6ES7158-0AD01-0XA0 Siemens SIMATIC DP DP/DP Coupler ET200

6ES7158-0AD01-0XA0 Siemens SIMATIC DP DP/DP Coupler ET200

1.Overview of the 6ES7158-0AD01-0XA0 Siemens

The Siemens 6ES7158-0AD01-0XA0 is a SIMATIC DP DP/DP coupler. Its core function is to solve data isolation and communication issues between multiple PROFIBUS-DP networks in industrial automation. When your factory or equipment has two physically or logically independent DP networks that need to exchange data, the DP/DP coupler acts as a "translator" and "messenger," building a secure and reliable bridge between them.

Powerful Network Interconnection: This coupler module is equipped with two completely independent PROFIBUS-DP interfaces, each functioning as a slave on its own DP network. It can exchange up to 244 bytes of input/output data and handle up to 16 independent input/output areas, providing ample capacity for complex data communication.

High Reliability: The module provides electrical isolation between the two DP networks, meaning that an electrical fault on one network will not affect the other, significantly improving system stability. Furthermore, if the power or network fails on one side of the coupler, the output data on the other side retains the last valid value, preventing uncontrolled system conditions caused by communication interruption.

Flexible Configuration and Diagnostics: The PROFIBUS address can be easily set using the DIP switches on the top of the module, eliminating the need for complex software tools. Software configuration is also supported via STEP 7 or by importing a GSD file, providing maximum flexibility. The module also supports comprehensive diagnostics according to the DPV1 standard, facilitating rapid troubleshooting.

2.Core Features:

I. Core Functions
Establishes a transparent, high-speed, electrically isolated data channel between two independent PROFIBUS-DP bus segments. No PLC programming is required, and master-to-master or master-to-slave data (up to 244 bytes in/244 bytes out) is automatically mapped.
Supports redundant 24 V power supply with automatic failover in the event of a fault, ensuring continuous system operation.
Two sets of DIP switches on the top allow for station address configuration in 1 minute, with plug-and-play functionality.
Integrated LED diagnostics and hot-swappable functionality ensure continuous maintenance.

II. Technical Specifications
Order Number: 6ES7158-0AD01-0XA0
Product Family: SIMATIC ET200, DP/DP Coupler
Number of Interfaces: 2 × 9-pin Sub-D (isolated)
Baud Rate: 9.6 kbit/s to 12 Mbit/s, automatic identification
Data Volume: Up to 244 bytes of I/O per direction
Station Address Range: 1 to 125 (independent on each side)
Supply Voltage: DC 20.4 … 28.8 V, redundant terminals
Typical current 90 mA @ 24 V
Power consumption ≤ 2 W
Galvanic isolation 500 V (bus & power on both sides)
Protection class IP20
Operating temperature –25°C … +60°C
Dimensions 40 × 127 × 117 mm (W × H × D)
Mounting method 35 mm DIN rail, any orientation
Certifications CE, UL, ATEX Cat. 3G (Zone 2)

III. Feature Highlights
No programming required: Automatic data area mapping, no additional STEP7/TIA configuration required
Isolation and interference immunity: Stable operation with a ground potential difference of ≤ 500 V between the two bus segments
Redundant power supply: Two 24 V power lines are connected simultaneously; the module remains operational even if either line loses power
Online diagnostics: SF, BF, ON, and 24 V LEDs quickly locate wire breaks, short circuits, and power failures
Hot-swappable: Replaceable during operation without affecting the DP on both sides Network
Address Switches: Two 8-bit DIP switches on the top, configurable from 1 to 125, complete in 1 minute
Multi-protocol Compatibility: Supports DP-V0, DP-V1, and DP-V2 messages, enabling seamless mixed network operation
Wide Temperature Design: -25°C cold storage, +60°C boiler-side operation
ATEX Zone 2: Can be deployed directly in Zone 2 without an additional isolation barrier
Compact: 40 mm wide, single-layer terminals, saving 30% cabinet space

IV. Typical Applications
Shared remote I/O between two S7-300/400 PLC masters
Extending a new segment using a coupler when the existing system segment has reached its 32-station limit
Safe coupling between different grounding systems (IT/TN)
Cross-link data exchange between redundant CPUs and standard CPUs
Independent commissioning and subsequent integration of "equipment modules" in large production lines

3.Product details pictures

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