleration
06h
60600008h
6060h
00h
08h (8bits)
Operation mode