Omega Vehicle Security DRA-DCC-8 manual Parallel Control Mode, Serial Control Mode, PLC Interface

Serial Control Mode

BAUD RATE (BPS)

S1

S2

S3

S4

S5

S6

S7

300

OFF

OFF

ON=4-20mA

ON

4800

ON

OFF

UNIT ID CODE

ON

9600

OFF

ON

OFF=0-20mA

ON

19200

ON

ON

ON

SW5 MSB

Self Test Mode

MODE

S1

S2

S3

S4

S5

S6

S7

SELF TEST#1

ON

OFF

X

X

OFF

SELF TEST#2

OFF

ON

X

*

OFF

SELF TEST#3

ON

ON

X

*

OFF

* according to para #5.2

6. PARALLEL CONTROL MODE

MODE	S1	S2	S3	S4	S5	S6	S7
PARALLEL MODE	OFF	OFF		X		*	OFF

* according to para #5.2

In the parallel control mode, the DRA-DCC-8 unit is controlled via a 15 bit bus. Three Address bits (A0-A3) select the proper current output channel and 12 Data bits (D0-D11) determine its value (A0 and D0 are MSB). The DRA-DCC-8 microprocessor continuously scans the input vector (Address + Data) terminals and updates its memory tables upon recognizing a new vector. The unit is asynchronous in nature. The data should be valid for at least 160 microseconds.

SINKSOURCE

6.1 PLC INTERFACE
The PLC's output modules can be divided into
three popular types; TTL output module, 24Vdc
sink type and 24Vdc source type.
There is a jumper selector on printed circuit card
PN 7040 which selects between Sink/Source
input. (TTL output module should usualy be
considered as sink type). See figure 2.	Figure 2.

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