Communication
11.4 AS-i
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
985
There are two AS-i operational modes:
● Protection mode:
– You cannot change AS-i slave device and CPU I/O addresses.
– The green "CM" LED is OFF.
● Configuration mode:
– You can make required changes in your AS-i slave device and CPU I/O addresses.
– The green "CM" LED is ON.
In the "Set AS-i address" field, you can change the AS-i slave address. A new slave that has
not been assigned an address always has address 0. It is detected by the master as a new
slave without an address assignment and is not included in normal communication until
assigned an address.
When the yellow "CER" LED is ON, there is an error in the AS-i slave device configuration.
Select the "ACTUAL > EXPECTED" button to overwrite the AS-i master CM1243-2 module
slave device configuration with the AS-i field network slave device configuration.
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