Siemens SITOP series - Naming the PSU8600 Device for S7-300;400

SIMATIC STEP 7 function blocks
5.2 FB SITOP_PSU8600/SITOP_PSU8600_1
SITOP PSU8600 Firmware V1.4: Faceplates and Communication Blocks V2.4 for SIMATIC STEP 7 V14 SP1, V15 and V15.1 (TIA)
Function Manual, 11.2018, A5E37763954-09-76
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5.2.1
Naming the PSU8600 device for S7-300/400
Device_name_PSU8600
The device name of SITOP PSU8600 must be entered in the instance data block of
FB SITOP_PSU8600 as a start value (A) of input parameter
Device_name_PSU8600 (B).
Use the address of the input parameter as the address for the device name at
FB SITOP_PSU8600 (C).
Figure 5-3