The GE Fanuc IC693CHS398 is a 5-slot expansion baseplate specifically designed for use with the GE Series 90-30 modules. This unit functions as an essential component in a modular control system, operating in tandem with a CPU, which may be part of either a programmable logic controller (PLC) or a personal computer equipped with a Personal Computer Interface Card. It is crucial to note that the IC693CHS398 cannot operate as a stand-alone unit; it must be connected to a CPU baseplate within a maximum distance of 50 feet using interconnecting cables. The number of remote baseplates that can be utilized depends on the specific CPU model: CPUs 331, 340, and 341 can support up to four remote baseplates, while CPUs 350 and above can accommodate up to seven. Furthermore, this remote backplane does not support specific option modules, including PCM, CMM, ADC, and BEM330, which must be installed in a CPU baseplate. However, it is compatible with all other option and I/O modules. The IC693CHS398 features a 25-pin female D-type expansion connector on the right-hand side for linking to additional baseplates and incorporates a Rack Number Selection DIP switch for installation configuration. All expansion modules connected to this baseplate must be grounded through a common reference. With dimensions of 10.43 x 5.12 x 5.59 inches and an internal power consumption of 170 mA at 5 VDC, this expansion baseplate is an integral part of modular control solutions.