Siemens SIMATIC S7-1200 CP 1243-8 IRC User Manual

Configuration
4.8 Ethernet interface
CP 1243-8 IRC
74 Operating Instructions, 02/2018, C79000-G8976-C385-03
4.8.5.2
TCP connection monitoring
TCP connection monitoring
The settings made here apply globally to all configured TCP connections of the CP.
With DNP3:
Note the option of overwriting the values configured here for individual communications
partners, refer to the section Partners (DNP3 / IEC) (Page 91).
●
TCP connection monitoring time
Function: If there is no data traffic within the TCP connection monitoring time, the CP
sends a keepalive frame to the communications partner.
Default setting: 180 s. Permitted range: 1...65535 s.
–
The parameter below the Ethernet interface
The monitoring time is configured for the Ethernet interface globally for all TCP
connections. The parameter is preset to 180 seconds as default.
–
The parameter below "Partner stations"
The parameter "TCP connection monitoring time" occurs again with the individual
partners in the parameter group "Connection to partner". This parameter applies only
to the individual partner. The value of 180 seconds preset on the Ethernet interface is
adopted for the individual partners.
If for any reason you want to change the value of the TCP connection monitoring time
for individual partners, you can adapt the value for every partner individually in
"Partner stations". If. for example, you want to check the connection at shorter
intervals, reduce the value.
●
TCP keepalive monitoring time
After sending a keepalive frame, the CP expects a reply from the communications partner
within the keepalive monitoring time. If the CP does not receive a reply within the
configured time, it terminates the connection.
Default setting: 10 s. Permitted range: 1...65535 s.
–
The parameter below the Ethernet interface
The monitoring time is configured for the Ethernet interface as a global setting for all
TCP connections.
–
The parameter below "Partner stations"
As with the TCP connection monitoring time, the value of "Partner stations" can be
adapted for each partner individually.

Siemens SIMATIC S7-1200 CP 1243-8 IRC Specifications

General

Product Type	Communication Processor
Series	SIMATIC S7-1200
Model	CP 1243-8 IRC
Data Transfer Rate	10/100 Mbps
Power Supply	24 V DC
Mounting	DIN rail
Dimensions (W x H x D)	45 mm x 100 mm x 75 mm
Digital Inputs Quantity	0
Digital Outputs Quantity	0
Supported Protocols	ISO-on-TCP
Interface	Ethernet
IP Addressing	Static, DHCP
Configuration	STEP 7 Basic/Professional
Operating Temperature	-20°C to +60°C
Weight	Approx. 200 g