Overview
What are Graphic Operator Terminals?
Graphic operator terminals are high-resolution Human-Machine Interface (HMI) devices used to visualize industrial processes and control machinery. Unlike basic text displays, these terminals feature graphical user interfaces (GUIs) that support complex animations, real-time data trending, alarm management, and diagnostic symbols. They serve as the primary interaction point between the operator and the PLC (Programmable Logic Controller), converting machine data into actionable visual information.
Main Manufacturers
As a specialized distributor, we focus on industry-leading graphic terminals from Siemens. Siemens SIMATIC panels are recognized for their robust construction, long-term availability, and seamless integration with the TIA Portal engineering framework.
Popular Product Families
We stock several key series within the Siemens HMI ecosystem:
- SIMATIC Basic Panels: Cost-effective solutions for simple HMI tasks, available in 4" to 12" displays with integrated touch and key functionality.
- SIMATIC Comfort Panels: High-performance units designed for demanding applications. These feature high-resolution widescreen displays, integrated PROFIBUS and PROFINET interfaces, and data logging capabilities.
- SIMATIC Mobile Panels: Handheld graphic terminals with integrated safety features (Emergency Stop and Enable switches) for direct machine access and line-of-sight operation.
Typical Applications
Graphic operator terminals are utilized across various automated sectors, including:
- Automotive Manufacturing: Monitoring assembly lines and robotic cell diagnostics.
- Food and Beverage: IP65-rated stainless steel panels for wash-down environments.
- Water/Wastewater: Monitoring remote pump stations and flow rates via trend charts.
- Packaging: High-speed adjustment of machine parameters and recipe management.
Selection Guide
When sourcing a graphic terminal, evaluate the following technical specifications:
- Display Size and Resolution: Ensure the screen is large enough to display all necessary PID loops or machine layouts without excessive scrolling.
- Input Method: Choose between resistive touch (operable with gloves) or physical function keys for environments where tactile feedback is required.
- Interface Availability: Confirm compatibility with your existing network (e.g., RJ45 for PROFINET or DB9 for PROFIBUS).
- Environmental Ratings: Determine if the unit requires an IP65 rating for the front face or an ATEX certification for hazardous zones.
- Memory Requirements: Ensure the terminal has sufficient internal memory for recipe storage and historical data logging if a central SCADA system is not present.
58 products
Frequently asked questions
What is the difference between a graphic operator terminal and a text-based terminal?
Graphic operator terminals are HMI devices that support bitmapped graphics, trend logs, and animations, whereas text-based terminals are limited to alphanumeric characters and basic status messages. Graphic terminals allow for more intuitive control through touchscreens and visual representations of machine states.
What are the typical power requirements for these terminals?
Most modern graphic terminals, such as the SIMATIC Comfort and Basic panels, operate on 24V DC. However, some larger stationary units or older legacy models may require 100-240V AC. Always check the specific hardware manual for the wattage requirements to ensure the power supply is sized correctly.
Which communication protocols do Siemens graphic terminals support?
Siemens terminals primarily communicate via PROFINET (Ethernet-based) or PROFIBUS DP. Higher-end models may also support Modbus TCP/IP or EtherNet/IP for integration with non-Siemens PLCs like Allen-Bradley or Schneider Electric controllers.
How do I select the right terminal for a harsh industrial environment?
Consider the IP rating (e.g., IP65 for dust/water protection), the display size (typically 4" to 22"), touchscreen vs. keypad input, and whether the application requires "Outdoor" versions with high-sunlight readability or "Inox" versions for food and beverage environments.
Can I replace an obsolete HMI with a newer graphic operator terminal?
Yes, many older SIMATIC OP (Operator Panel) or TP (Touch Panel) units can be migrated to the newer Comfort Panel series. This usually requires migrating the project in TIA Portal, though physical cutout dimensions may differ, requiring an adapter plate for the cabinet.