RJ45 and RJ11 pinouts for data buses and connections
for ad-hoc wiring when standard can be chosen:
RJ12 is preferred for being smaller, using standard old thinner flatter telephone cables
RJ45 is preferred for abundance of Ethernet cables and couplers on hand
RJ45 buses
RS232: DTE: Rx=receive, Tx=transmit; DCE: Rx=transmit,Tx=receive
RS232: pinouts often symmetric, out on one side in on other, so crossed ("rolled") cable can be made just by flipping the connector.
Cisco X1=Cisco Straight, Cisco X2=Cisco Rolled (mirrored), Cisco X0=legacy
RJ45 pins: 1/orwh 2/orng 3/grwh 4/blue 5/blwh 6/gren 7/brwh 8/brwn
Ethernet
!! Ethernet 100Mb Tx+ Tx- Rx+ (PoE+) (PoE+) Rx- (PoE-) (PoE-)
RS232
RS232 DCE Tx Rx CTS +5V_out RTS GND
RS232 EIA561 DTE RI/DSR DCD DTR GND Rx Tx CTS RTS [ref]
RS232 Fortigate Tx? GND Rx?
RS232 Sun/CiscoX0 RTS DSR DCD Rx Tx GND DTR CTS [ref]
! RS232 Mkrtik/CiscoX1 RTS DTR Tx GND GND Rx DSR CTS [ref]
! RS232 Yost/CiscoX2 CTS DCD Rx GND GND Tx DTR RTS [ref]
RS232 Huawei CTS DSR Rx GND GND Tx DTR RTS
RS232 DTE,CMM RTS Tx Rx GND CTS GND [ref]
RS232 RTS DTR GND Tx Rx DCD DSR CTS [ref]
SolisInverters Tx Rx [ref]
RS485, RS422
RS422 Tx+ Tx- Rx- Rx+ [ref]
RS485-fullduplex Tx+ Tx- Rx- Rx+ [ref]
RS485-halfduplex A/+ B/- [ref]
RS485-2wire,CMM A/+ B/- termin1 GND GND [ref]
RS485-4wire,CMM Tx+ Tx- Rx+ GND Rx- termin2 GND [ref]
RS485-fullduplex GND Rx- Tx+ Rx+ Tx- [ref]
RS485-4wire Rx- Rx+ Tx+ GND Tx- shield [ref]
RS485-fullduplex Rx- Rx+ Tx+ Tx- GND [ref]
RS485/MODBUS Rx1 Rx0 Tx1 Tx0 COM [ref] Proface PMM 400 / PMM 500
RS485-2w-power GND GND Tx- Tx+ +12V +12V [ref]
RS485-MODBUS A/+ B/- GND [ref]
! RS485/MODBUS D1 D0 COM
SolisInverters A/+ B/- [ref]
Growatt SPH (RS485B) GND (RS485B)(RS485A) (RS485A)(RS485B) [ref]
HubbleLithium 1 B A GND B A GND [ref] B-B and A-A connected together
HubbleLithium 2 B A GND GND A B [ref] B-B and A-A connected together
CAN
Optidrive CAN_L CAN_H GND Optibus- Optibus+ +24V 485Rx- 485Rx+ [ref]
! CAN2.0 CAN_H CAN_L CANGND (power)
CAN2.0 CAN_H CAN_L CANGND (shield) (GND) (power) [ref]
CAN2.0,ATV31 CAN_H CAN_L CANGND ModbD1 ModbD0 VP GND [ref] D1,D0=RS485 MODBUS signals; also CANopen VW3CANTAP2[ref]
SolisInverters GND CANH CANL [ref]
BYD batteries RS485A RS485B CANH CANL [ref]
PylonTech n.c. n.c. n.c. CANH CANL CANGND RS485A RS485B [ref]
Growatt SPH CANH CANL CANGND wakeup [ref]
HubbleLithium CANL GND CANH CANL GND CANH [ref] B-B and A-A connected together
Zhongling motors CANH CANL GND [ref]
1-wire
! 1-wire 1wire.org GND_5V +5V auxGND 1w-data 1w-GND (aux) +12V GND_12V
1-wire SimonAtk +5V +5V +DC 1w-data GND +DC GND GND [ref]
1-wire AAG RJ45 1w-data GND +5V +12V +12V +5V GND GND [ref]
UART
UART LeixenProg Tx Rx GND [ref]
Wouxun KG-UV90P speakr 5v-on-rx PTT ? ? +8V GND mic [ref]
USB
USB Taotronic barc. +5V GND D- D+ [ref]
USB PS3 GND D- D+ +5V [ref]
MIDI/DMX
XLR connectors: 1=GND, 2=DATA-, 3=DATA+ (on 5pin, 4=5=nc or 4=data2-, 5=data2+); unidirectional RS485 [ref]
! DMX, ESTA data+ data- GND GND [ref]
! DMX, ESTA,2ch data1+ data1- data2+ data2- GND1 GND2 [ref]
DMX, IT-SP8R data+ data- GND GND GND [ref]
DMX, Renard SS J2 GND GND data- data+ [ref][ref]
DMX, Color Kinetics data- data+ GND (GND) [ref]
LOR/Light-O-Rama data+ data- GND [ref]
MIDI
usually 5pin DIN (14253 order); 1=nc, 2=shield, 3=nc, 4=+5v, 5=data (or 4=data+, 5=data-, for optocouplers); 31250 bps serial; dedicated ports for direction - MIDI IN, MIDI OUT, MIDI THRU (in directly to thru)
MIDI, Variax GND +7V Tx+ AES- AES+ Tx- Rx+ Rx- [ref]
audio balanced L+/AES+ L-/AES- R+ GND R- (-15V) (+15V) [ref]
audio unbalanced Left GND Right GND [ref]
audio Flex3000 +5V MicGND Mic+ PTT+ PTT- [ref]
ISDN telephone
telephone T1/ISDN RxRing RxTip TxRing TxTip [ref]
RJ11/12 buses
RS232 9pin: DCE=female, DTE=male; DTE pins: 1=DCD, 2=Rx, 3=Tx, 4=DTR, 5=GND, 6=DSR, 7=RTS, 8=CTS, 9=RI
RJ12 RJ12 RJ12 RJ12 RJ12 RJ12 (6p6c)
RJ11 RJ11 (6p2c)
RJ11/12 pins: 1/xxxx 2/xxxx 3/xxxx 4/xxxx 5/xxxx 6/xxxx
telephone, RJ11 R- T+ [ref]
telephone, RJ14 T2+ R1- T1+ R2- [ref]
telephone, RJ25 T3+ T2+ R1- T1+ R2- R3- [ref]
RS232 GND Rx Tx [ref]
RS232 GND Rx Tx [ref]
RS232 Tx Rx GND GND [ref]
RS232 CTS Rx GND GND Tx RTS [ref]
RS232 APC UPS 9600,8n1 GND Tx Rx GND [ref]
RS232/Unitronics,PLC-side (DSR) GND Rx Tx GND (DTR) [ref]
RS232/Unitronics,PC-side (DTR) GND Tx Rx GND (DSR) [ref]
RS485/Unitronics A+ B- [ref]
RS232 Proface Tx GND Rx [ref]
RS232 Autostar Rx Tx GND [ref]
RS232 Dell/Powerfault GND Tx Rx RTS CTS [ref]
RS232 H2Ns RTS Tx GND GND Rx DCD [ref]
RS422 H2Ns RTS Tx+ Tx- Rx- Rx+ DCD [ref]
Synscan Handcontroller Rx GND Tx [ref]
RS232 servo/stepper (+5V) Tx GND Rx [ref]
1-wire Dallas 1w-data GND [ref]
1-wire AAG RJ11 GND 1w-data GND +5V [ref]
1-wire Dallas std +5V GND 1w-data GND +DC [ref]
1-wire Midon Dsgn +DC +5V 1w-data GND [ref]
1-wire AAG RJ12 +5V GND 1w-data GND [ref]
1-wire TexasInstr GND 1w-data GND +DC [ref]
Digitrax Loconet RailSyncB GND +14.5V +14.5V GND RailSyncA [ref]
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