T_Config - Siemens S7-1200 System Manual
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Also See for S7-1200:
- Operating instructions manual (132 pages) ,
- Programming manualline (74 pages) ,
- Manual (46 pages)
Table of Contents
10.2.2.9
T_CONFIG
The T_CONFIG instruction changes the IP configuration parameters of the PROFINET port
from the user program, allowing the permanent change or setting of the following features:
● Station name
● IP address
● Subnet mask
● Router address
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
Note
Located in the CPU "Properties", "Ethernet address" page, the "Set IP address using a
different method" (Page 546) radio button allows you to change the IP address online or
by using the "T_CONFIG" instruction after the program is downloaded. This IP address
assignment method is for the CPU only.
Located in the CPU "Properties", "Ethernet address" page, the "Set PROFINET device
name using a different method" (Page 547) radio button allows you to change the
PROFINET device name online or by using the "T_CONFIG" instruction after the program
is downloaded. This PROFINET device name assignment method is for the CPU only.
WARNING
Changing IP configuration parameter with T_CONFIG causes a CPU restart.
After you use the T_CONFIG to change an IP configuration parameter, the CPU
restarts. The CPU goes to STOP mode, performs a warm restart, and returns to RUN
mode.
Do not use the T_CONFIG instruction in a production environment. Control devices can
fail in an unsafe condition, resulting in unexpected operation of controlled equipment.
Such unexpected operations could result in death or serious injury to personnel, and/or
damage to equipment.
Ensure that your process will go to a safe state when the CPU performs a warm restart
as a result of T_CONFIG instruction execution. A warm restart does not reset memory.
A warm restart does initialize all non-retentive system and user data and retains the
values of all retentive user data.
Note
You should not attempt to execute more than one T_CONFIG instruction at a time.
Communication
10.2 PROFINET
541
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