These switches control the way in which the SPC-8K expects the data to come from your computer, and will return data to your computer when necessary. You must also make sure your computer’s serial ports match the settings you make on the SPC-8K.

You will need a serial cable in addition to the SPC-8K (see page 71).

Baud rate

You must “tell” the SPC-8K the baud rate of your com- puter’s serial port (how fast it can expect to receive data from your computer).

Use switches 6 through 8 for this purpose. Set them as described in the table below:

Baud rate

Sw 6

I Sw 7

Sw 8

 

I

I

I

150

I OFF

I OFF

I OFF

 

I

I

I

300

OFF

OFF

ON

600

OFF

ON

OFF

1200

OFF

ON

ON

2400

ON

OFF

OFF

4800

ON

OFF

~~̇ON

9600.

ON

ON

OFF

19200

ON

ON

ON

Number of bits in a word

Set switch 1 to ON for 8 data bits in a serial word (this will be the most commonly-used setting). Set Switch 1to OFF for 7-bit use.

Parity

A “parity bit” can be added to each word to make the total value of bits to be odd or even. This allows for error checking of the data as it is transmitted over the serial line. Use switches 2 and 5 to set this.

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Star Micronics LC24-300 user manual Baud rate