C120S Technical Manual TSP093.doc Issue 1.2 – January 2005
Money Controls 2005. All rights reserved.
Page 13 of 15
6.4. Messages
The sequence to be followed when the Host Controller wishes to send a message to the coin
acceptor is as follows:
¾
/READY signal activated by Host Controller
¾
Coin acceptor changes from IDLE to RUN state
¾
Host Controller sends message
¾
Coin
acceptor
replies
with completion message
¾
/READY signal released by Host Controller
¾
Coin acceptor adopts IDLE state
Note: The coin acceptor cannot power down while the /READY signal is pulled low.
6.5. Validation
The sequence to be followed when a coin is inserted into the coin acceptor is as follows:
¾
Coin detected in coin acceptor
¾
Coin acceptor changes from IDLE to RUN state
¾
Coin validated and result calculated (true / reject / error)
¾
/READY signal activated by coin acceptor
¾
Host Controller requests result code (or coin acceptor time-out)
¾
Coin acceptor replies with result code
¾
/READY signal released by coin acceptor
¾
Coin acceptor adopts IDLE state
Note: In the event of a checksum error, the Host Controller can request the result code again
within the ‘credit timer’ period.
6.6. The coin download process
Involves the use of database generated coin data files. The relevant data for the selected
coin or coins is sent by the Host Controller, which may be PC based. This information
includes data necessary for the coin prediction, along with credit code, window position etc.
6.7. Field
re-programming
Field reprogramming (Flash) via ccTools (when available)
