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Siemens SIMATIC DP/PA Link FDC 157 Field Device Coupler 6ES7157-0AC85-0XA0
Manufacturer: Siemens
Condition: Brand New
Lead Time: In Stock
Origin: Germany
Warranty: 12 Months
Email: [email protected]
whatsApp: +86-18150117685
- Overview
- Product Overview
- Key Functions
- Official Specifications
- Frequently Asked Questions
- Compatibility & Ordering Notes
- Hot Selling Models
- Recommended Products
Overview
SIEMENS · SIMATIC DP/PA Link
6ES7157-0AC85-0XA0 SIMATIC DP/PA Link FDC 157 Field Device Coupler
The SIMATIC FDC 157 field device coupler links PROFIBUS DP networks with PROFIBUS PA or Foundation Fieldbus segments and supports up to 31 connected field devices.
At a Glance
| Brand | Siemens |
|---|---|
| Model | 6ES7157-0AC85-0XA0 |
| Product Type | PROFIBUS DP to PA field device coupler |
| Core Function | Couples a PROFIBUS DP master system to PROFIBUS PA or Foundation Fieldbus devices |
| Application or Compatible Series | SIMATIC process automation networks using DP/PA Link or Foundation Fieldbus |
Exact Identification
Match 6ES7157-0AC85-0XA0 character by character and confirm the complete SIMATIC DP/PA Link FDC 157 Field Device Coupler designation.
Interface Arrangement
Confirm the installed supply, ports, field connections and required accessories before wiring the replacement.
Configuration Check
Preserve the approved engineering project, network parameters and application data used by the installed system.
Product Overview
The SIMATIC FDC 157 field device coupler links PROFIBUS DP networks with PROFIBUS PA or Foundation Fieldbus segments and supports up to 31 connected field devices.
The coupler transfers cyclic communication between a PROFIBUS DP master network and a 31.25 kbit/s PA or Foundation Fieldbus segment. Up to 31 field devices can be connected with a maximum available device current of 1 A. Status indicators, diagnostic functions and alarm support assist commissioning and fault localization.
Key Functions
DP-to-Fieldbus Coupling
The coupler transfers cyclic communication between a PROFIBUS DP master network and a 31.25 kbit/s PA or Foundation Fieldbus segment.
Field Segment Capacity
Up to 31 field devices can be connected with a maximum available device current of 1 A.
Integrated Diagnostics
Status indicators, diagnostic functions and alarm support assist commissioning and fault localization.
Official Specifications
| Rated Supply | 24 V DC |
|---|---|
| Permitted Supply Range | 20.4 to 28.8 V DC |
| Maximum Current Consumption at 24 V | 2.3 A |
| Power Loss | 13.4 W |
| PROFIBUS DP Interface | 9-pin Sub-D |
| Maximum PROFIBUS DP Rate | 45.45 kbit/s |
| PROFIBUS PA Rate | 31.25 kbit/s |
| Maximum Field Devices | 31 |
| Maximum Field-Device Current | 1 A |
| Supply Hold-Up Time | 5 ms |
| Reverse-Polarity Protection | Available |
| Overvoltage Protection | Available |
| Diagnostics and Alarms | Supported |
| Storage Temperature | -40 to +70 °C |
| Maximum Installation Altitude | 3,000 m |
| Maximum Relative Humidity | 95% |
| Module Dimensions | 80 x 125 x 130 mm |
| Net Weight | 550 g |
Frequently Asked Questions
How many field devices can 6ES7157-0AC85-0XA0 support?
A correctly designed segment can connect up to 31 field devices within the available current budget.
Which fieldbus segments can connect through 6ES7157-0AC85-0XA0?
It supports PROFIBUS PA and Foundation Fieldbus segment coupling.
What transmission rate is used on the PA side of 6ES7157-0AC85-0XA0?
The fieldbus segment operates at 31.25 kbit/s.
What 24 V supply tolerance applies to 6ES7157-0AC85-0XA0?
The permitted supply range is 20.4 to 28.8 V DC.
What is the available device current from 6ES7157-0AC85-0XA0?
The connected field devices can draw a combined maximum of 1 A.
What should be checked before replacing 6ES7157-0AC85-0XA0?
Record the DP address, segment topology, device count, current budget, redundancy arrangement and diagnostic configuration.
What should be tested after installing 6ES7157-0AC85-0XA0?
Verify supply polarity, bus termination, segment voltage, device communication, diagnostics and alarm behavior.
Compatibility & Ordering Notes
Compatibility Checklist
- Calculate the total field-device current and cable load before connecting the segment.
- Confirm the PROFIBUS DP address, 9-pin connector and fieldbus termination arrangement.
- Record topology and diagnostic settings before exchanging the coupler.
