Communication
11.2 PROFINET
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
901
The T_CONFIG instruction can change the Ethernet address, the PROFINET device name,
or the IP addresses of the NTP servers for time-of-day synchronization from within the user
program. The following features can be adjusted permanently or temporarily:
● IP address
● Subnet mask
● Router address
● Station name
● IP addresses of up to four NTP servers
Note
Located in the CPU "Properties", "Ethernet address" page, the
"IP address is set directly
(Page 908) radio button allows you to change the IP address online or by
using the "T_CONFIG" instruction after the program is downloaded.
Located in the CPU "Properties", "Ethernet address" page, the
"PROFINET device name
is set directly at the device"
(Page 910) radio button allows you to change the PROFINET
device name online or by using the "T_CONFIG" instruction after the
program is
Located in the CPU "Properties", "Time synchronization" page, the
"Enable time
synchronization via NTP server"
(Page 911) box allows you to change the IP addresses
of up to four NTP servers.
Note
You cannot execute more than one T_CONFIG instruction at a time.
Note
Changes to the IP address or name of station of the CPU can be temporary or
permanent. Changes to the NT
P server IP addresses can only be temporary:
A permanent change indicates that the change is retentive, meaning that the change
persists through a power failure.
A temporary change indicates that the change is volatile and reverts to the original
value after a power loss.
Table 11- 43 T_CONFIG instruction
Req:=_bool_in_,
Interface:=_uint_in_,
Conf_Data:=_variant_in_,
Done=>_bool_out_,
Busy=>_bool_out_,
Error=>_bool_out_,
Status=>_dword_out_,
Use the T_CONFIG instruction to change the IP
configuration parameters from your user program.
T_CONFIG works asynchronously. The execution
extends over multiple calls.
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