Siemens Simatic S7-1500/ET 200MP System Manual page 170

Example for the assignment of channel addresses (digital module)
The following figure shows how the addresses of the individual channels of the digital input
module (e.g., 6ES7521-1BL00-0AB0) are determined.
Figure 7-8
Note
You can assign symbolic names to the addresses at the following locations in STEP 7:
• PLC tag table
• Properties of the module in the "IO Tags" tab.
Automation system
System Manual, 12/2017, A5E03461182-AE
Example for the assignment of channel addresses (digital module)
Configuring
7.1 Configuring the CPU
169