
6AG1688-3AF37-2AX0 SIPLUS HMI KP8F PN Industrial Panel
This entry details the Siemens 6AG1688-3AF37-2AX0, a specialized human-machine interface designed for demanding industrial environments. Review the technical specifications below to prepare your project documentation accurately.
Quick Facts
- Part number
- 6AG1688-3AF37-2AX0
- Brand
- Siemens
- Category
- HMI Panels
- Product type
- SIPLUS HMI KP8F PN based on 6AV3688-3AF37-0AX0 with conformal coating, -20
- Lifecycle
- Active Product
- Dimensions
- 18.00 x 10.5 x 6.2 cm
- Net weight
- 0.368 Kg
- Source category
- SIPLUS HMI KP8/KP8F/KP32F
Product Overview
The Siemens 6AG1688-3AF37-2AX0 represents a ruggedized variant within the SIPLUS HMI series, engineered specifically for harsh operational conditions. It integrates conformal coating to protect internal components against moisture, dust, and corrosive agents effectively. Review Siemens 6AG1688-3AF37-2AX0 as hmi panels with source category SIPLUS HMI KP8/KP8F/KP32F, recorded lifecycle Active Product, and submitted model identity.
Based on the standard 6AV3688-3AF37-0AX0 model, this unit extends operational capabilities to temperatures ranging from -20 to +55 degrees Celsius. The design ensures reliable performance in environments where standard panels might fail due to thermal stress.
Technical Review Notes
- The device features eight short-stroke switches equipped with multi-colored LEDs for clear visual feedback during operation. Keep dimensions 18.00 x 10.5 x 6.2 cm and net weight 0.368 Kg unchanged while comparing project documents and product image evidence.
- PROFINET interfaces support PROFIsafe functionality, enabling safe communication protocols essential for complex industrial automation tasks.
- Input and output configurations include eight digital inputs and outputs alongside two dedicated safety digital input pins.
- Power supply requirements specify a 24 V DC connection that can be looped through for simplified wiring setups.
- Physical dimensions are recorded as 18.00 x 10.5 x 6.2 cm, providing a compact footprint for control cabinets.
- Net weight is listed at 0.368 Kg, contributing to manageable installation procedures without excessive structural load.
Model Identification
- The part number 6AG1688-3AF37-2AX0 identifies this specific SIPLUS variant with enhanced environmental protection features.
- Normalization removes hyphens to create 6AG16883AF372AX0 for consistent database indexing and search parameter matching.
- Lifecycle status is currently active, indicating ongoing production and support within the Siemens product portfolio.
- Product class B indicates restricted review notes, requiring direct contact with designated Siemens review contacts for handling.
Technical Parameters
| Product type | SIPLUS HMI KP8F PN based on 6AV3688-3AF37-0AX0 with conformal coating, -20 |
|---|---|
| Lifecycle | Active Product |
| Dimensions | 18.00 x 10.5 x 6.2 cm |
| Net weight | 0.368 Kg |
| Source category | SIPLUS HMI KP8/KP8F/KP32F |
Parameters are factual source fields retained for model review.
Parameter Review
- STEP 7 V5.5 or higher is required to parameterize the loop-through power supply functionality correctly.
- Conformal coating application is a key differentiator, ensuring longevity in high-humidity or chemically aggressive settings.
- PROFIsafe integration allows for safety-related communication over standard PROFINET networks without additional cabling.
- Temperature range expansion from -20°C to +55°C accommodates outdoor or unheated industrial enclosure installations.
Catalog Classification
Image & Label Review
- Visual inspection should confirm the presence of eight distinct short-stroke switches on the front panel surface.
- LED indicators must be verified for correct color coding to ensure proper status interpretation during testing.
- Connector ports for PROFINET and power supply should be checked for physical integrity before submission.
- Labeling on the rear or side must clearly display the full part number for accurate identification.
Product Image Gallery

Inquiry Preparation
- Verify that your project environment falls within the specified -20 to +55 degrees Celsius operating range.
- Confirm that STEP 7 V5.5 software is installed for necessary configuration and parameterization tasks.
- Assess the need for PROFIsafe functionality to determine if this safety-enabled model meets your requirements.
- Prepare detailed project documents specifying environmental conditions to justify the selection of the SIPLUS variant.
Category Context
This unit belongs to the Automation technology sector, specifically within the Key Panels classification group.
It is categorized under SIPLUS HMI KP8/KP8F/KP32F, denoting its family and form factor specifications.
Review Notes
- Ensure all technical parameters align with your facility's specific environmental and electrical standards.
- Cross-reference the normalized part number with internal inventory systems to avoid duplicate or incorrect entries.
- Document any special handling requirements due to the restricted review note associated with product class B.
- Submit inquiries with complete project context to facilitate accurate technical assessment and response generation.



