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.