Siemens SMP-E220-A1 Interface Printed Circuit Board

The Siemens SMP-E220-A1 is an interface printed circuit board (SICOMP) designed as an interface unit for legacy Siemens SICOMP control systems. Also known in catalogs as SMP-E220-A1 and as C8451-A1-A206-5, this module is described by suppliers as a SICOMP SMP-E220-A1 interface board intended for multi-channel communications. It provides two serial interfaces compatible with V.24 and V.28 signaling and includes four to five communications controllers along with a 16-bit counter for basic event or data word counting. It is documented in spare-parts listings for Manroland Colorman printing presses, illustrating its use as a drop-in replacement in older automation equipment. Because SMP-E220-A1 is part of older Siemens SICOMP hardware, buyers typically source it from specialist spare-parts suppliers or repair services that handle aging Siemens components.