Serial Port Information - Transcell Technology PC-150 Setup & Operation Manual

Digital bench scale

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Operation manual (15 pages)

Service manual (26 pages)

Table Of Contents

Table of Contents

The rear panel of the PC-150 contains two serial ports:

•

RS-232C

•

USB 2.0, full speed, peripheral

The RS-232C port is a full duplex (bi-directional) communication port realized by a 9-pin DSUB

"female" connector. Its pin-out is as follows:

Pin No.

Transcell's off-the-shelf cable solution for connection to a PC style COM port is our optional

NMC-1 Null Modem Cable. If you prefer to fabricate your own cable instead, use the cable dia-

gram shown below:

Not many computers these days come with a COM port. USB has replaced the serial COM port

on most computers. The USB solution on our PC-150 uses a special driver on your PC to pro-

duce what's called a Virtual COM Port or VCP. This allows many legacy applications to work

seamlessly with our scale because to them, it's just another COM port. A standard USB cable

(Standard Type A to Standard Type B) will work or one can be purchased from Transcell (Model

USB-1).

The SPS-70DL USB drivers are compatible with our PC-150. You can download the SPS-70DL

USB drivers in the Downloads section of our website

If you are experiencing communication problems, please note the following:

Cabling – This must be 100% correct (see diagrams above)

Baud Rates, Date Bits, Parity – These parameters must match 100% on both devices

Select the proper COM port on your computer or serial device – sometimes other applications will

automatically grab the first available COM port

Handshaking – Select 'None' on your application

For more detailed troubleshooting, please refer to the PC-150 Service Manual, or contact Tran-

scell Technology Technical support at 1-847-419-9180.