IEC 60870-5-101 Communication Protocol on PowerLogic P5 Protection Relays

Issue:

How to configure and use IEC 60870-5-101 protocol for PowerLogic P5 relays, including supported features, data mapping, and integration requirements.

Product:

PowerLogic P5 Protection Relay

Environment:

SCADA systems using IEC 60870-5-101 over serial RS-485 or fiber optic
Industrial automation networks requiring standardized telecontrol
Configuration tools: eSetup Easergy Pro, Web HMI

Cause:

IEC 60870-5-101 is a widely used protocol for telecontrol and event reporting in substations. Incorrect configuration of addressing, scaling, or control parameters can lead to communication failures, missing events, or improper control execution.

Resolution:

• Protocol Support:
• Serial communication only (RS-485 or fiber)
• Configurable via COMMUNICATION menu or eSetup Easergy Pro/Web HMI
• Device reboot required after protocol changes
• Data Model:
• Supports 64 Single Point Information (SPI), 32 Double Point Information (DPI), 32 Analog Inputs (AI), 16 Accumulated Energy (AE), 16 Integrated Totals (IT), and 8 Command objects
• Extensive mapping for protection, measurement, control, alarms, counters, and settings
• Functions Supported:
• Overcurrent (I>1–6), earth fault (IN>1–6), voltage (V>1–3, V<1–3), frequency (f>1–8, f<1–8), df/dt, differential, inrush, arc, motor, feeder, CB fail, synchro-check, fault locator
• Control Capabilities:
• Open/Close, Select/Execute for up to 6 objects
• Setting group change, clear min/max/demand, latch release
• Event Reporting:
• 250-event buffer with detailed event codes for protection, CB, arc, RTD, GOOSE, and environmental conditions
• Communication Parameters:
• Bit rate: 1200–115200 bps
• Link address: 1–254; ASDU address: up to 65534
• Supports 2/3-byte IO addressing, time tagging, and deadband configuration
• Security:
• No encryption; use network segmentation, firewalls, and IP whitelisting
• Protocol access configurable as read-only or read-write
• Integration:
• Fully documented mapping tables for SCADA integration
• Scaling examples: 1.00 pu = 100, 50.00 Hz = 5000

Released for: Schneider Electric Indonesia