User manual

Ethernet Communication Services
33002479 06 07/2008 87
I/O Scanner
Introduction The functionality of your Ethernet module is further enhanced by the addition of an
I/O Scanner, which you can configure with either the Schneider Electric
programming panels or on the Ethernet module’s embedded Web page.
I/O Scanner
Features
NOE version 3.5 and later include these enhancements:
Feature Availability Improvement Description
Improved Timeout and Retry
Transmission algorithm
Unity
Concept
ProWORX
Improves TCP
connection management
2004 version uses a variable timeout.
Older versions used a fixed timeout.
Difference: Faster retransmission rates
Enable/Disable I/O Scanner
entry
Unity
Concept
Reduces network traffic
volume
Use the ‘Device Control Block’
z Set = 0 Enable channel for normal
data exchange
z Set = 1 Disable channel
Note: Concept Users
Concept uses diagnostic words.
Set = FF Disable channel
Send Modbus requests
across a router
Unity
Concept
ProWORX
Allows routers to connect
remote I/O devices to a
controller
Automatic
Dynamic TCP port allocation Unity
Concept
ProWORX
Improves connection/
disconnection
performance
Reserves TCP client ports 3072 (0xC00)
through 4992 (0x1380)
Allocates ports dynamically
Repetitive rate display Unity Check status using GUI Status displays in I/O Scanning tab of
module editor