Omron NB3Q-TW_B Startup Manual page 31

1 NB Overview
Serial Port COM2
• NB5Q/NB7W/NB10W-TW
Serial port COM2 is a 9-pin D-type socket port. This port supports RS-232C/RS-485/RS-422A
communication function.
The pins are defined as follows:
USB HOST
NB -TW01B is equipped with USB HOST port, which is USB A-type port. Through this port, USB
memory can be connected to perform uploading, downloading, project operation and storage of related
data. And its pins are defined as follows:
1 2 3 4
Precautions for Safe Use
When connecting the equipment with the USB HOST connector, make sure the supply
equipment's current capacity is below 150mA before using it. The DC+5V voltage output of the
NB Unit is +5V±5%, and the maximum current is 150mA.
USB SLAVE
USB SLAVE port is USB B-type port, which can connect the USB port on PC side to perform the
uploading, downloading and debugging of the programs for the product. And its pins are defined as
follows:
3 2
4 1
1-8
B
Pins Signals I/O
1 SDB+ I/O
2 SD O
3 RD I
4 Terminal R1 -
5 Terminal R2 -
6 RDB+ I/O
7 SDA- I/O
8 RDA- I/O
9 SG -
Pins Signals
1 Vbus
2 D-
3 D+
4 GND
Pins Signals
1 Vbus
2 D-
3 D+
4 GND
NB-series Programmable Terminals Startup Guide Manual(V109)
Functions
RS-232C RS-485
-
Sending data
Receiving data
- Terminal resistor 1
- Terminal resistor 2
- Send/Receive
data(+)
-
- Send/Receive
data(-)
Signal ground
Functions
USB +5V power supply output
(Max. current: 150mA)
Data -
Data +
USB power supply ground
Functions
USB +5V power supply output
Data -
Data +
USB power supply ground
RS-422A
- Sending data(+)
- -
- -
Receiving
data(+)
- Sending data(-)
Receiving
data(-)