The core and services

EVA ICS v4 provides a powerful core, which holds item inventory and routes actions. Each EVA ICS node has got the own core instance.

Node functionality can be extended with services - small processes which are launched by core launchers, interact with the core and each other via the local ultra-fast IPC bus and extend functionality of EVA ICS nodes.

Contents

• The core and services

  • V4 Core

  • The default services

    • Authentication, Authorization and Accounting

    • SCADA automation

    • Databases and data storages

    • Data replication

    • Digital twins and process simulation

    • Fieldbus and external equipment

    • System services

    • User interfaces, HMI

    • Other services

V4 Core

See The core

The default services

The default services are either bundled into EVA ICS (Rust services) or provided as separate modules (e.g. Python services).

More services can be found in service contribution repository, provided by integrators or developed using Software Development Kit (SDK).

Authentication, Authorization and Accounting

Description	Suggested name	Executable	Deployed
Active directory auth service	eva.aaa.msad	svc/eva-aaa-msad	requires EVA ICS Enterprise
Default ACL service	eva.aaa.acl	svc/eva-aaa-acl	by default with HMI (–hmi)
Event accounting service	eva.aaa.accounting	svc/eva-aaa-accounting	requires EVA ICS Enterprise
Local user/key authentication service	eva.aaa.localauth	svc/eva-aaa-localauth	by default with HMI (–hmi)
OTP 2nd-Factor authentication service	eva.aaa.otp	svc/eva-aaa-otp

See also: Authentication, authorization and accounting

SCADA automation

Description	Suggested name	Executable	Deployed
Item state expiration service	eva.svc.expN	svc/eva-svc-expiration
Logic manager	eva.controller.lmN	svc/eva-controller-lm
Mailer service	eva.svc.mailer	svc/eva-svc-mailer
Python macros controller	eva.controller.py	venv/bin/eva4-svc-controller-py	requires eva4-controller-py Python module
Script runner controller	eva.controller.srN	svc/eva-controller-sr
Shared lock service	eva.svc.lockerN	svc/eva-svc-locker

See also: Automation

Databases and data storages

Description	Suggested name	Executable	Deployed
InfluxDB state history	eva.db.iN	svc/eva-db-influx
Item state file writer (JSON/CSV)	eva.svc.fwriterN	svc/eva-svc-filewriter
SQL databases state history	eva.db.sN	svc/eva-db-sql
TimescaleDB databases state history	eva.db.timescaleN	svc/eva-db-timescale

Data replication

Description	Suggested name	Executable	Deployed
Legacy (V3) replication service	eva.repl.legacyN	venv/bin/eva4-svc-repl-legacy	requires eva4-repl-legacy Python module
Replication service	eva.repl.N	svc/eva-repl
Zero-failure replication service	eva.zfrepl.N.collector|replicator	svc/eva-zfrepl	requires EVA ICS Enterprise

See also: Node replication

Digital twins and process simulation

Description	Suggested name	Executable	Deployed
Data generator	eva.generator.default	svc/eva-svc-generator
Virtual controller	eva.controller.virtN	svc/eva-controller-virtual

See also: Virtual Fieldbus Simulator

Fieldbus and external equipment

Description	Suggested name	Executable	Deployed
1-Wire (OWFS) controller	eva.controller.w1_N	svc/eva-controller-w1
Bus UDP bridge	eva.bridge.udpN	venv/bin/eva4-svc-bridge-udp	requires eva4-bridge-udp Python module
Data objects I/O controller	eva.controller.dobj	svc/eva-controller-dobj
Ethernet/IP PLC controller gateway	eva.controller.enipN	svc/eva-controller-enip
Modbus master controller	eva.controller.modbusN	svc/eva-controller-modbus
Modbus slave service	eva.svc.modbusN	svc/eva-svc-modbus-slave
OPC-UA controller gateway	eva.controller.opcuaN	svc/eva-controller-opcua
Pub/Sub (MQTT) controller gateway	eva.controller.pubsubN	svc/eva-controller-pubsub
SNMP/UDP trap handler	eva.controller.trapN	svc/eva-controller-trap
TwinCAT ADS bridge	eva.bridge.adsN	svc/eva-bridge-ads
TwinCAT ADS controller	eva.controller.adsN	svc/eva-controller-ads

See also: Fieldbus and IoT protocols and equipment

System services

Description	Suggested name	Executable	Deployed
Docker Application launcher	dapp.NAME	svc/eva-dapp
FFI launcher	custom.name	svc/eva-ffi
File manager service	eva.filemgr.main	svc/eva-filemgr	always by default
Mirror service	eva.svc.mirror	svc/eva-svc-mirror
System monitoring controller	eva.controller.system	svc/eva-controller-system

User interfaces, HMI

Description	Suggested name	Executable	Deployed
HMI kiosk manager	eva.kioskman.default	svc/eva-kioskman	requires EVA ICS Enterprise
HMI service	eva.hmi.default	svc/eva-hmi	by default with –hmi arg

See also: Interface development (HMI apps)

Other services

Description	Suggested name	Executable	Deployed
Text-to-speech service	eva.svc.tts.PROVIDER	venv/bin/eva4-svc-tts	requires eva4-svc-tts Python module