This function is used in Python Scripting.

Description

Checks if an OPC server connection is enabled or disabled.

Client Permission Restrictions

This scripting function has no Client Permission restrictions.

Syntax

system.opc.isServerEnabled(serverName)

  • Parameters

String serverName- The name of an OPC server connection.

  • Returns

Boolean - True if the connection is enabled; false if the connection is disabled

  • Scope

Gateway, Vision Client, Perspective Session

Code Examples
Code Snippet
# The following iterates through all configured OPC servers, and check if they are enabled or disabled. 
# This code interacts in the Client scope, so it should be placed on a component, such as a Button. 
 
# Retrieve a list of all servers in the Gateway.
allServers = system.opc.getServers()
 
# Initialize a message. The example will append the state of each server to this message.
# The "\n" at the end of the string adds a new line
message = "Server Status:\n"
 
# Iterate through each server.
for server in allServers:
 
	# For each server, append the server name, a colon, the state of the server, and a new line. 
	# isServerEnabled returns a boolean, but may use the string format specifier (%s)
	message += "%s : %s \n" % (server, system.opc.isServerEnabled(server))
 
# Show the state of the servers in a message box.
system.gui.messageBox(message)
Keywords

system opc isServerEnabled, opc.isServerEnabled