48
Connection
48
Echochange - Manual / Connection
values are selected on both sides of the connection.
The station will actively initiate the connection attempt.
The station will wait for the destination station to establish the
connection.
Protocol
The TCP and UDP protocols are available for selection. TCP is a secured protocol.
PLC Header
Enable this option for the communication with echo devices.
For details on the structure of the PLC header, refer to the PLC Header section.
Life Data Acks
If you enable this option, payload frames without content (only headers) are transmitted to keep a
connection alive that is not used cyclically (heartbeat monitoring). Both communication partners
must support this feature. For the OPCpipe communication, it is recommended to enable this option.
RFC1006
If you enable the RFC1006 option, H1 frames will be “wrapped” in a TCP/IP frame for
transport. To configure the TSAPs, click the RFC1006 TSAPs button.
Own TSAP, Dest TSAP
TSAPs (Transport Service Access Points) are addresses that are used on the transport
layer in order to address applications. TSAPs are required for RFC 1006 connections. To
connect, enter the local TSAP into the Own TSAP field and the TSAP of the
communication partner into the Dest TSAP field. In this context, please note the
following:
NOTE:
In order to be able to establish the connection, the value in the Own TSAP field of one
system must match the Dest TSAP value in the other system, i.e. they must match
crosswise.
More detailed information on TSAPs
TSAPs for S7 Connections
8.2.3.1 TCP/IP Special Settings
Use PLC Header
The PLC header can be used for communication with other Softing devices where the PLC header
can also be enabled.
See also PLC Header.
Life Data Acks
If you enable this option, payload frames without content are transmitted to keep a
connection alive that is not used cyclically (heartbeat monitoring). Both communication
partners must support this feature. For the communication with S7 PLCs, we
recommend to disable this option.
Life Acks as TCP/IP Standard
By enabling this option, you can activate connection monitoring, a function that is poorly supported in
many socket libraries. Life acks are frames that pass the connection status. It is recommended to
enable this setting (default setting). If a WAN connection is used, you might want to disable this
function for cost reasons.
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