E251 · Source-scoped pinout variants

M12 A-coded 5-position connector engineering reference

Phoenix Contact manufacturer overview provides male/female face-view numbering for the five-position M12 A-coded form.

Open field note Source trail

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

M12 A-coded 5-position contact-designation reference original orientation schematic — Original pinout diagram; read the exact variant and view below. Not to scale.

Contact count

5

M12 A-coded signal connector

Mating boundary

Shape is not the verdict.

M12 A-coded male connector ↔ compatible M12 A-coded female connector

Orientation

How to read this profile

Contact labels 1–5 follow the documented male/female face-view numbering; V44 does not assign a universal A-coded signal map.

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 contacts	5S271Source-backed nominal position/contact count: 5.
Positions / cavity span	5 (Claim C251A); 5 (Claim C251B); 5 (Claim C251C); 5 (Claim C251D); 5 (Phoenix Contact 1836717 / connection 1); 5 (Phoenix Contact 1836717 / connection 2)S271 · S289 · S503 · S647 · S503Source-scoped examples are separate; select the exact variant and measured axis. V43 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof. V44 contact-designation/orientation reference only; no universal signal assignment, wire color, voltage/current rating or device compatibility is inferred. V121 named-product or explicitly scoped manufacturer distinction only; no wiring instruction, independent engineering approval or end-to-end compatibility guarantee. V178 Coding-class and application distinction only; electrical and mechanical mating of actual parts unverified. Original bounded manufacturer paraphrase; publication and technical review pending. Phoenix Contact 1836717 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1836717 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Connector role	Straight M12 cable plug (Phoenix Contact 1836717 / connection 1); Straight M12 cable socket (Phoenix Contact 1836717 / connection 2)S503Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1836717 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1836717 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Contact gender / arrangement	male (Phoenix Contact 1836717 / connection 1); female (Phoenix Contact 1836717 / connection 2)S503Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1836717 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1836717 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Mounting	cable (Phoenix Contact 1836717 / connection 1); cable (Phoenix Contact 1836717 / connection 2)S503Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1836717 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1836717 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Keying / polarization	A coding (Phoenix Contact 1836717 / connection 1); A coding (Phoenix Contact 1836717 / connection 2)S503Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1836717 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1836717 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Manufacturer	Phoenix Contact (Phoenix Contact 1836717 / connection 1); Phoenix Contact (Phoenix Contact 1836717 / connection 2)S503Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1836717 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1836717 / connection 2. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Exact part / implementation	Phoenix Contact 1836717 / connection 1 (Phoenix Contact 1836717 / connection 1); Phoenix Contact 1836717 / connection 2 (Phoenix Contact 1836717 / connection 2)S503Source-scoped examples are separate; select the exact variant and measured axis. Phoenix Contact 1836717 / connection 1. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. Phoenix Contact 1836717 / 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, Shell / form, Series, Recorded markings, View convention. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Recorded variant and source limits

A-coding and contact numbering do not establish a universal sensor/actuator protocol, wire color or electrical rating.
No fabrication dimensions or mating tolerances are published in this profile.
ifm RM907S CAN-in: p.5 CAN-in as drawn:2 upper left,1 upper right,3 lower left,4 lower right,5 center.
ifm RM907S CAN-out: p.5 CAN-out as drawn:1 upper left,2 upper right,4 lower left,3 lower right,5 center.
Balluff BNI EIP-508-005-Z015-013 ports 0–7, female M12 A-coded: Numbered contacts of Balluff’s female I/O/IO-Link equipment ports 0–7. The contact map is device-specific; no rear-side view 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.

Dark pinout view

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 variantifm RM907S CAN-in

ifm RM907S CAN-in

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

p.5 CAN-in as drawn:2 upper left,1 upper right,3 lower left,4 lower right,5 center.

P251 M12 A-coded 5-position — **Partial**: different applications — A's ifm RM907S CAN-in/out uses 1 screen, 2 supply, 3 ground, 4 CAN_H, 5 CAN_L. B's Balluff I/O ports use 1 +24 V, 2 I/O, 3 ground, 4 I/O/IO-Link, 5 NC. These are deliberately separate CAN and sensor/I/O variants; there is no family-wide pinout to reconcile.
Other sensor/actuator, IO-Link, DeviceNet or proprietary five-position wiring is not established.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

ifm RM907S CAN-in — source-scoped contact map
Pin	Signal	What it does	Status
1	CAN Screen	Cable screen or shield connection; check the named equipment.	Device-specific Sources
2	VBB	Control, detection or configuration connection; check the source and device.	Device-specific Sources
3	GND	Ground reference and return.	Device-specific Sources
4	CAN_H	Control, detection or configuration connection; check the source and device.	Device-specific Sources
5	CAN_L	Control, detection or configuration connection; check the source and device.	Device-specific Sources

Sources (1)

S811 · ifm electronic · RM907S Absolute multiturn encoder with hollow shaft — RMO12BRU51213bCANSP
RM907S EN-GB, 07.07.2026 (retrieved PDF footer; filename -03) · PDF p.5, Electrical connection - CAN-in, M12 A coding/5 contacts, numbered signal list

ifm RM907S CAN-out

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

p.5 CAN-out as drawn:1 upper left,2 upper right,4 lower left,3 lower right,5 center.

P251 M12 A-coded 5-position — **Partial**: different applications — A's ifm RM907S CAN-in/out uses 1 screen, 2 supply, 3 ground, 4 CAN_H, 5 CAN_L. B's Balluff I/O ports use 1 +24 V, 2 I/O, 3 ground, 4 I/O/IO-Link, 5 NC. These are deliberately separate CAN and sensor/I/O variants; there is no family-wide pinout to reconcile.
Other sensor/actuator, IO-Link, DeviceNet or proprietary five-position wiring is not established.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

ifm RM907S CAN-out — source-scoped contact map
Pin	Signal	What it does	Status
1	CAN Screen	Cable screen or shield connection; check the named equipment.	Device-specific Sources
2	VBB	Control, detection or configuration connection; check the source and device.	Device-specific Sources
3	GND	Ground reference and return.	Device-specific Sources
4	CAN_H	Control, detection or configuration connection; check the source and device.	Device-specific Sources
5	CAN_L	Control, detection or configuration connection; check the source and device.	Device-specific Sources

Sources (1)

S811 · ifm electronic · RM907S Absolute multiturn encoder with hollow shaft — RMO12BRU51213bCANSP
RM907S EN-GB, 07.07.2026 (retrieved PDF footer; filename -03) · PDF p.5, Electrical connection - CAN-out, M12 A coding/5 contacts, numbered signal list

Balluff BNI EIP-508-005-Z015-013 ports 0–7, female M12 A-coded

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

Numbered contacts of Balluff’s female I/O/IO-Link equipment ports 0–7. The contact map is device-specific; no rear-side view inferred.

P251 M12 A-coded 5-position — **Partial**: different applications — A's ifm RM907S CAN-in/out uses 1 screen, 2 supply, 3 ground, 4 CAN_H, 5 CAN_L. B's Balluff I/O ports use 1 +24 V, 2 I/O, 3 ground, 4 I/O/IO-Link, 5 NC. These are deliberately separate CAN and sensor/I/O variants; there is no family-wide pinout to reconcile.
CANopen, DeviceNet, other sensor wiring and IO-Link Class B auxiliary-power assignments are not interchangeable with this Balluff port and are not generalized from it.
The page labels the female connector but does not explicitly call the numbered figure a mating-face or termination-side view.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

Balluff BNI EIP-508-005-Z015-013 ports 0–7, female M12 A-coded — source-scoped contact map
Pin	Signal	What it does	Status
1	+24 V, 1.6 A	Power connection (+24 V, 1.6 A). Check the specified supply.	Device-specific Sources
2	Input / output	Control, detection or configuration connection; check the source and device.	Device-specific Sources
3	GND	Ground reference and return.	Device-specific Sources
4	Input / output / IO-Link	Control, detection or configuration connection; check the source and device.	Device-specific Sources
5	n.c.	Not connected or absent in this named wiring.	Not connected Sources

Sources (1)

S802 · Balluff · BNI EIP-508-005-Z015-013 EtherNet/IP IP67 modules User’s Guide
955066_AC • EN • L22 · Printed p. 7 (PDF p. 8), §3 First Steps, Port — M12, A-coded, female pin table and ports 0–7 applicability table

Unknowns stay unknown.

A-coding and contact numbering do not establish a universal sensor/actuator protocol, wire color or electrical rating.
No fabrication dimensions or mating tolerances are published in this profile.

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

C251Asource checked

Phoenix Contact identifies part 1836717 as a five-position sensor/actuator cable using A-coded M12 connectors.

Phoenix Contact · M12 A-coded 5-position sensor/actuator cable ↗
Product properties · Identification/reference scope only. V43 does not convert this source into a universal pinout, fabrication drawing, electrical approval, protocol guarantee or end-to-end compatibility verdict.

C251Bsource checked

Phoenix Contact’s 2026 circular-connector overview shows five-position M12 A-coded male and female face views with contact positions designated 1 through 5.

Phoenix Contact · M5 to M12 circular connectors — pin assignments and wire colors ↗
Product overview 2026, pages 70–71: M8/M12 male/female face views and data assignments · Face-view numbering/coding applies only to the documented connector forms. V44 does not infer wire colors, protocol support or electrical ratings for arbitrary products unless explicitly claimed.

C808Usource checked

ifm RM907S CAN-in: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

ifm electronic · RM907S Absolute multiturn encoder with hollow shaft — RMO12BRU51213bCANSP ↗
PDF p.5, Electrical connection - CAN-in, M12 A coding/5 contacts, numbered signal list; PDF p.5, Electrical connection - CAN-out, M12 A coding/5 contacts, numbered signal list · Source scope and unresolved evidence are preserved in the engineering variant.

C808Vsource checked

ifm RM907S CAN-out: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

C808Wsource checked

Balluff BNI EIP-508-005-Z015-013 ports 0–7, female M12 A-coded: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Balluff · BNI EIP-508-005-Z015-013 EtherNet/IP IP67 modules User’s Guide ↗
Printed p. 6 (PDF p. 7), §3.3 Electrical Connection, Ethernet IP Interface — M12, D-coded, female pin table; Printed p. 7 (PDF p. 8), §3 First Steps, Port — M12, A-coded, female pin table and ports 0–7 applicability table · Source scope and unresolved evidence are preserved in the engineering variant.

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

Evidence behind this page

Scope first. Source second. Approval separate.

4 linked sources · 5 scoped claims · 0 sources with inspection/access flags.

Page scope: Original V44 contact-designation schematic; not to scale and not a fabrication or wiring drawing.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-04. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 4 source scopes, access limits and dates

S271 · M12 A-coded 5-position sensor/actuator cable

Phoenix Contact · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Identifies five-position M12 plug/socket connectors with A-coding in a sensor/actuator cable.

Not established / limitations: Identification/reference scope only. V43 does not convert this source into a universal pinout, fabrication drawing, electrical approval, protocol guarantee or end-to-end compatibility verdict.

Locator: Product properties

S289 · M5 to M12 circular connectors — pin assignments and wire colors

Phoenix Contact · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Primary manufacturer overview used for bounded M8 A-coded, M8 D-coded, M12 A-coded and M12 B-coded position numbering; the M8 D-coded PROFINET assignment is also stated explicitly.

Not established / limitations: Face-view numbering/coding applies only to the documented connector forms. V44 does not infer wire colors, protocol support or electrical ratings for arbitrary products unless explicitly claimed.

Locator: Product overview 2026, pages 70–71: M8/M12 male/female face views and data assignments

S802 · BNI EIP-508-005-Z015-013 EtherNet/IP IP67 modules User’s Guide

Balluff · Unclassified publisher 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: Printed p. 6 (PDF p. 7), §3.3 Electrical Connection, Ethernet IP Interface — M12, D-coded, female pin table; Printed p. 7 (PDF p. 8), §3 First Steps, Port — M12, A-coded, female pin table and ports 0–7 applicability table

S811 · RM907S Absolute multiturn encoder with hollow shaft — RMO12BRU51213bCANSP

ifm electronic · Unclassified publisher 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: PDF p.5, Electrical connection - CAN-in, M12 A coding/5 contacts, numbered signal list; PDF p.5, Electrical connection - CAN-out, M12 A coding/5 contacts, numbered signal list

Trace 5 claims to their source records

C251A · P251

Phoenix Contact identifies part 1836717 as a five-position sensor/actuator cable using A-coded M12 connectors.

Claim scope: V43 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof.

Source links: S271 · Evidence trail → (private workspace)

C251B · P251

Phoenix Contact’s 2026 circular-connector overview shows five-position M12 A-coded male and female face views with contact positions designated 1 through 5.

Claim scope: V44 contact-designation/orientation reference only; no universal signal assignment, wire color, voltage/current rating or device compatibility is inferred.

Source links: S289 · Evidence trail → (private workspace)

C808U · P251

ifm RM907S CAN-in: 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: S811 · Evidence trail → (private workspace)

C808V · P251

ifm RM907S CAN-out: 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: S811 · Evidence trail → (private workspace)

C808W · P251

Balluff BNI EIP-508-005-Z015-013 ports 0–7, female M12 A-coded: 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: S802 · Evidence trail → (private workspace)

Prepare this page for review →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.