Enabling/Disabling I-Device In The User Program Of The I-Device Cpu - Siemens SIMATIC ET 200AL System Manual

Functions
5.2 Intelligent IO devices (I-devices)
5.2.11

Enabling/disabling I-device in the user program of the I-device CPU

When a PROFINET interface of a CPU was configured as an I-device in STEP 7, the I-device
function is active after a status transition of the CPU from STOP > RUN. If no higher-level IO
controller can be reached in this case, the I-device CPU signals an error using its ERROR LED.
As of firmware version 2.9 of an S7-1500/ET 200SP/ET 200pro CPU, you can locally disable or
enable the I-device function in the user program of the I-device CPU. You use the "D_ACT_DP"
instruction for this. After disabling the function, the I-device CPU no longer signals an error
using its ERROR LED.
You can enable/disable the function with the user program at the CPU-internal PROFINET
interfaces and for S7-1500 CM 1542-1 as of firmware version V3.0.
144
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL