Requirements For Operation - Siemens CP 1243-8 IRC Operating Instructions Manual

Number of data points for the data point configuration
The maximum number of configurable data points is 200.
Frame memory (send buffer)
The CP has a frame memory (send buffer) for the values of data points configured as an
event.
The send buffer has a maximum size of 16000 messages. The size of the message memory
is divided equally among all configured communications partners. It can be set in STEP 7
Basic, refer to the section Parameter group "Communication with the CPU" (Page 66).
You will find details of how the send buffer works (storing and sending events) as well as the
options for transferring data in the section Process image, type of transmission, event
classes (Page 72).
Messages: SMS / E-mail
Up to 10 SMS messages and e-mails can be sent using telecontrol communication.
IPsec tunnel (VPN)
Up to 8 IPsec terminals can be established for secure communication with other security
modules.
Firewall rules
The maximum number of firewall rules in advanced firewall mode is limited to 256.
The firewall rules are divided up as follows:
● Maximum 226 rules with individual addresses
● Maximum 30 rules with address ranges or network addresses
(e.g. 140.90.120.1 - 140.90.120.20 or 140.90.120.0/16)
● Maximum 128 rules with limitation of the transmission speed ("Bandwidth limitation")
1.5

Requirements for operation

Hardware requirements
Apart from the CP, in the remote S7-1200, the following hardware is also required:
● A CPU with firmware version as of V4.1
● For communication via WAN networks (dedicated line, dial-up / GSM / wireless network):
A TS module
You will find the TS modules in the telecontrol accessories program, refer to the appendix
TS modules (Page 115).
A TS basic device (TS Adapter) is not required.
CP 1243-8 IRC
Operating Instructions, 06/2015, C79000-G8976-C385-01
Application and properties
1.5 Requirements for operation
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