Siemens Simatic PCS 7 Function Manual page 49

Note
No redundant Actuators and sensors with ET 200SP HA
ET 200SP HA is optimized for Redundant I/O and uses a single sensor/actor connected to a
pair of I/O-modules (redundant channel pair).
So you can't connect a pair of actuators/sensors.
Additional information
● Manual
High Availability Process Control Systems (V9.0)
Function Manual, 05/2017, A5E39221836-AA
Automation System S7-400H; High Availability Systems
High availability solutions in PCS 7
4.1 Solutions for the I/O
49