User's Manual

i-PORT M350
Page 25 of 30
4.2.5 The i-BUS Connector
Please note
• The i-BUS uses RS422 levels on its RX and TX Pins, although Ethernet jack/plugs mechanically
fit, the device is not Ethernet compatible.
• Industry standard cat 5 straight patch cables can be used to daisy chain the devices
To Master RJ 45 connector to the Host computer or the Slave port of the previous i-PORT MB in
the Daisy Chain.
To Slave RJ 45 connector to the Master port of the next i-PORT MB in the Daisy Chain. Leave
this connector open at the last device in the chain.
View into the connector = crimp/solder side of plug
Pin To Master To Slave T568B color Description
1 RxD+ TxD+ White/orange
2 RxD– TxD– Orange
3 TxD+ RxD+ White/Green
4 V+ (10 … 30V) V+ (10 … 30V) Blue Power supply over bus
5 V+ (10 … 30V) V+ (10 … 30V) White/Blue Power supply over bus
6 TxD– RxD– Green
7 GND GND White/Brown Power supply over bus
8 GND GND Brown Power supply over bus
As the TxD/RxD crossing is done by the pinout of the connectors, simple straight cabling has to be
used.
Connection parameters
Signal levels: RS422
Baud rate: 115200 bits per second
Data bits: 8
Stop bits: 1
Parity: none
Mode: half duplex