M-S Cash Drawer Corporation
KC type interface instructions
Introduction
The KC trigger board and external power supply (AC adapter) enable the cash drawer
to be controlled by a serial output port.
Interfacing
The trigger board requires a pulse >3.5 VDC for at least 100 milliseconds to reliably
open the drawer. The preferred and most common way to supply this signal is via a
standard serial port on your host operating at 300 BAUD or slower. The higher the baud
rate the longer the string of characters needed to produce the required pulse.
Installation – Dedicated Serial Interface
This method uses a DEDICATED RS-232 serial port on your computer or terminal to
send an "open" command to the trigger board in the cash drawer. Any data sent on this
port which is a minimum 100 milliseconds will open the cash drawer. If it is necessary
to independently operate a printer or other device on the same serial port, the KSI
interface type is required. Please refer to the KSI instructions for more information.
Cabling Specifications
Computer Serial Port
Data Terminal
Color
25 pin
9 pin
25 pin
Definition
White
2
3
3
TxD
Black
7
5
7
SG
Jumper 1*
4-5
7-8
4-5
RTS-CTS
Jumper 2*
6-8-20
1-4-6
6-8-20
DSR-DCD-DTR
* Jumpers simulate serial port handshaking
Integration
Connect the cash drawer interface cable to the computer's serial port. Plug the AC
adapter cable into the mating connector on the back of the cash drawer. Plug the AC
adapter into the 115 VAC wall socket. Check to make sure the drawer is unlocked and
operates manually with the keylock. Close the drawer. The drawer should now open
whenever data is sent to the serial port.
Testing
Testing the drawer involves configuring the serial port and sending data to the cash
drawer. The following test are for IBM PC's and compatibles. The software used with
the cash drawer should perform similar functions.
