Fieldbus Communication
•
199
EtherNet/IP (Ethernet/Industrial Protocol)
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Instance 1..255 (1. to 255. Output variable)
Attribute ID Access
Name
Data type Description
Default
value
1 Get
Fb_Out_Var
UINT
Fieldbus Output variable of
the PLC
0
This instance corresponds to the PFC’s output variables located at address
%QW1276-%QW1530 in a WAGO-I/O-PRO application.
Common Services
Service available
Service Name
Description
Service code
Class Instance
0E hex
yes
yes
Get_Attribute_Single Supplies contents of the appropriate attribute
4.3.3.2.30
Output fieldbus variable UINT Extended 1 (A9
hex
)
Same as the Output Fieldbus Variable UINT Class (A8
hex
), however this
contains only the PLC output variable 256.
This instance corresponds to the PFC’s output variable located at address
%QW1531 in a WAGO-I/O-PRO application.
Class attribute max. Instance = 1
4.3.3.2.31 Input
fieldbus variable UDINT (AA
hex
)
Class
Attribute ID Access
Name
Data type Description Default
value
1
Get
Revision
UINT
Revision of this object
1 (0x0001)
2
Get
Max Instance
UINT
Max. number of instances
128 (0x080)
Instance 1..128 (1. to 128. Input variable)
Attribute ID Access
Name
Data type Description Default
value
1 Set
Fb_In_Var
UDINT
Fieldbus Input variable of
the PLC
0
Common Services
Service available
Service code
Class Instance
Service Name
Description
0E hex
yes
yes
Get_Attribute_Single Supplies contents of the appropriate attribute
10 hex
no
yes
Set_Attribute_Single
Modifies an attribute value
4.3.3.2.32
Input fieldbus variable UDINT Offset (AB
hex
)
Same as the Input Fieldbus Variable UDINT (AA
hex
), however it has an offset
of 2 bytes.