Velleman VM142 Manual de usuario descargar pdf (Pagina 5)

Descriptions of the terminal block

Out1,Out2,Out3,Out4:

These are the four open-collector type outputs and can each handle a current of max. 100mA.

These transistors are grouped in a transistor array chip, IC2. In case of damage of one of the four inputs or

outputs, this IC type ULN2803A can be replaced easily and without soldering.

I/O of the PIC16F630: PORT C

OUTPUT1 I/O 5

OUTPUT2 I/O 4

OUTPUT3 I/O 3

OUTPUT4 I/O 2

Programming example:

BSF PORTC,OUTPUT1 ;activate output 1

BCF PORTC,OUTPUT2 ;deactivate output 2

N.O. - COM - N.C.

Output 5 is voltage-free relay contact with double operation. COM is the common contact, NO is the normally

open contact, NC is the normally closed contact

Programming example :

BSF PORTC,RELAY ;activate the relay.

BCF PORTC,RELAY ;deactivate the relay