---
title: "system.opc.isServerEnabled"
description: "Checks if an OPC server connection is enabled or disabled."
---

# system.opc.isServerEnabled

> Checks if an OPC server connection is enabled or disabled.

This function is used in **Python Scripting**.

## Description
## Client Permission Restrictions
This scripting function has no [Client Permission](../../../ignition-modules/vision/vision-project-properties/vision-project-properties.md#vision-permissions-properties) restrictions.

## Syntax
`system.opc.isServerEnabled(serverName)`

### Parameters
Type | Parameter | Description 
------- | ------- | ------
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
```python title="Code Snippet"
# The following will iterate 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.vision.showMessage(message)
```