The Siemens 6ES7222-1BF22-0XA8 is a spare-part digital output expansion module for the S7-200 CN family. It provides 8 digital outputs rated at 0.75 A per channel at 24 V DC, drawing 2 W typical from the backplane bus. This is the CN variant — intended for the China-market S7-22X CPU line — and carries CE approval only, not UL or CSA.
Each of the 8 outputs is rated 0.75 A for signal '1' — that's the maximum continuous current per channel driving a resistive or inductive load such as a contactor coil or indicator lamp. The module has no internal short-circuit protection, so the buyer must fuse each output group externally or rely on the load's own protection. Typical power loss of 2 W is drawn from the 5 V DC backplane bus; the 24 V DC load supply is separate and must be provided externally.
Dimensions are 62 mm deep, 45 mm wide, and 80 mm tall. The 45 mm width occupies one slot.