GBA
Global Bill Acceptors
GBA ST2
Operations Manual
Page 18 of 25
Astrosys International Ltd
January 2009
GBA ST2 Op Manual V1.01
Signal Description
/ABN (Alarm) Output – low for 100ms (parallel interface) or permanently low to
indicate error or alarm in serial and pulse interfaces.
/VEND n The vend outputs 1 to 6 (parallel interface) are capable of sinking up to
50 MA at 12VDC.
/ESCROW Input - when low this selects Escrow mode
PULSE , /SERIAL select Input - when low selects Mars® Serial (A) mode. High or not connected
selects pulse mode
/BUSY Output – a low output indicates when the acceptor is operating
/DATA Output - used to send data to the host machine
/CTS Input - from host that tells acceptor that host is ready to receive the
message
/Enable Input - Determines whether or not the acceptor will accept bills. Logic
low = accept bills
/RTS (Interrupt) Output to host signal that the acceptor wishes to send a message to the
host.
/PULSE O/P The pulse credit output is capable of sinking up to 50mA.
The pulse pattern is selectable via the programming card. In the normal
mode the pattern is 50mS on/300ms off. In the fast mode a
50mS/50mS pattern results.
TXD Output – UART, open collector
RXD Input – UART, TTL level receive data
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