Enabling Ethernet Services
Original instructions
About us
Service List
Use the Services page to enable and disable Ethernet services provided by the communications module.
NOTE: After you enable any service, you can configure its settings. Control Expert applies default settings to services you enable but elect not to configure.
The Services page looks like this:
To display this page, select the Services node in the navigation tree located on the left side of the Device Editor.
After you Enable a service in this page, the next step is to configure that service. Depending upon the specific service, it can be configured in either the Control Expert Device Editor (by selecting a node beneath the Services parent node) or in the module’s web pages.
NOTE: Refer to the topic Configuring Properties in the Device Editor for instructions on how to edit properties in Control Expert.
Service Descriptions
The Ethernet communication module can be configured to provide the following services:
This service...
Enables the module to...
Configurable in...
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 by default and cannot be disabled.
(not editable)
Access Control
deny access to the Ethernet communication module from unauthorized devices.
Device Editor
Address Server
provide both IP addressing parameters and operating parameters to other Ethernet devices.
Device Editor
QoS Tagging
add Differentiated Services Code Point (DSCP) tags to Ethernet packets so that network switches can prioritize the transmission and forwarding of Ethernet packets.
NOTE: Before enabling QoS tagging, confirm that devices connected to the Ethernet communication module support QoS tagging.
Device Editor
I/O Communication Control
allow the Control Expert application to control the enabling and disabling of individual connections between the communication 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
Device Editor
RSTP
employ the rapid spanning tree protocol (RSTP)—in combination with other similarly-configured network devices—to manage redundant physical connections and create a loop-free logical path connecting the network devices.
Device Editor
Port Mirroring
duplicate the traffic entering and exiting any one of the four Ethernet ports onto another non-RSTP destination port, for the purpose of diagnosing the source port.
Web pages
IGMP Snooping
restrict outbound multicast transmissions to only those ports with downstream consumers.
<no configuration required>
Network Time Service
provide the source time synchronization signal for the PLC controller, which manages an internal clock to maintain this time.
Device Editor
Email
enable the sending—but not receiving—of email messages from the PLC application to a standard SMTP server.
Device Editor