Protocol: COIN VALIDATOR L86S PS
2
1. INTRODUCTION
1.1. MAXIMUM REPLY TIMES
The default timeout is 30 milliseconds. In tele programming and hardware test commands the
timeout is increased to 200 milliseconds.
The time needed to begin communication is 30 milliseconds.
1.2. SERIAL
COMMUNICATION
PROTOCOL
The protocol is a simplification of cctalk® protocol, which is a standard serial communication
used in coin mechanisms in the gaming sector. This protocol is free and can therefore be used
without paying licences or rights.
1.3. HARDWARE
Communication is carried out through a 2-way interface:
1. Transmission line (data transmission from the Validator to the Telephone)
2. Line of reception (data transmission from the Telephone to the Validator)
The data is established at TTL levels: 5 Vdc is a “0” and 0 Vdc is a “1”. Rest is therefore 5 Vdc.
The Telephone does not apply voltages to the communication lines if the Validator is not
“awake”.
The Validator has a pull-up resistor on its
reception line so the Telephone can detect
that the Validator is “awake”.
PULL-UP
If it wants to keep the Validator “awake” it is necessary to keep the TEST line high.
The Validator will stay “awake” for approximately 2.5 seconds after removing the voltage from
this line. There must be at least 50 milliseconds after freeing the GENERAL INHIBITION input
before applying voltage to the TEST input.
10044 UK 11 -2003
