Arrangement for redundant control system

An arrangement comprising:

• a first rack including a plurality of slots for receiving individual assemblies, which form a first automation system when assembled in a modular manner;
• and
• a second rack including a further plurality of slots for receiving further individual assemblies, which form a second automation system when assembled in a modular manner;
• wherein a slot of the first rack is formed as a first supply module receptacle with a first contact;
• wherein a slot of the second rack is formed as a second supply module receptacle with a second contact;
• wherein the first and the second supply module receptacles are constructed such that said first and the second supply module receptacles electrically and structurally complement one another between the first rack and the second rack to form a supply base module;
• wherein the first contact is configured to supply the first and the second rack with a supply voltage and the second contact is configured to supply the second and the first rack with the supply voltage, and
• wherein the supply base module formed by the first and second supply module receptacles is configured to receive a first supply voltage module, a second supply voltage module and a third supply voltage module.