Pin list and i/o signals, Signal, Specifications – MagTek MT-215232 RS-232 User Manual
Page 12: Table 1-1. specifications
MT-215232 Insertion Reader
6
PIN LIST AND I/O SIGNALS
Table 1-2 lists the pin numbers, signals, and descriptions for connector J2 on the Reader. See
Section 3 for the Interface Wire List for the MT215232.
Table 1-2. J2 Connector Signals
Pin
Number
Signal Description
1,2 +5v
Either one or both pins can be connected to a +5V power supply. See Specifications,
Section 1 for ratings.
3,4 GND
Either one or both pins can be used as circuit ground.
5 DSR
Data Set Ready, RS-232E signal. Indicates to the Reader that the Host is active.
6
Used for factory testing only.
7 DTR
Data Terminal Ready, RS-232 signal. Indicates to the Host that the Reader is active.
8* AUX
1
Auxiliary driver 1. Operated by commands from the Host.
9 CTS
Clear to sent, RS-232C signal. Signal from the Host to the Reader allowing data to be
transmitted.
10* AUX
2
Auxiliary driver 2. Operated by commands from the Host.
11 RTS
Request to send, RS-232E signal. The Reader transmits the signal to the Host
indicating the Reader is ready to transmit data.
12
CARD
PRESENT
Used for factory testing only.
13 RD
Received data, RS-232E signal. Reader receives data sent from the Host.
14***
REAR
SENSOR
BLOCKED
Indicates the presence of a card when it is fully inserted in the reader.
15 TD
Transmitted data, RS-232E signal. Transmits data from the Reader to the Host.
16*** BUSY
Used for factory testing only.
17** N/C
In previous versions of the Reader this pin was used for -12V.
18*** READY
Indicates the unit is ready to accept a card.
19** N/C
In previous versions of the Reader this pin was used for +12V.
20*** ERROR
Indicates an unsuccessful read attempt. This signal remains active for 2.0 seconds.
*These signals are open collector outputs, capable of driving visual indicators, solenoids, relays, etc. The
outputs are driven by a Texas Instruments ULN 2003AN. Any use of these drivers must meet the
following specifications: ON = 0.8V @0.2 amps max. OFF = 50.0V max.
**The 5V to +12V/-12V conversion is now being done on the processor board. Pins 17 and 19 (which
formerly transmitted the +12V/-12V) now have no connection so that the new version of the Reader can
be used interchangeably with the old version of the Reader.
***See Section 3 for details and mating connectors.