Extended temperature S7-200 I/O
The Siemens 6AG1221-1BF22-2XB0 is a SIPLUS variant of the S7-200 EM221 digital input module, rated for -25 to +70°C. It is designated a spare part and carries a lifecycle status of current, meaning it remains in the active Siemens portfolio for replacement and maintenance of existing S7-200 systems.
Compatibility with the standard EM221
This SIPLUS module is based on the standard 6ES7221-1BF22-0XA0 EM221. The hardware footprint, I/O mapping, and backplane connector are identical. The only difference is the extended temperature silicon and conformal coating that qualify it for the -25 to +70°C operating band. If your BOM currently calls out the standard 6ES7221-1BF22-0XA0, this SIPLUS unit is a direct form-fit-function replacement.
Sourcing for S7-200 spares
Availability is confirmed at quote time against the specific BOM quantity.