SNAP serial communication modules are designed for use with the SNAP PAC System and can also be used in I/O units without a controller. Each module provides one or two channels of serial data—RS-232 or RS-485/422—at a remote Ethernet location, on the same mounting rack with digital and analog I/O.

This document describes the SNAP-SCM-232 and SNAP-SCM-485-422 serial communication modules.

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