3. CONNECTIONS
Pin #
Label
1
Alarm Out 1
2
Receive Data
3
Transmit Data
4
DTR
5
Ground
6
DSR
7
RTS
8
CTS
9
Alarm Out 2
Table 1: Pin-Out of the DB-9 Female Connector on the RegCom-Pro
3.2 RS-232 SERIAL INPUT
The RegCom-Pro accepts serial data via the DB-9 Female connector located on the rear of RegCom-Pro. This connector
is similar to "AT" type computer RS232 serial ports and the pin out is identical. Table 1 shows the standard pin out for
RegCom-Pro RS-232 female connector. On the other hand Table 2 compares the RegCom-Pro RS-232 with standard "AT"
computer's RS-232 connector.
RegCom-Pro POS / Cash Register Interface
Direction
From RegCom-Pro
To RegCom-Pro
From RegCom-Pro
From RegCom-Pro
-------------------
From RegCom-Pro
To RegCom-Pro
From RegCom-Pro
From RegCom-Pro
PIN #
SIGNAL NAME ( RS232 )
1
CD (Carrier Detect )
2
RXD ( Recieve Data )
3
TXD ( Transmit Data )
4
DTR ( Data Terminal Ready )
5
SG ( Signal Control )
6
DSR ( Data Set Ready )
7
RTS ( Request to Send )
8
CTS ( Clear to Send )
9
RI ( Ring Indicator )
Table 2: RS-232 DB-9 Pin-Out vs RegCom-Pro DB-9 Pin-Out
Function
Open Collector Transisitor
Data from Cash Register
Data to Cash Register
Remain High or RS-485 Input (+)(A)
Signal / Power Gnd or Isolated RS-232 Input Gnd
Remain High or RS-485 Input (-)(B)
Alarm Input or Hardware Handshaking
DVR RS-232 Output or Hardware Handshaking
Open Collector Transistor or Signal / Power Gnd
RegCom-Pro
Alarm Out 1
RXD
TXD
Aways True
GND
Aways True
RTS ( Option)
CTS ( Option)
Alarm Out 2
12
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