Velleman VM142 - Manual (Page 5)

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
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