SP13 Connector
The SP13 is a circular, IP68-rated waterproof connector by Weipu Connector (SP series), used on many Gateway V4 add-on variants. The device has a socket (female) panel-mounted on the enclosure. Each gateway ships with a matching plug (male) with open cable ends so the customer can wire it to their sensors or terminal. The optional IP68 Inline Cable Connector can be used to join two open-ended cables.
As an alternative, most variants are also available with a PG16 cable gland instead of the SP13 socket — suitable for installations where a fixed cable entry is preferred.
The connector is available in 2-pin, 3-pin, and 4-pin variants depending on the installed add-on.
Pin Assignment by Add-on
The connector type (2/3/4-pin) and the signal on each pin depend on the installed add-on. The tables below list the pin number, wire colour and signal for each variant.
M-Bus (2-pin)
vM-Bus 37 V. Bus load: up to 25 unit loads with external power, 10 unit loads on battery.
| Pin | Colour | Signal |
|---|---|---|
| 1 | Red | M+ |
| 2 | Black | M− |
1-Wire / DS18B20 Temperature (3-pin)
Up to 20 DS18B20 sensors on the 1-Wire bus.
| Pin | Colour | Signal |
|---|---|---|
| 1 | Red | 3V |
| 2 | Green | DQ |
| 3 | Black | GND |
The Temperature (1-Wire) add-on is also available with an RJ45 connector instead of the SP13 — see Gateway V4 + Temperature.
4–20 mA Analog Inputs (3-pin per channel)
Two analogue input channels (CH1, CH2). Each channel provides a 12 VDC sensor supply (≤ 0.5 W).
| Pin | Colour | Signal |
|---|---|---|
| 1 | Red | 12 V Out |
| 2 | Green | L+ |
| 3 | Black | L− (GND) |
Modbus RS-485 — ASCII & RTU (4-pin)
| Pin | Colour | Signal |
|---|---|---|
| 1 | Red | Vout |
| 2 | Black | GND |
| 3 | Green | A |
| 4 | Orange | B |
Compatible Products
The SP13 connector is used on the following Gateway V4 variants:
| Product | Usage |
|---|---|
| Gateway V4 + M-Bus | 1-Wire temperature sensors (DS18B20) |
| Gateway V4 + Modbus | 1-Wire temperature sensors (DS18B20) |
| Gateway V4 + 4-20mA | 4–20 mA input channels and 1-Wire temperature sensors |
Plug (Male, Open Cable Ends)
The plug is included with the gateway and has pre-fitted ferrules (Aderendhülsen) on the open cable ends for easy terminal connection.
Cable length: 220 ± 10 mm total, 30 ± 5 mm stripped ends (all dimensions in mm)
2-Pin Plug
| Pin | Wire colour |
|---|---|
| 1 | Red |
| 2 | Black |
3-Pin Plug
| Pin | Wire colour |
|---|---|
| 1 | Red |
| 2 | Green |
| 3 | Black |
4-Pin Plug
| Pin | Wire colour |
|---|---|
| 1 | Red |
| 2 | Black |
| 3 | Green |
| 4 | Orange |
Socket (Female, Panel Mount)
The socket is the panel-mount receptacle on the device enclosure, pre-wired to the add-on board at the factory. The internal cable length may vary as it is trimmed during production.
2-Pin Socket
| Pin | Wire colour |
|---|---|
| 1 | Red |
| 2 | Black |
3-Pin Socket
| Pin | Wire colour |
|---|---|
| 1 | Red |
| 2 | Green |
| 3 | Black |
4-Pin Socket
| Pin | Wire colour |
|---|---|
| 1 | Red |
| 2 | Black |
| 3 | Green |
| 4 | Orange |
The wiring drawings above are being updated. For the 3-pin cable the wire order is Red (1) · Green (2) · Black (3); some older drawings show green and black swapped. The functional Pin Assignment by Add-on tables are authoritative.
The connector type (2/3/4-pin) depends on the installed add-on module. The plug is included with each gateway — no separate order required.