FIELD GUIDESource-led reference
Port & Cable

E234 · Source-scoped pinout variants

M12 X-coded Ethernet connector engineering reference

X-coded M12 Ethernet family; V40 publishes the eight-position/coding boundary only.

Open field noteSource trail

Source checked · no independent review claimed · Fabrication approved: no

M12 X-coded Ethernet connector engineering boundary original orientation schematic
Original pinout diagram; read the exact variant and view below. Not to scale.

Orientation

How to read this profile

No face-view position locator is published in V40; coding and count do not establish wiring orientation.

Source-scoped identification facts

Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.

Documented examples; not a mating drawing or compatibility approval
Nominal contacts8S238Source-backed nominal position count: 8.
Positions / cavity span8 (Claim C234A); 8 (Claim C234B); 8 (Claim C234C); 8 (Phoenix Contact 1851772 / connection 1); 8 (Phoenix Contact 1851772 / connection 2)S238 · S256 · S501 · S501Source-scoped examples are separate; select the exact variant and measured axis. V39 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof. V40 engineering-reference fact only; independent human review remains pending. This claim does not approve fabrication, rewiring, substitution, electrical safety, protocol support or end-to-end compatibility. V121 named-product or explicitly scoped manufacturer distinction only; no wiring instruction, independent engineering approval or end-to-end compatibility guarantee. Phoenix Contact 1851772 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1851772 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Connector roleStraight M12 cable plug (Phoenix Contact 1851772 / connection 1); Straight M12 cable socket (Phoenix Contact 1851772 / connection 2)S501Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1851772 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1851772 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Contact gender / arrangementmale (Phoenix Contact 1851772 / connection 1); female (Phoenix Contact 1851772 / connection 2)S501Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1851772 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1851772 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Mountingcable (Claim C234D); cable (Phoenix Contact 1851772 / connection 1); cable (Phoenix Contact 1851772 / connection 2)S647 · S649 · S501Source-scoped examples are separate; select the exact variant and measured axis. V178 Exact HARTING connector plus class-level X-coding distinction; no generic performance or mating certification. Original bounded manufacturer paraphrase; publication and technical review pending. Phoenix Contact 1851772 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1851772 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Keying / polarizationX coding (Phoenix Contact 1851772 / connection 1); X coding (Phoenix Contact 1851772 / connection 2)S501Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1851772 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1851772 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Shell / formshielded (Phoenix Contact 1851772 / connection 1); shielded (Phoenix Contact 1851772 / connection 2)S501Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1851772 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1851772 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
ManufacturerPhoenix Contact (Phoenix Contact 1851772 / connection 1); Phoenix Contact (Phoenix Contact 1851772 / connection 2)S501Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1851772 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1851772 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Exact part / implementationPhoenix Contact 1851772 / connection 1 (Phoenix Contact 1851772 / connection 1); Phoenix Contact 1851772 / connection 2 (Phoenix Contact 1851772 / connection 2)S501Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1851772 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1851772 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
View conventionManufacturer caption: pin side (Phoenix Contact 1851772 / connection 1); Manufacturer caption: socket side (Phoenix Contact 1851772 / connection 2)S501Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1851772 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1851772 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.

Not recorded: Populated contacts, Contact rows, Contact pitch, Dimensions / axis, Coupling / latch, Series, Recorded markings. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Recorded variant and source limits
  • Position/contact count and any example-component pitch do not establish a universal pinout, cable construction or protocol capability.
  • No fabrication dimensions or face-view pin locator is published unless explicitly stated.
  • Phoenix Contact 8-contact X-coded Ethernet: Phoenix catalog p.40 female X-coded insert drawing as printed: 1/2 lower left, 3/4 upper left, 5/6 upper right, 7/8 lower right. No male or termination-side mirror is asserted.
  • Phoenix Contact 8-position X-coded Ethernet assignment: Phoenix Contact numbered 8-position X-coded interface; female outline on p. 40 and electrical table on p. 41. No host/cable/rear-view mirroring inferred.
Report a correction to these facts →

Pins & wiring

Pinout

Choose the exact wiring. Pin numbers follow its stated view; a schematic does not establish physical positions. Check your exact device before wiring.

What the status labels mean
Confirmed
Recorded research passes agree within this variant; this is not independent human review or hardware validation.
Single source
Only one underlying document, or one pass, supports this assignment.
Device-specific
Supported for the named equipment or wiring only. Check your device’s manual.
Unverified
Missing or conflicting evidence. Do not wire from this row.
Not connected
The source explicitly says NC, no contact or no pin for this wiring.
Wiring variant

Phoenix Contact 8-contact X-coded Ethernet

View and evidence limits

Phoenix catalog p.40 female X-coded insert drawing as printed: 1/2 lower left, 3/4 upper left, 5/6 upper right, 7/8 lower right. No male or termination-side mirror is asserted.

  • P234 M12 X-coded Ethernet — **Agree**, but **same source** — Both read Phoenix Contact's 2026 data-connector catalog, with the same URL and SHA-256. This is independent transcription, not independent authority. In that table 1/2 are D1 +/-, 3/4 D2 +/-, 5/6 D4 +/-, and **7 D3-, 8 D3+**. Review visually confirmed the table and female insert drawing; the conductor colors and pair numbers must stay attached to that source.
  • No male rear-view geometry, PoE voltage/polarity or supported link rate is inferred.
M12 X-coded Ethernet connector engineering boundaryPhoenix catalog p.40 female X-coded insert drawing as printed: 1/2 lower left, 3/4 upper left, 5/6 upper right, 7/8 lower right. No male or termination-side mirror is asserted.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: D1+ (single_source)12: D1- (single_source)23: D2+ (single_source)34: D2- (single_source)45: D4+ (single_source)56: D4- (single_source)67: D3- (single_source)78: D3+ (single_source)8powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Phoenix Contact 8-contact X-coded Ethernet — source-scoped contact map
PinSignalWhat it doesStatus
1D1+Control, detection or configuration connection; check the source and device.Single source
Sources
2D1-Control, detection or configuration connection; check the source and device.Single source
Sources
3D2+Control, detection or configuration connection; check the source and device.Single source
Sources
4D2-Control, detection or configuration connection; check the source and device.Single source
Sources
5D4+Control, detection or configuration connection; check the source and device.Single source
Sources
6D4-Control, detection or configuration connection; check the source and device.Single source
Sources
7D3-Control, detection or configuration connection; check the source and device.Single source
Sources
8D3+Control, detection or configuration connection; check the source and device.Single source
Sources
Sources (1)
  • S801 · Phoenix Contact · Data connectors — Product overview 2026

    2026 edition; document 52004990; no separate revision observed | MNR 1803315/2026-01-15/14; 3012793056 · p.41, Assignment: Ethernet, 8-pos. X-coded table; p.40 Female, 8-pos., X-coded diagram; p. 41, M12 pin assignments and wire colors, Assignment: Ethernet, 8-pos. X-coded Signal table; female drawing p. 40

Phoenix Contact 8-position X-coded Ethernet assignment

View and evidence limits

Phoenix Contact numbered 8-position X-coded interface; female outline on p. 40 and electrical table on p. 41. No host/cable/rear-view mirroring inferred.

  • P234 M12 X-coded Ethernet — **Agree**, but **same source** — Both read Phoenix Contact's 2026 data-connector catalog, with the same URL and SHA-256. This is independent transcription, not independent authority. In that table 1/2 are D1 +/-, 3/4 D2 +/-, 5/6 D4 +/-, and **7 D3-, 8 D3+**. Review visually confirmed the table and female insert drawing; the conductor colors and pair numbers must stay attached to that source.
  • The catalog labels male/female drawings but does not explicitly state mating side versus termination side in the inspected figure. Only numbered assignments are claimed.
M12 X-coded Ethernet connector engineering boundaryPhoenix Contact numbered 8-position X-coded interface; female outline on p. 40 and electrical table on p. 41. No host/cable/rear-view mirroring inferred.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: D1+ (single_source)12: D1- (single_source)23: D2+ (single_source)34: D2- (single_source)45: D4+ (single_source)56: D4- (single_source)67: D3- (single_source)78: D3+ (single_source)8powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Phoenix Contact 8-position X-coded Ethernet assignment — source-scoped contact map
PinSignalWhat it doesStatus
1D1+Control, detection or configuration connection; check the source and device.Single source
Sources
2D1-Control, detection or configuration connection; check the source and device.Single source
Sources
3D2+Control, detection or configuration connection; check the source and device.Single source
Sources
4D2-Control, detection or configuration connection; check the source and device.Single source
Sources
5D4+Control, detection or configuration connection; check the source and device.Single source
Sources
6D4-Control, detection or configuration connection; check the source and device.Single source
Sources
7D3-Control, detection or configuration connection; check the source and device.Single source
Sources
8D3+Control, detection or configuration connection; check the source and device.Single source
Sources
Sources (1)
  • S801 · Phoenix Contact · Data connectors — Product overview 2026

    2026 edition; document 52004990; no separate revision observed | MNR 1803315/2026-01-15/14; 3012793056 · p. 41, M12 pin assignments and wire colors, Assignment: Ethernet, 8-pos. X-coded Signal table; female drawing p. 40; p.41, Assignment: Ethernet, 8-pos. X-coded table; p.40 Female, 8-pos., X-coded diagram

Unknowns stay unknown.

  • Position/contact count and any example-component pitch do not establish a universal pinout, cable construction or protocol capability.
  • No fabrication dimensions or face-view pin locator is published unless explicitly stated.

Your next step

Use the detail without guessing past its limits.

Read the connector field note Recognition clues and practical checks.Work through a connection Keep exact equipment and cable requirements separate.

Source trail

Claims and sources

C234Bsource checked

Phoenix Contact identifies X-coded M12 Ethernet connectors as an eight-position family in its data-connector material.

Phoenix Contact · M12 Ethernet pin-assignment overview ↗
M12 Ethernet connector overview · Engineering-reference scope only. V40 does not turn this source into fabrication approval, electrical safety approval, protocol guarantee, safe substitution or end-to-end compatibility proof.

C808Hsource checked

Phoenix Contact 8-contact X-coded Ethernet: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Phoenix Contact · Data connectors — Product overview 2026 ↗
p. 41, M12 pin assignments and wire colors, Assignment: Ethernet, 8-pos. X-coded Signal table; female drawing p. 40; p. 44, M8 pin assignments and wire colors, Assignment: PROFINET, 4-pos., D-coded Signal table and D-coded male/female drawings; p.41, Assignment: Ethernet, 8-pos. X-coded table; p.40 Female, 8-pos., X-coded diagram; p.41, Assignment: PROFINET/EtherCAT/Sercos and Assignment: Ethernet, 4-pos. D-coded; p.40 male/female insert diagrams; p.44, Assignment: PROFINET, 4-pos. D-coded table and male/female diagrams · Source scope and unresolved evidence are preserved in the engineering variant.

C808Isource checked

Phoenix Contact 8-position X-coded Ethernet assignment: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Phoenix Contact · Data connectors — Product overview 2026 ↗
p. 41, M12 pin assignments and wire colors, Assignment: Ethernet, 8-pos. X-coded Signal table; female drawing p. 40; p. 44, M8 pin assignments and wire colors, Assignment: PROFINET, 4-pos., D-coded Signal table and D-coded male/female drawings; p.41, Assignment: Ethernet, 8-pos. X-coded table; p.40 Female, 8-pos., X-coded diagram; p.41, Assignment: PROFINET/EtherCAT/Sercos and Assignment: Ethernet, 4-pos. D-coded; p.40 male/female insert diagrams; p.44, Assignment: PROFINET, 4-pos. D-coded table and male/female diagrams · Source scope and unresolved evidence are preserved in the engineering variant.

2 source records support this profile. No independent engineering review or hardware validation is claimed.

Evidence behind this page

Scope first. Source second. Approval separate.

2 linked sources · 3 scoped claims · 0 sources with inspection/access flags.

Page scope: Original V40 engineering boundary schematic; not to scale and not a fabrication, gauging, wiring or mating-face locator drawing.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-03. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 2 source scopes, access limits and dates

S256 · M12 Ethernet pin-assignment overview

Phoenix Contact · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Engineering scope: D-coded M12 is treated as a four-position Ethernet family and X-coded M12 as an eight-position Ethernet family. V40 publishes contact-count and coding boundaries only; no face-view pin locator is inferred.

Not established / limitations: Engineering-reference scope only. V40 does not turn this source into fabrication approval, electrical safety approval, protocol guarantee, safe substitution or end-to-end compatibility proof.

Locator: M12 Ethernet connector overview

S801 · Data connectors — Product overview 2026

Phoenix Contact · Manufacturer / product-owner domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: p. 41, M12 pin assignments and wire colors, Assignment: Ethernet, 8-pos. X-coded Signal table; female drawing p. 40; p. 44, M8 pin assignments and wire colors, Assignment: PROFINET, 4-pos., D-coded Signal table and D-coded male/female drawings; p.41, Assignment: Ethernet, 8-pos. X-coded table; p.40 Female, 8-pos., X-coded diagram; p.41, Assignment: PROFINET/EtherCAT/Sercos and Assignment: Ethernet, 4-pos. D-coded; p.40 male/female insert diagrams; p.44, Assignment: PROFINET, 4-pos. D-coded table and male/female diagrams

Trace 3 claims to their source records

C234B · P234

Phoenix Contact identifies X-coded M12 Ethernet connectors as an eight-position family in its data-connector material.

Claim scope: V40 engineering-reference fact only; independent human review remains pending. This claim does not approve fabrication, rewiring, substitution, electrical safety, protocol support or end-to-end compatibility.

Source links: S256 · Evidence trail → (private workspace)

C808H · P234

Phoenix Contact 8-contact X-coded Ethernet: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S801 · Evidence trail → (private workspace)

C808I · P234

Phoenix Contact 8-position X-coded Ethernet assignment: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S801 · Evidence trail → (private workspace)

Prepare this page for review → (private workspace)Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.