Telemetry gateway PCS-9794

industrialcommunicationserial

Overview
PCS-9794 is a protocol converter for substation automation systems (SAS). It acts as a communication manager that maps and translates signals between station-level SCADA/protection management units and bay-level IEDs. The device supports protocols such as IEC 61850, IEC 60870-5-103 and Modbus, and provides serial and Ethernet communication interfaces for flexible integration.

Functions

• Protocol conversion — Enables signal conversion and data exchange between station-level and bay-level networks to meet diverse project requirements.
• IED data acquisition — Collects SOE, operation signals and measurements from relays, meters and other IEDs via serial and Ethernet ports.
• SCADA/RTU communication — Interfaces with local SCADA and protection management systems and can forward data to dispatch or distributed control centers via RTU; mapping tables are independently configurable.
• Communication supervision — Monitors communication status with customizable mapping and status reporting.
• Signal synthesis — Supports configuration-based logical and arithmetic operations (AND, OR, NOT, XOR, +, -, ×, ÷) for synthesized signals transmitted to remote control centers.
• Local binary outputs — Optional I/O module provides configurable local outputs controlled via auxiliary software.
• Configurable LED HMI — Front-panel LEDs indicate binary states (alarm, communication, switchgear position); selectable colors (green, red, yellow) for configurable indicators.
• Access control — Critical operations (remote control, setting changes) require user authority; passwords configurable via local LCD.
• Command logging and query — Records commands and operations (control execution, settings, resets) with searchable and filterable logs.
• Event history — Automatically logs service events, state changes, IED alarms and communication failures.
• Dual-device redundancy — Supports redundancy strategies with two electrically independent devices (separate power, communications and firmware) and inter-device electrical/network exchange.
• Consistent IP for dual network — In downlink dual-network (master/slave) mode both devices present the same substation IP to IEDs.
• Time synchronization — Supports PPS, PPM, IRIG-B, timing messages and SNTP for unified clocks across connected IEDs.
• Online maintenance & monitoring — Network-enabled monitoring of device status, port messages, on-field configuration, database view, virtual measurement, file transfer and remote reboot to facilitate upgrades.
• Self-diagnosis — Continuous hardware and software supervision; on fault the device blocks operations and issues alarms; in redundancy mode a backup device can take over.

Technical specifications

• Model: PCS-9794
• Supported protocols: IEC 61850, IEC 60870-5-103, Modbus
• Communication interfaces: Serial ports and Ethernet ports
• Optional I/O module for configurable local binary outputs
• LED HMI indications configurable in three colors (green, red, yellow)
• User authority and password management configurable via local LCD
• Command and event recording with query and filter functions
• Redundancy: dual-device strategies with independent power, communications and firmware; inter-device electrical and network exchange
• Consistency IP support for master/slave downlink dual-network mode
• Time sync: PPS, PPM, IRIG-B, timing message, SNTP
• Signal synthesis: logical (AND, OR, NOT, XOR) and arithmetic (+, -, ×, ÷) operations
• Online maintenance/monitoring: running status, port message display, on-field configuration, database view, virtual measurement, file transfer, remote reboot
• Self-diagnosis with automatic blocking and backup takeover in redundancy mode
• Customizable mapping/transmission tables for SCADA/RTU