EAE Runtime.Base Library Reference

Reference guide for the Runtime.Base standard library - ~100 built-in IEC 61499 function blocks for EcoStruxure Automation Expert.

Use this skill to:

• Find the right block for a task

• Understand block interfaces (events, inputs, outputs)

• Learn correct usage patterns

• Troubleshoot block behavior

Quick Start

User: I need to delay an event by 5 seconds Claude: Use E_DELAY - pass T#5s to DT input, trigger START

User: How do I create a cyclic task? Claude: Use E_CYCLE with DT=T#100ms for 100ms cycle, or E_HRCYCLE for high-resolution

User: What blocks handle MQTT? Claude: MQTT_CONNECTION (setup), MQTT_PUBLISH, MQTT_SUBSCRIBE

Triggers

• /eae-runtime-base

• "which Runtime.Base block"

• "how to use E_DELAY"

• "find block for..."

• "Runtime.Base reference"

• "standard library block"

Library Categories

Category Count Purpose

Basics 14 Event routing primitives (split, merge, select, permit)

Composites 2 Trigger detection (rising/falling edge)

Services 80+ Timers, math, logic, communication, data handling

Resources 2 Embedded resource types

Quick Reference by Task

Event Flow Control

Block Purpose Key Inputs

E_SPLIT

1 event → 2 outputs EI → EO1, EO2

E_MERGE

2 events → 1 output EI1, EI2 → EO

E_SELECT

Route by boolean G (guard), EI0, EI1 → EO

E_SWITCH

Boolean switch G, EI → EO0, EO1

E_PERMIT

Gate events PERMIT, EI → EO

E_DEMUX

1 event → N outputs K (index), EI → EO0..EOn

E_REND

Rendezvous (sync) EI1, EI2, R → EO

Timing

Block Purpose Key Inputs

E_CYCLE

Periodic events DT (period) → EO every DT

E_HRCYCLE

High-res periodic DT, PHASE → EO

E_DELAY

Delay single event DT, START → EO after DT

E_DELAYR

Retriggerable delay DT, START → EO

E_TRAIN

Event train/burst DT, N → N events at DT

E_TABLE

Scheduled sequence DT[], START → EO at times

Edge Detection

Block Purpose Interface

E_R_TRIG

Rising edge EI, QI → EO when FALSE→TRUE

E_F_TRIG

Falling edge EI, QI → EO when TRUE→FALSE

Latches & Flip-Flops

Block Purpose Interface

E_SR

Set-Reset (S dominant) S, R → Q

E_RS

Reset-Set (R dominant) R, S → Q

E_D_FF

D Flip-Flop CLK, D → Q

E_CTU

Up counter CU, R, PV → Q, CV

Arithmetic

Block Purpose Interface

ADD

Addition IN1 + IN2 → OUT

SUB

Subtraction IN1 - IN2 → OUT

MUL

Multiplication IN1 * IN2 → OUT

DIV

Division IN1 / IN2 → OUT

ANAMATH

Analog math Multiple operations

CALC_FORMULAR

Formula evaluation Expression string

Logic

Block Purpose Interface

AND

Logical AND IN1, IN2 → OUT

OR

Logical OR IN1, IN2 → OUT

NOT

Logical NOT IN → OUT

XOR

Exclusive OR IN1, IN2 → OUT

COMPARE

Compare values IN1, IN2 → LT, EQ, GT

SELECT

Conditional select G, IN0, IN1 → OUT

Bit Manipulation

Block Purpose Interface

BITMAN

Bit manipulation Operations on bits

SHL

Shift left IN, N → OUT

SHR

Shift right IN, N → OUT

ROL

Rotate left IN, N → OUT

ROR

Rotate right IN, N → OUT

Communication - MQTT

Block Purpose Key Inputs

MQTT_CONNECTION

Broker connection ServerURI, ClientID, User, Password

MQTT_PUBLISH

Publish messages ConnectionID, Topic, Payload, QoS

MQTT_SUBSCRIBE

Subscribe to topics ConnectionID, Topic

Communication - Other

Block Purpose Key Inputs

WEBSOCKET_SERVER

WebSocket server Port, Path

NETIO

Network I/O IP, Port

SERIALIO

Serial communication Port, BaudRate

QUERY_CONNECTION

HTTP/REST queries URL, Method

Data Handling

Block Purpose Key Inputs

BUFFER

Data buffer IN → buffered → OUT

BUFFERP

Persistent buffer With persistence

ANY2ANY

Type conversion IN (any) → OUT (any)

SPLIT

Split data IN → OUT1, OUT2

AGGREGATE

Combine data IN1, IN2 → OUT

JSON

Block Purpose Interface

JSON_BUILDER

Build JSON Key/Value pairs → JSON string

JSON_PARSER

Parse JSON JSON string → Values

JSON_FORMAT

Format JSON Structured → Formatted

Configuration & Parameters

Block Purpose Interface

CFG_ANY_GET

Get config value Path → Value

CFG_ANY_SET

Set config value Path, Value → OK

CFG_DIRECT_GET

Direct param read Address → Value

CFG_DIRECT_SET

Direct param write Address, Value → OK

PERSISTENCE

Persist values Save/Load from storage

Process Data (PD)

Block Purpose Interface

PD_ANY_IN

Process data input Address → Value

PD_ANY_OUT

Process data output Value → Address

PD_DIRECT_IN

Direct PD read Hardware address

PD_DIRECT_OUT

Direct PD write Hardware address

PD_COPY

Copy process data Source → Destination

System & Diagnostics

Block Purpose Interface

LOGGER

Log messages Message, Level → Log

SYSLOGLOGGER

Syslog logging Remote syslog server

CPUTICK

CPU tick counter → TICK (timing)

REPORT_APP_STATE

Application state State → HMI/OPC-UA

ALARM_BIT

Alarm handling Condition → Alarm

Value Encoding

Block Purpose Interface

VTQ_ENCODE

Value+Time+Quality encode V, T, Q → VTQ

VTQ_DECODE

VTQ decode VTQ → V, T, Q

VALFORMAT

Format value to string Value, Format → String

VALSCAN

Parse string to value String → Value

Resources

Block Purpose Use Case

EMB_RES_ECO

Economy resource Standard applications

EMB_RES_ENH

Enhanced resource High-performance

Common Patterns

Pattern 1: Cyclic Execution

E_CYCLE (DT=T#100ms) └── EO → Your_FB.REQ

Pattern 2: Event Synchronization

Source1.CNF ──┐ ├── E_REND.EI1, EI2 → EO → Next_Step Source2.CNF ──┘

Pattern 3: Conditional Routing

Condition ─── E_SWITCH.G Event ─── E_SWITCH.EI ├── EO0 (when G=FALSE) └── EO1 (when G=TRUE)

Pattern 4: MQTT Publishing

MQTT_CONNECTION (ServerURI, ClientID) │ ├── INITO → MQTT_PUBLISH.INIT (ConnectionID) │ │ │ └── INITO → Ready to publish │ └── CONNECTO → Connection established

Pattern 5: Delayed One-Shot

Trigger ─── E_DELAY.START (DT=T#5s) │ └── EO → Action (5s later)

Block Interface Conventions

All Runtime.Base blocks follow IEC 61499 conventions:

Element Convention

INIT

Initialization event input

INITO

Initialization confirmation output

REQ

Request event input

CNF

Confirmation event output

QI

Input qualifier (BOOL)

QO

Output qualifier (BOOL)

STATUS

Status string output

Scripts

Block Lookup

Search Runtime.Base blocks by keyword, category, or list all:

Search for blocks matching keyword

python scripts/lookup_block.py "delay"

Returns: E_DELAY, E_DELAYR

Show categories with search results

python scripts/lookup_block.py "mqtt" --category

Returns: MQTT_CONNECTION, MQTT_PUBLISH, MQTT_SUBSCRIBE [MQTT]

List all block categories

python scripts/lookup_block.py --list-categories

List all blocks

python scripts/lookup_block.py --list-all

JSON output for automation

python scripts/lookup_block.py "timer" --json

Features:

• Searches block names, descriptions, and keywords

• Supports 17 categories covering ~100 blocks

• JSON output for CI/CD integration

Exit codes:

• 0

• Success (matches found or list completed)

• 1

• Error (invalid arguments)

• 2

• No matches found

Troubleshooting

Issue Check

Block not firing Verify input events are connected

E_CYCLE not running START event must be triggered

MQTT not connecting Check ServerURI format, credentials

Timer drift Use E_HRCYCLE for precision

Data not updating Check With associations in events

Related Skills

Skill Relationship

eae-se-process

Higher-level process blocks (motors, valves, PID) built on Runtime.Base

eae-basic-fb

Create custom Basic FBs

eae-composite-fb

Create Composite FBs using these blocks

eae-cat

Create CAT blocks

eae-skill-router

Main EAE skill router

References

• Block Catalog - Complete block listing with details

• Common Patterns - Usage patterns and examples

Extension Points

• Add new blocks as Runtime.Base library expands

• Create domain-specific pattern guides (MQTT, timers, etc.)

• Add troubleshooting flowcharts for common issues