AL55/66 Technical manual Version 1.1
6. Serial communication
New generation of coin selectors AL55 or AL66 use
cctalk®
communication protocol.
This protocol was developed by company Money Controls(ex. Coin Controls) to enable
connection of different peripheral devices
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in smal network.
Protocol is mostly used in gaming and casino machines but it can be implemented in
any other types of machines that use same type of devices.
It is public protocol and free to use. Finde documentation on:
www.cctalk.org
.
Communication protocol of ALBERICI coin selectors AL55/66 comply to
generic specification 4.4
6.1 Communication specifications
Serial communication was derivated from RS232 standard.
It is low data rate NRZ (
N
on
R
eturn to
Z
ero
) asyncronous communication with:
Baud rate 9600, 1 start bit, 8 data bits, no parity, 1 stop bit.
RS232 handshaking signals (
RTS, CTS, DTR, DCD, DSR
) are not suported.
Mesage integrity is controled by means of checksum calculation.
6.1.1 Baud rate
The baud rate of 9600 was chosen as compromise betwen cost and speed.
Timing tolerances is same as in RS232 protocol and it should be less than 4%.
6.1.2 Voltage level
To reduce the costs of connections the “Level shifted “ version of RS232 is used.
The idle state on serial connector is 5V, and active state is 0V.
Mark state (
idle
)
+5V nominal
from 3.5V to 5V
Space state (active)
0V nominal
from 0.0V to 1.0V
Data I/O line is “open collector” type, so it is possible to use device in systems with
different voltage (
12V pull up in older devices
).
6.1.3 Connection
The connection of Coin selector at network is achieved by means of 4 pole JST
connector (
standard type 7
). Connector is used for power supply and communication as
well. For schematics and and connector appirance see image1.
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Coin selectors, Hoppers(
pay out device
), Banknote readers etc.
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