General-Purpose Counter/Timer Module for SCC—The SCC-CTR01 is an SCC signal conditioning module that can extend the input voltage range up to 48 VDC for compatible multifunction I/O devices and modules, and it can add isolation for the general-purpose counters. To use the SCC-CTR01 module, you must also have a multifunction I/O device or module, an appropriate cable, and an SCC-2345 carrier. You can use up to two SCC-CTR01 modules per SCC-2345 carrier.