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In each case, a single dc-to-dc converter converts voltage to +24 V dc and +5 V dc.
An auto-switch circuit on the interface card senses the operating mode (RS-485,
EIA-232, powered USB, or standard USB with power brick) and routes input
voltages appropriately.
v When operating in RS-485 mode, the +38 V dc is converted to +24 V dc and the
v When operating in EIA-232 or USB mode, the +24 V dc is passed through and is
Note: Both voltage sources should not be connected to the printer at the same
RS-485 serial I/O parameters
Printer Address
AWAIT-60H
BWAIT-48H
For more information about serial I/O communications, see 4680 Store Systems
Serial I/O Channel Attachment Information, which is available from IBM Industry
Corporate Relations.
Cash drawer connector pin assignments
The SureMark printers have a single cash drawer connector. This connector can
drive either a single cash drawer (see "Description of models" on page 4 for the
cable part number) or two cash drawers using a special cable. The connector also
provides a status line which indicates if one of the cash drawers is open.
Drive voltage for each cash drawer solenoid is 24 V dc at a current of 1 ampere.
Connector pins are assigned as follows:
The cash drawer solenoids should be connected between pins 4 and 2 for cash
drawer 1 and between pins 4 and 5 for cash drawer 2. A Y-cable is required to bring
out all the appropriate lines to attach the two units.
The cash drawer status line has a 10k resistor pull-up connected to the +5 V dc.
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SureMark Printers User's Guide
+5 V dc is passed straight through.
also converted to +5 V dc.
time, even if one of the sources is powered off. System damage could occur
under these conditions.
35
extra stop bits (after printer address)
extra bits/byte (after printer data bytes)
Table 7. Cash drawer connector pin assignments
Pin
Signal
1
Not Connected
2
Solenoid 1 Driver
3
Cash Drawer Status
4
+24 V dc
5
Solenoid 2 Driver
6
Ground
Updated April 2, 2009
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