CPI TALOS - Non-Isolated Serial (NISR) Interface; Accept Enable

Talos Operation and Service Guide
23
Non-Isolated Serial (NISR) Interface
NISR-Gaming and NISR-Vending are non-isolated interfaces which provide logic level
(TTL/CMOS) serial communications with handshaking. They permit communication of all bill
types accepted by the Talos Bill Acceptor, as well as messages pertaining to the status of
the Bill Acceptor. The messages appear in the form of an eight bit word per Figure 10.1. The
interfaces use one serial output line from the validator (DATA) and three control lines. Two
are from the Control System, ACCEPT ENABLE and SEND, and one is from the validator,
INTERRUPT. The Bill Acceptor is always passive and only responds with a request to send
a message to the control system upon the occurrence of some activity; i.e., bill recognized,
accepted, returned, or stacker full.
Connections
Pin Name (all pins refer to P1)
Type
115 VAC
pin
24 VAC
pin
12 VDC
pin
115VAC HOT / 24VAC HOT/ 12VDC HOT
Power
20
3
19
115VAC NEUTRAL / 24VAC NEUTRAL/
12VDC Return
Power
4
20
16
Earth
Power
21
None
None
LOW LEVEL GROUND
Ground
10
10
10
SERIAL / PULSE_NOT
Input
9
9
9
ACCEPT-ENABLE_NOT
Input
24
24
24
SEND_NOT
Input
26
26
26
INTERRUPT_NOT
Output
8
8
8
SERIAL DATA OUT
Output
11
11
11
OUT-OF-SERVICE POWER (200 ohms to
+5VDC)
Output
25
25
25
OUT-OF-SERVICE_NOT
Output
22
22
22
The Bill Acceptor is controlled by the Control System via the following input signals:
Accept Enable
Logic low allows bill acceptance for all bills. When a bill has been accepted, the status of
this line determines whether the bill is to be credited or returned. A one second delay must
be allowed when this line is de-activated (transition to the high state) to allow a bill already in
process to be accepted.