Siemens SIMATIC S7-200 - Calculating Your Power Requirement

Installing an S7-200 PLC
2-20
S7-200 Programmable Controller System Manual
A5E00066097-02
Calculating Your Power Requirement
Use the table below to determine how much power (or current) the CPU can
provide for your configuration. Refer to Appendix A for the power budgets of your
CPU and the power requirements of your expansion modules.
Power Budget 5 VDC 24 VDC
minus
System Requirements 5 VDC 24 VDC
Total Requirements
equals
Current Balance 5 VDC 24 VDC
Current Balance Total