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750-841, CodeSys Network Variables
Multiple controllers sharing the
same data pool on the network
© WAGO Kontakttechnik GmbH
1
750-841, CodeSys Network Variables
Boadcast Architecture
UDP Broadcast communication, cyclic, or event triggered
switch
COB ID 4711
COB ID
4711
© WAGO Kontakttechnik GmbH
COB ID
4711
COB ID
4711
COB
ID
4711
COB ID
4711
COB ID
4711
COB ID
4711
COB ID
4711
2
750-841, CodeSys Network Variables
Communication
UDP Broadcast communication, default port 1202 (changeable)
Screenshot with two handshaking 750-841’s , PLC cycl time 1-3ms, handshake cycletime app. 6 m
© WAGO Kontakttechnik GmbH
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750-841, CodeSys Network Variables
Multicast Communication
TCP/IP defines the range from 224.0.0.0 through 239.255.255.255 as multicast addresses.
The addresses in the range 224.0.0.x and 224.0.1.x are partly used for special purposes
and should be avoided.
For communication there are following options:
© WAGO Kontakttechnik GmbH
192.168. 0. 45
255.255.255. 0
Example Controller:
IP:
SM:
1. Broadcast
255.255.255.255
2. Broadcast
192.168.0.255
3. Multicast
225.10.10.10
(for example, possible
IP see above)
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750-841, CodeSys Network Variables
Multiple controllers sharing
the same data pool on the network
Variable1:BOOL;
Variabe2:INT;
Variable3:ARRAY[1..10] OF REAL;
Prerequisits:
750-841
Firmware > 01.02.11(00)
CodeSys
Target > 21.06.2004
Library NetVarUdp_LIB_V23.lib
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750-841, CodeSys Network Variables
Write file
on compile
Netvar001.exp saved on Hard Disk
Variable1:BOOL;
Variabe2:INT;
Variable3:ARRAY[1..10] OF REAL;
Read file
on compile
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750-841, CodeSys Network Variables
Enable
Network variable support
in the target settings
Producer
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750-841, CodeSys Network Variables
Add a new global variable list
Name and path of the network variable file
Node #1 producer with export,
All other nodes consumer with import function
COB-ID must match (similar to CANopen)
Configure the transmission type
Producer
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750-841, CodeSys Network Variables
Define in it the network variables in the created variable list
Producer
© WAGO Kontakttechnik GmbH
9
750-841, CodeSys Network Variables
Enable
Network variable support
in the target settings
Consumer
© WAGO Kontakttechnik GmbH
10
750-841, CodeSys Network Variables
Name and path of the network variable file
Node #1 producer with export,
All other nodes consumer with import function
The network variables popping up us
Global variable and can be used in the program
COB-ID must match (similar to CANopen)
Consumer
© WAGO Kontakttechnik GmbH
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