Versions Compared

Old Version 1

changes.mady.by.user Anna Malamura

Saved on

compared with

New Version 2

changes.mady.by.user Anna Malamura

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

https://help.codesys.com/api-content/2/codesys/3.5.13.0/en/_cds_f_networkvariables/

AdvantagesDisadvantages
Easy to useUses UDP protocol, UDP provides a simpler and less reliable form of data transmission
Data transmission efficiency: NVL sends data in packets

Delivery is not guaranteed

Absence of a main node: NVL does not have a binding to a main or subordinate node, making it more flexible in usage and managementOnly UDP protocol or it's limited protocol support

Optional data reading: Since data can be available to all nodes, there is no guarantee that all nodes will read or use this data


Modbus TCP

AdvantagesDisadvantages
Reliability: Modbus TCP protocol ensures reliable data transmission with acknowledgment of receiptUse of master and slave in data transmission
Wide supportLimited data transmission speed: More complex data transmission protocol.
Delivery is guaranteed


Since we are simulating the use of a bridge panel, we need to use TCP protocol for reliable data transmission.

...

PLC2 is 158.38.140.57. It will be a slave.

According to the task we need to transmit data of INT and BOOL types.










KildeSource:/Helpful links:

Configuring a Network Variable Exchange:
https://help.codesys.com/api-content/2/codesys/3.5.13.0/en/_cds_configuring_network_variables_exchange/

...