GBA Global Bill Acceptors GBA ST1 Operation Manual
Page 26 of 37 Astrosys International Ltd
September 2011
ST1 Operations Manual Rev 2.0
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
See the Interface Description Manuals for further details.
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