Siemens 6ES7157-0AF81-0XA0 SIMATIC DP AFD Active Field Distributor

Siemens 6ES7157-0AF81-0XA0 PROFIBUS PA Ring Active Field Distributor

Inquiry now

SIMATIC DP Active Field Distributor

6ES7157-0AF81-0XA0

AFD Active Field Distributor for PROFIBUS PA

AFD Version 02

PROFIBUS PA field distribution with IP65 housing

Product Overview

The Siemens 6ES7157-0AF81-0XA0 is an AFD active field distributor used on PROFIBUS PA and FOUNDATION Fieldbus installations. Siemens documentation identifies it as product version 02 and includes it in redundant ring configurations with FDC 157-0 DP/PA couplers.

Official product information specifies IP65 protection and screw-type terminals for product version 02. Siemens later describes AFD4 6ES7157-0AG81-0XA0 as functionally compatible with this earlier AFD, while warning that the replacement has larger dimensions.

Product Snapshot
Manufacturer	Siemens
Product family	SIMATIC DP Active Field Distributor
Complete part number	6ES7157-0AF81-0XA0
Accurate product type	AFD Active Field Distributor for PROFIBUS PA

Commercial Status

Commercial Status
Official lifecycle	Not entered — exact official lifecycle wording was not confirmed
Effective date	Not entered
Official successor	AFD4 6ES7157-0AG81-0XA0 is officially described as functionally compatible; dimensions differ
Procurement note	Verify product version, terminal design, environmental rating and replacement dimensions against Siemens documentation.

Verified Technical Data

Technical Data
Device class	Active field distributor AFD, product version 02
Supported fieldbus use	PROFIBUS PA and FOUNDATION Fieldbus installations
Topology role	Field distribution component used in PA/FF segments
Redundancy application	Documented for PROFIBUS PA ring-redundancy configurations
Enclosure protection	IP65 for product version 02
Terminal technology	Screw-type terminal block
System pairing	Used with FDC 157-0 DP/PA couplers in documented ring systems
Replacement reference	AFD4 6ES7157-0AG81-0XA0 is officially stated as functionally compatible
Replacement constraint	AFD4 has larger dimensions; mechanical fit must be checked
Documentation basis	Siemens DP/PA coupler and active field distributor operating instructions

System Fit and Applications

PROFIBUS PA field distribution

Distribute PA trunk communication to field-device connections in process automation installations.

Redundant PA ring architectures

Use as an active distributor within Siemens documented FDC 157-0 ring-redundancy designs.

Installed-base maintenance

Replace or service an existing AFD only after confirming product version, terminals, enclosure and available mounting space.

Compatibility and Procurement Checks

Exact designation

Confirm 6ES7157-0AF81-0XA0 and product version 02 on the label before sourcing.

Fieldbus architecture

Check whether the installed network is PROFIBUS PA or FOUNDATION Fieldbus and whether ring redundancy is configured.

Mechanical installation

Verify IP65 enclosure condition, screw-terminal wiring and mounting dimensions.

Replacement review

AFD4 6ES7157-0AG81-0XA0 is functionally compatible according to Siemens, but its larger dimensions require a fit check.

Lifecycle Note

An exact Siemens lifecycle label for 6ES7157-0AF81-0XA0 was not confirmed in the accessible official sources, so no Active, Phase Out, Discontinued or Obsolete status is assigned here. Siemens documentation identifies it as an earlier AFD model and names AFD4 6ES7157-0AG81-0XA0 as functionally compatible with different dimensions.

Frequently Asked Questions

What is 6ES7157-0AF81-0XA0?

It is a Siemens SIMATIC DP active field distributor, product version 02, for PA/FF fieldbus installations.

What enclosure and terminal design does version 02 use?

Siemens product information specifies IP65 protection and screw-type terminal technology.

Can it be used in a redundant PROFIBUS PA ring?

Yes, Siemens ring-redundancy documentation lists this AFD in systems using a pair of FDC 157-0 couplers.

Is 6ES7157-0AG81-0XA0 a direct mechanical replacement?

Siemens describes the AFD4 as functionally compatible, but explicitly warns that it has larger dimensions.

What should be verified before ordering?

Confirm the exact article number, product version, fieldbus topology, terminal condition, enclosure rating and available mounting space.

Request a Verified Quote for 6ES7157-0AF81-0XA0

Send the full article number, required quantity, destination and system context for stock, compatibility and warranty review.

Contact Stockoems for Availability

Service Support for 6ES7157-0AF81-0XA0

Documentation review, sourcing coordination and delivery support for industrial automation procurement.

Verification	Supply Coordination	After-Sales Support
Article number, condition, revision and visible identification are checked against order requirements.	Availability, packing, freight route and dispatch documents are coordinated before shipment.	Warranty terms, arrival inspection records and issue escalation are documented for the supplied unit.

Need Service Support for 6ES7157-0AF81-0XA0?

Share the full part number and application details so our team can prepare the correct service scope.

Recommended Industrial Automation Models

Reference models for broader sourcing discussions around 6ES7157-0AF81-0XA0. These are not direct replacements; verify system, electrical and lifecycle requirements independently.

No.	Model	Brand	Reference area
01	6ES7315-2AH14-0AB0	Siemens	PLC and process control
02	1756-L83E	Allen-Bradley	PLC and process control
03	3BSE018161R1	ABB	PLC and process control
04	CC-PAIH01	Honeywell	PLC and process control
05	KJ3001X1-BA1	Emerson	PLC and process control
06	AAI141-S00	Yokogawa	PLC and process control
07	3500/15	Bently Nevada	PLC and process control
08	BMXP342020	Schneider Electric	PLC and process control
09	KFD2-STC4-Ex1	Pepperl+Fuchs	PLC and process control
10	IB IL 24 DI 16	Phoenix Contact	PLC and process control
11	CX5130-0125	Beckhoff	PLC and process control
12	IC695CPE310	GE	PLC and process control
13	F8650X	HIMA	PLC and process control
14	FBM201	Foxboro	PLC and process control
15	6ES7134-6GF00-0AA1	Siemens	Industrial I/O
16	1756-IB16	Allen-Bradley	Industrial I/O
17	3BSE020514R1	ABB	Industrial I/O
18	CC-PAOX01	Honeywell	Industrial I/O
19	KJ3222X1-BA1	Emerson	Industrial I/O
20	AAI543-S00	Yokogawa	Industrial I/O
21	3500/22M	Bently Nevada	Industrial I/O
22	BMXDDI1602	Schneider Electric	Industrial I/O
23	KFD2-SR2-Ex2.W	Pepperl+Fuchs	Industrial I/O
24	IB IL 24 DO 16	Phoenix Contact	Industrial I/O
25	EL1008	Beckhoff	Industrial I/O
26	IC695ETM001	GE	Industrial I/O
27	F6217	HIMA	Industrial I/O
28	FBM207	Foxboro	Industrial I/O
29	6GK5208-0BA10-2AA3	Siemens	Industrial communication
30	1756-EN2T	Allen-Bradley	Industrial communication
31	3BSE013252R1	ABB	Industrial communication
32	CC-PDIL01	Honeywell	Industrial communication
33	VE4003S2B1	Emerson	Industrial communication
34	ADV151-P00	Yokogawa	Industrial communication
35	3500/32M	Bently Nevada	Industrial communication
36	BMXDDO1602	Schneider Electric	Industrial communication
37	KCD2-SCD-Ex1	Pepperl+Fuchs	Industrial communication
38	FL SWITCH 1008N	Phoenix Contact	Industrial communication
39	EL2008	Beckhoff	Industrial communication
40	IC694MDL645	GE	Industrial communication
41	F3330	HIMA	Industrial communication
42	FBM217	Foxboro	Industrial communication
43	6AV2124-0MC01-0AX0	Siemens	Operator interface
44	1794-AENTR	Allen-Bradley	Operator interface
45	3BSE041882R1	ABB	Operator interface
46	CC-PCNT01	Honeywell	Operator interface
47	KJ2003X1-BB1	Emerson	Operator interface
48	AFV10D-S41201	Yokogawa	Operator interface
49	3500/42M	Bently Nevada	Operator interface
50	140CPU67160	Schneider Electric	Operator interface
51	NJ2-V3-N	Pepperl+Fuchs	Operator interface
52	QUINT4-PS/1AC/24DC/10	Phoenix Contact	Operator interface
53	EL3064	Beckhoff	Operator interface
54	IS220PAICH1A	GE	Operator interface
55	X-CPU 01	HIMA	Operator interface
56	P0926JM	Foxboro	Operator interface
57	6SL3210-1KE21-7UF1	Siemens	Power and condition monitoring
58	2711P-T10C22D9P	Allen-Bradley	Power and condition monitoring
59	3BSE008538R1	ABB	Power and condition monitoring
60	51304540-100	Honeywell	Power and condition monitoring
61	A6110	Emerson	Power and condition monitoring
62	VI451-10	Yokogawa	Power and condition monitoring
63	3300 XL 8 mm	Bently Nevada	Power and condition monitoring
64	HMIGTO6310	Schneider Electric	Power and condition monitoring
65	NBB5-18GM50-E2	Pepperl+Fuchs	Power and condition monitoring
66	RAD-2400-IFS	Phoenix Contact	Power and condition monitoring
67	EK1100	Beckhoff	Power and condition monitoring
68	IC200ALG264	GE	Power and condition monitoring
69	X-DI 32 01	HIMA	Power and condition monitoring
70	CP40B	Foxboro	Power and condition monitoring