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Configuring with STEP 7
5.4 Online functions
5.4.2
Switching operating mode
In STEP 7 "Online" > "Diagnostics" it is possible to switch between protected mode and
configuration mode in the "Functions" section. There are two buttons:
● "Configuration mode"
● "Protected mode"
It can be determined from the LEDs on the AS-i master CM 1243-2, and in STEP 7, which
mode the AS-i master is in. Further information can be found in section "LEDs of the AS-i
master CM 1243-2 (Page 18)".
The operating mode can only be switched when the S7-1200 CPU is in STOP.
Note
Online functions
The online functions can only be performed when at least the basic configuration has been
completed and the S7-1200 station has been loaded.
44
AS-i master CM 1243-2 and AS-i data decoupling unit DCM 1271 for SIMATIC S7-1200
Manual, 04/2013, A5E02655230010A/RS-AA/003
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