MagTek MT-211232 RS-232 1 OR 2 TRACK - Manual (Page 16)

MT-211 RS-232 Swipe Reader, 1 or 2 Tracks
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The cables attached to the Readers have a 9-pin connector. The Pin list for this connector is
provided in Table 2-1. There are four adapter cables that can be connected from the Reader
cable to the PC serial port. The adapter cables are selected based on whether control signals are
required and whether the PC serial port is a 9- or 25-pin connector. The adapter cables are
described in the tables below.
Table 2-1. 9-Pin Connector Pin Numbers
Pin
Number Signal Description
1 Reserved for Y Cable
3 TXD Transmitted Data, RS-232 Signal. Transmits data from the
Reader to the Host.
2 RXD Received Data, RS-232 Signal. Receives data from the Host
to the Reader.
4* DTR Data Terminal Ready, RS-232 Signal. Transmits a signal to
the Host to indicate that the Reader is active, i.e., power is on.
5 GND Ground
6* DSR Data Set Ready, RS-232 Signal. Receives a signal from the
Host to indicate that the Host is active, i.e., power is on.
7* RTS Request to Send, RS-232 Signal. Sends a signal to the Host
to indicate that the Reader is ready to transmit data.
8* CTS Clear to Sent, RS-232 Signal. Receives a signal from the
Host that allows data to be transmitted.
9 Reserved for Y Cable
*The control signals on pins 4 and 6 and 7 and 8 are not supported in this unit and are wired
as indicated if switches 7B and 8B are on.
ADAPTER CABLE PIN LISTS
When using a cable with control signals, switch B7 and B8 must be set to off. The Reader will
not be in the ready mode unless the PC is ready to accept the data. The PC can check to see if
the Reader is active. Tables 2-2 and 2-3 describe the cables with control signals.
When using a cable without control signals, switch B7 and B8 must be set to on. Unless error
conditions exist, the Reader is ready to read cards at all times. The Reader does not check to see
if the PC is ready to accept data. Tables 2-4 and 2-5 describe the cables with control signals.