In today's highly automated industrial sector, DCS (Distributed Control System) plays a pivotal role. ABB's 800xA System stands out as a leader, earning widespread recognition for its powerful functionality, flexible configuration, and exceptional performance.     I. Data Parameters As a communication interface module in the S800 series, CI801 bears the responsibility of communicating with Profibus-DPV1 networks. Its main data parameters are as follows: Communication Standard: Supports the PROFIBUS-DPV1 communication standard. Supply Voltage: 24V (19.2~30V d.c.). Isolation Voltage Rating: 50V. Maximum Number of S800 I/O Stations: Can reach up to 99 stations in a standalone configuration; supports 62 stations in a redundant configuration (e.g., using CI840). Bus Scan Cycle: Depends on the type and number of I/O modules, but performance reference data for the CI801 module indicates that the system can accommodate various scales of I/O configurations. Number of I/O Modules withi...