Enabling Services

Description

Use the Services page to enable and disable Ethernet services provided by the 140NOC78100 head module.

NOTE: After you enable a service, you can configure its settings. If a service is not configured, Control Expert applies its default settings.

The Services page looks like this:

NOTE: By default, the Address Server, I/O Communication Control, and Service Port fields are set to Enabled. All other fields are set to Disabled.

Enabling/Disabling Ethernet Services

To enable or disable Ethernet services on the Services page:

Step	Action
1	Double-click the 140NOC78100 head module in the DTM browser or right-click the module and click Open.
2	Click Services in the navigation tree located in the left panel of the Device Editor.
3	For each feature, change the setting as desired. Address Server, I/O Communication Control, and Service Port are Enabled by default. All other features are Disabled by default.
4	Click Apply to save changes, or click OK to save changes and close the window.

When you Enable a service, Control Expert displays a node for that service in the navigation tree in the left panel of the Device Editor, beneath the Services parent node. Click a service node to access its settings.

When you Disable a service, Control Expert hides the node for that service.

NOTE: Refer to Configuring Properties in the Device Editor for instructions on how to edit properties.

Ethernet Services Descriptions

The 140NOC78100 head module can be configured to provide the following Ethernet services:

If this service is enabled...	The module can...
Access Control	Deny access to the 140NOC78100 head module by unauthorized network devices
Address Server	Provide both IP addressing parameters and operating parameters to other Ethernet devices
I/O Communication Control	Allow the Control Expert application to control the enabling and disabling of individual connections between the head module and remote I/O devices NOTE: The application can open and close individual connections using the control bits located at the beginning of the output area. If this service is disabled, the user — via the application program — cannot toggle on and off connection control bits.
Network Time Service	Synchronize computer clocks over the Internet for the purposes of event recording (sequence events), event synchronization (trigger simultaneous events), or alarm and I/O synchronization (time stamp alarms)
Service Port	Supports 3 functions: Port Mirroring: You can connect to this port via a PC and sniff (using Ethereal, WireShark, etc.) the traffic that is travelling through the other ports including the Ethernet port — the internal port — that is connected to the CPU. Access Port: You can connect an Ethernet device (ex: an HMI or a PC with Control Expert software or a PC with ConneXium Network Manager software) to this port, and communicate with the CPU/PLC, the 140NOC78100 head module itself, or access other devices connected to the network. Extended Network: An existing distributed I/O network participates in the Ethernet remote I/O network when a 140NOC78000 distributed I/IO head module is connected to the SERVICE/EXTEND port of the 140NOC78100 control head module and also connected to the INTERLINK port of the 140CRP31200 remote I/O head module.
IP Forwarding	Exchange network transparent data between the control network, the device network, and extended distributed I/O networks, while preserving remote I/O device network determinism
Email	Send email messages that notify you of custom events during application execution. Custom email messages are delivered to a preconfigured destination on demand by your application code.
SNMP	Serve as an SNMP v1 agent Provide trap information to up to two devices configured as SNMP managers. NOTE: The SNMP service is enabled.
QoS Tagging	Network switches can prioritize the transmission and forwarding of Ethernet packets NOTE: The QoS service is enabled.
RSTP	Create a logical network path for Ethernet devices that are part of a topology that includes redundant physical paths. The RSTP-enabled module also automatically restores network communication — by activating redundant links — in the event the network experiences a loss of service. NOTE: The RSTP service is enabled.