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Sector 4 does not contain program code but is used to store non volatile data such as the
currencies used, the messages for the language downloaded, the language selected, the
keyboard selected, the parameters for communication with the PC, the sealed part
recognition code (digital seal), etc.
Sectors 5 to 19 are unprotected and contain the following programs:
- Main loop, running totals management, user functions, keyboard decoding, printing,
real time clock, checking of voltages and parameters, PC communications, network
communication, various utilities, messages in the three basic languages, fonts, table
of vectors, C library, etc.
- Complemented 16 bit global check-sum of these 15 sectors.
IC1 (DS1305E) is a real time clock.
IC17 (MCP 300B) is a 10 bit Analogue/Digital converter (ADC). The processor (IC12
68CK331) uses it, via the SPI interface to continuously measure and know:
- CELL_PAP (paper present)
- M_PACK (mesure the pack's voltage)
-THERM (Temperature of the thermal head)
- CONTROL_VTETE (voltage of the thermal head)
- NTC_BAT (Temperature of the battery pack)
- TP24 (not used)
- P_SECT (mains voltage present)
- P_BAT_EXT (external battery voltage present)
IC24, IC26 and IC29 manage the keys on the keyboard.
All the logic circuits are supplied with a +3.3V voltage.
10.4.2 The printer part
The ROHM KF2002 GD10 thermal printer head is used in RI Series and Atoll scales.
The processor controls the loading of the printer head (LATCH, SCK, MOSI).
The print head heating duration and signals control are calculated and produced by the
processor (IC12) .
Data as thermal head temperature (THERM), head's power supply voltage (VTH and
CONTROL_VTETE), paper detection (CELL_PAP) are supervised by the ADC (IC17 MCP
300B) .
Motor phases control and current regulation for each phase are achieved by power driver
L6219 (IC32) .
10.4.3 The display part:
RI Series and Atoll scales are equipped of two brand of LCD display POWERTIP and TRULY
the Powertip has contrast compensation over temperature up to about 45/50 °C, the Truly
one has liquid crystal stable up to 65/70 °C and does’nt need any contrast compensation
device.
It has 128 x 128 pitch graphic resolution (1 pitch = 0.70mm).
The back-lighting is of the "AREA" type, using light emitting diodes (LEDs).
It has a synchronous serial interface (microprocessor port).
Summary of Contents for RI Series
Page 1: ...RI Series Maintenance manual Range 15 kg d 5g Range 6 kg d 2g...
Page 21: ...01 09 2006 Page 21 5 Seal...
Page 40: ...01 09 2006 Page 40 On Off switch for internal and external batteries On Off switch for mains...
Page 44: ...01 09 2006 Page 44 10 3 2 Electrical diagram 29120154...
Page 50: ...01 09 2006 Page 50 10 4 7 Diagrams Main Board 71207283 1 6...
Page 51: ...01 09 2006 Page 51 Main Board 71207283 2 6...
Page 52: ...01 09 2006 Page 52 Main Board 71207283 3 6...
Page 53: ...01 09 2006 Page 53 Main Board 71207283 4 6...
Page 54: ...01 09 2006 Page 54 Main Board 71207283 5 6...
Page 55: ...01 09 2006 Page 55 Main Board 71207283 6 6...
Page 74: ...01 09 2006 Page 74...
