User's Manual

are not permanently powered (i.e. not pulled up) but rather pulsed periodically to sense its status. A ‘high’ will be read
back from an internal sense capacitor if the switch is open and a ‘ low’ if switched to GND.
MODBUS1&2 (MB1 & MB2)
These two linked headers provides controlled V_BAT (+3.6V) and V_MAIN_BAT (+12V) and a communication channel to
a number of peripherals in a multidrug topology. Peripherals on this bus include a human proximity detector, expiry
indicator, coin handling unit etc.
KEYPADS (H7)
H7 is a 20-way header providing V_BAT (+3.6V), V_KBD_BK_LED (switched +3.6V) for keypad backlighting and an 8-Col x
8-Row keypad matrix. This allows any number of keypads to be daisy chained and each keypad to be individually
mapped to a 64 position key map.
Printer Power (H10) and Printer Data Port
The printer power header (H10) provides high capacity switched +5V, +12V and +24V suitable for supplying single or
double sided thermal paper receipt printers.
The printer data port header provides a bidirectional RS232 communication link between the receipt printer and the
MSCM.
Bank Note Acceptor Power (H9) and Note Data Port
The BNA power header (H9) provides high capacity switched +5V, +12V and +24V suitable for supplying Bank Note
Acceptors (BNA’s).
The NOTE DATA port header provides a bidirectional RS232 communication link as well as a logic level pulsed
communication channel between the BNA and the MSCM.