Machine control

SUBJECT

Field

Type

Description

Purpose

ID (subject identifier)

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machinecontrol

GRAMMAR

Subject name

M

Machine control

GRAMMAR

Subject type

M

Device

TIC Description

Also known as

O

TIC Description

Definition

M

Machine Control executes the lowest-level control function through PLCs, drive controllers, motion controllers and safety relays.

TIC Description

Further Detail

O

Machine Control executes Tasks received from Execution Control and ensures deterministic, safe operation, In addition to actuation and control, it is also the source of telemetry. Machine Control shall support, at minimum, the following:

Low-Level Command Execution

a) Execute Tasks(e.g. Gantry from Coordinate to Coordinate) as sent by Execution Control.

b) Ensure actuation Actuation.

Signal Processing

a) Process inputs from sensors (e.g. proximity, weight, speed, torque, GPS, vision systems).

b) Communicates processed data to Execution Control.

Real-Time Deterministic Control

a) Operate under strict Real-Time cycles (milliseconds level).

b) Ensures predictable and repeatable machine behavior independently of upstream system variability

Safety Layer

a) Implement and manage all safety-critical functions, including emergency stops, interlocks, and other safety circuits.

b) Operate independently from non-safety control layers, with physical and logical segregation to guarantee integrity of safety functions.

Local Feedback

a) Communicates continuous status of the equipment in operation.

b) Communicates anomalies, alarms, and degraded conditions upstream to Execution Control.

Telemetry to Asset Health Management systems (Dotted Line)

a) Operational & engineering metrics: loads, motor currents, energy/fuel consumption, braking cycles.

b) Condition & health indicators: vibration, temperatures, component wear, fatigue metrics, cycle counts.

c) Events & safety signals: faults, alarms, resets, emergency stops, and safety circuit activations.

d) Lifecycle & usage metrics: operating hours, start/stop counts, utilization cycles,.

e) Data integrity & availability: timestamped, high-resolution data ensuring consistency for analytics.

Boundaries

With Execution Control: Machine Control executes Tasks and returns operational status.
With Real Time Asset Supervision: Machine Control exposes health telemetry.

System Characteristics

Operates at strict real-time cycle.
Fully deterministic and vendor/device specific.
Telemetry flow to shall be non-intrusive, ensuring operational control cycles remain unaffected.
Data shall be standardized (TIC4.0 Data Models and Interfaces) and time stamped for interoperability.
Provides the diagnostic for remote troubleshooting and maintenance planning.
In degraded conditions, Machine Control may operate autonomously (e.g., safe shutdown).

Machine Control Functional Matrix

Function	ISA-95 Level	Role in Machine Control
Low-Level Command Execution	Level 0/1	Direct actuation of motors, hydraulics, spreader locks, brakes.
Signal Processing	Level 0/1	Captures raw sensor signals and pre-processes for higher levels.
Real-Time Deterministic Control	Level 0/1	Ensures deterministic actuation cycles (ms level).
Safety Layer	Level 0/1	Local emergency stop, overload protection, safety relays.
Local Feedback	Level 0/1 → L2	Sends execution status (job done, error) to Execution Control.
Telemetry (Dotted Line)	Level 0/1 → L3/L4	Exposes operational + condition data to AHM via SCADA/OPC UA block.
Boundary with Execution Control	Level 0/1 ↔ L2	Executes commands and confirms completion.
Boundary with AHM	Level 0/1 → L4	Provides non-operational telemetry for monitoring, diagnostics, and predictive maintenance.

TIC Description

Related standards

O

ISA-95

TIC Description

Related TIC 4.0 definition

O

Scheduling R2025.017 Dispatching R2025.017 , Execution control

TIC Description

Example

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N/A

DATA MODEL

Example in the context of the grammar

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N/A

DATA MODEL

Link to one or more operational processes

M

TIC Description

Search tags

#automation, #isa95, #execution control, #planning, dispatching,

Technical

Version / Date

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2026.019 - 05/05/2026

Technical

Internal TIC Version

M

2026019

Technical