System information

General Reference Guide IO Servers Configuration
RG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 114
5.9.2.1 Communication Setup
In the current implementation, the serial link configuration may be done using the DF1 IO Server configuration page or the AB LOGIX IO server
page.
The same settings apply for both IO servers (DF1 and ABLogix).
note: In the config.txt file the serial link parameters are defined in the DF1 IO server entry.
5.9.2.2 Topic configuration
Three topics can be used for the IO Server. These topics are used to give a common property, to a group of Tags, like:
• Enable/Disable
• Global Device Address
• Poll rate
5.9.2.2.1 ABLogix : DF1 serial link
The Global Device Address has the following syntax: Address
•
Address = DF1 Node ID of the device (i.e.: 5)
Figure 88: ABLogix : DF1 address example
Baud Rate Select the Baudrate from 1200 to 38400 Bauds
Parity The parity to apply: none / odd / even
Stop Bit(s) Number of stop bits
Frame Error Detection Cyclic Redundancy Check (CRC) or Block Check Character (BCC)
HW mode Full Duplex no handshaking or Half duplex
Master Response Timeout
Maximum time the eWON will wait for a valid message from the DF1 master. This value can
be critical for a correct operation, depending on the responsiveness of the master. A value of
1000 should be selected to guarantee correct operation
Rx message timeout (MSEC) Maximum time between a request is posted and the response is received
Tx message timeout (MSEC) Maximum time for a request to be sent
eWON DF1 address
Device Address of eWON on DF1 link
When the eWON acts as a DF1 slave, it will respond to 2 consecutive link addresses; doing
this improves the throughput of data across the eWON when acting as a gateway. (eWON
DF1 address and eWON DF1 address +1)
Destination DF1 address Device Address of Destination on DF1 link when EIP is used
Bridge EIP connection
When bridging is configured, EIP connections requests are forwarded to the PLC on the DF1
interface (mandatory for Logix family). This is the default configuration.
When not configured, connection requests are cancelled by the eWON (must be disabled for
SLC family).
Table 90: ABLOGIX-DF1 communication setup controls
Topic configuration item Description
Topic enabled Enables or disables the polling of all the Tags in the topic
Global Device Address
The Global Device Address is a global parameter for all the Tags of the topic. See below for
the Device Address syntax. If an address is specified here, it will replace (overload) the
address defined Tag by Tag
Poll rate
Defines the refresh rate (in mSec) of the Tag name. In a complex application, we can imagine
that some Tag name must be refreshed every second – typically for digital input - and other
every minute – typically: temperature-
Table 91: ABLOGIX topics configuration setup