Rs232 Wire Connection; Power Connection; Rechargeable Battery; Charging The Battery - T Scale TW20 Series Operation Manual

TW20_NS20_EW20 Series Weighing Indicator Operation Manual

3.4 RS232 wire connection

Pin 2
Pin 3
Pin 5
9pin Connector:
Note: if data is not getting, interchange one of the connector Pin 2 & Pin 3 connections.

3.5 Power Connection

Connect the adaptor pin in to the indicator adaptor jack.

 Adaptor jack is locating back side of the indicator.
Adaptor connects into your AC power socket. Plugable equipment must be installed near an easily

accessible socket outlet with a protective ground/ earth contact.

3.6 Rechargeable battery

Note: Please charge the battery before using the scale for the first time.
The low voltage battery symbol on the weight display indicates that the battery is getting low. It's time to

charge the battery with the AC power. If scale goes on being used without proper charging, <BAT-LOW>
words will flicker on the display.
Approximately 30 minutes of instrument usage are left; afterwards it will shut off automatically.

Please use the supplied battery charger for charging the battery immediately,or scale cannot be used.


3.6.1 Charging the battery

Before the first use, the battery should be charged by connecting it to the mains power supply for at least

5 hours.
When the scale is plugged into the mains power the internal

battery will be recharged.
Verify that the AC power socket outlet is properly protected.

There is an battery symbol at the upper side of display to indicate the status of battery charging.

RXD Input
TXD Output
GND ―
DB 9 Male to Scale
AC adapter jack
Receiving data
Transmission data
Signal ground
DB 9 Female to PC
- 11 -
REV:01
Fully charged
Low voltage
Charging