Schneider Easergy P5 Communication Protocol Complete Guide

Single Point Information (SPI)

Double Point Information (DPI)

Analog Input (AI)

Simulated Event (AE)

Total points (IT)

Command (CMD)

Scaling mechanism:

The measured value can be configured as a scaled value, normalized value, or floating point value. Scaling formula: valueScaled=k × valueInternal

6.2 IEC 60870-5-103

This protocol is used to protect communication between devices and control systems. Easergy P5, as a secondary station (slave), supports the following ASDU types:

ASDU 1: Messages with time stamps

ASDU 3: Measurement value I

ASDU 4: Measurement values with relative time scales

ASDU 5: Identification Message

ASDU 6: Time synchronization

ASDU 8: Total query termination

ASDU 9: Measurement Value II

Set data read and write:

Support reading and writing setting parameters through ASDU 140, 143, 144, 201, with each setting item addressed through FUN and INF.

7. EtherNet/IP protocol: Industrial Ethernet standard

EtherNet/IP is an industrial Ethernet standard based on CIP (Common Industrial Protocol), with Easergy P5 working as an adapter.

7.1 Message Types

Unconnected Message (UCMM): A single request/response used to establish a connection

Explicit message (Class 3): point-to-point connection, used for cyclic querying of data, supports up to 6 simultaneous connections

I/O message (Class 1): point-to-point or multicast, used for cyclic I/O data exchange, supports only one connection

7.2 Object Model

The standard objects implemented by Easergy P5 include:

Identity Object (0x01): Device identifier

Message Router (0x02): Message Router

Assembly Object (0x04): Data Assembly

Connection Manager (0x06): Connection Management

TCP/IP Interface (0xF5): TCP/IP interface

Ethernet Link (0xF6): Ethernet Link

Application target:

Control Supervisor（0x29）

Overload（0x2C）

Digital（0x64）

Analog（0x65）

StgProtCurrent（0x66）

StgProtEF（0x67）

StgProtOther（0x68）

StgGeneral（0x69）

7.3 I/O Assembly Examples

Static assembly (Examples 2 and 50): User cannot modify content

Dynamic assembly (instances 100 and 150): Users can select data items, up to a maximum of 128 bytes

Any configuration changes require the generation of a new EDS (Electronic Data Sheet) file, which is generated through eSetup Easergy Pro and cannot be directly extracted from the device.

8. Network redundancy protocol

8.1 Parallel Redundancy Protocol (PRP)

PRP transmits frames in parallel on two independent networks (LAN A and LAN B), with the receiving device responsible for discarding redundant frames and providing 0 milliseconds of fault recovery time.

Key features:

Dual Attachment Nodes (DANPs) use the same MAC and IP addresses

The Link Redundancy Entity (LRE) is responsible for frame replication and deduplication

Support single attached node (SAN) connection through redundant box (RedBox)

8.2 High availability seamless redundancy (HSR)

HSR is used for ring network topology, where frames are transmitted bidirectionally along the ring, and the receiving device discards redundant frames, providing a 0 millisecond recovery time.

Key features:

Dual Attachment Nodes (DANH) Running in a Loop

LRE includes a switching matrix that supports direct switching

Add HSR labels to each frame for duplicate detection

8.3 Fast Spanning Tree Protocol (RSTP)

RSTP eliminates loops by transforming the mesh topology into a tree topology, and the recovery time depends on the network size and topology (<50ms/10 devices).

Configuration parameters:

Bridge Priority 

Hello Time（2s）

Forward Delay（15s）

Max Age（20s）

Port path cost and priority

9. Time synchronization

9.1 Precision Time Protocol (PTP)

PTP (IEEE 1588v2/IEC 61588) provides microsecond level accuracy and is only supported on PRP/HSR modules. It supports transparent clock (TC) and best master clock algorithm (BMCA).

9.2 Simple Network Time Protocol (SNTP)

SNTP is used for system clock synchronization and can be configured with a primary NTP server and a backup NTP server. The IP address can be configured in the CID file.

10. Network security features

10.1 Client IP Address Filtering

Easergy P5 supports IP address whitelist functionality based on CIDR (Classless Inter Domain Routing) notation:

Only allow connections from IP addresses in the list after activation

Up to 8 IP address ranges can be configured

The number of dynamic connections should not exceed 8

Effective immediately after modification, no need to restart

10.2 Secure Communication

SSH: Used for secure communication between eSetup Easergy Pro and devices (port 22)

HTTPS: Used for Web HMI access

SFTP: Used for secure file transfer

10.3 SCADA Access Control

The 'Via SCADA' parameter allows for the prohibition of setting changes and control commands through SCADA protocols (Modbus, IEC 61850, IEC 103), while retaining access to local HMI, USB, and eSetup Easergy Pro.