Wega Espresso Coffee Machine Service Manual download pdf (Page 89)

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espresso coffee machine - servings count

9. SERIAL CONNECTION

The system is able to interface in serial mode with the coffee machine.

Refer to the technical specifications for dosing for their correct configuration.

Connection is made by means of an RS232 serial line, with the appropriate cable.

Serial transmission characteristics:

• BAUD RATE 1200 bit/sec

• DATA LENGTH 8 bit

• PARITY EVEN

• STOP BIT 2

• CLOCK RATE 64

• VOLTAGE LEVELS 0/+5 Vdc

Operation

A code corresponds to each dosing key. When a serving is requested from a certain key, the dosing device sends the relative code by means

of its serial line. If it receives in reply the same code or a code from 1 to 15 (decimal) the serving is delivered, otherwise it is deleted. The

codes are typical of the traditional interface with the Gicar Stroke Count, which transmits a code that makes it possible to recognize the

staff that is using the machine (1...13 : waiters, 14 : manager, 15 : owner).

List of codes used by dosing:

• 11H Group 1 Key 1

• 12H Group 1 Key 2

• 13H Group 1 Key 3

• 14H Group 1 Key 4

• 15H Group 1 Key Tea 1

• 16H Group 1 Key Tea 2

• 17H Group 1 Stop/Cont/Prog Key (Dosmask series)

• 19H Group 1 Stop/Cont/Prog Key (Dosmask series)

• 21H Group 2 Key 1

• 22H Group 2 Key 2

• 23H Group 2 Key 3

• 24H Group 2 Key 4

• 25H Group 2 Key available

• 26H Group 2 Key available

• 27H Group 2 Stop/Cont/Prog Key (Dosmask series)

• 29H Group 2 Stop/Cont/Prog Key (Dosmask series)

• 31H Group 3 Key 1

• 32H Group 3 Key 2

• 33H Group 3 Key 3

• 34H Group 3 Key 4

• 35H Group 3 Key available

• 36H Group 3 Key available

• 37H Group 3 Stop/Cont/Prog Key (Dosmask series)

• 39H Group 3 Stop/Cont/Prog Key (Dosmask series)

• 41H Group 4 Key 1

• 42H Group 4 Key 2

• 43H Group 4 Key 3

• 44H Group 4 Key 4

• 45H Group 4 Key available

• 46H Group 4 Key available

• 47H Group 4 Stop/Cont/Prog Key (Dosmask series)

• 49H Group 4 Stop/Cont/Prog Key (Dosmask series)

The system replies code 15 (decimal), thus enabling delivery of the serving (even if the activation key is inserted).

During any data reading or deletion operation, the system does not reply or replies with a code which is not recognized by the dosing. In this

case, delivery is not performed and the serving is not counted.

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Wega Espresso Coffee Machine Service Manual Page 89

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