Rs232 pin configuration, E unit to a host device via rs232; see, Serial – Honeywell DOLPHIN 9700 User Manual

Page 124: Connector, Serial connector

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RS232 Pin Configuration

Refer to this table if you want to make your own cables.

To do so, you must determine if your host RS232 device is:

• 9-pin or 25-pin and
• configured as a DCE or DTE device.

Serial Connector

The base connector is straight to the printed circuit board (PCB). The ninth pin sends 500mA at 5V power
out. This can power a peripheral device, such as a mobile printer, as long as that peripheral device can
accept 500mA at 5V.

Note:

Signals referenced are for a DTE device.

Base/Host Port (DCE)

IBM AT DB9
(DTE)

IBM XT DB25
(DTE)

Modem DB25
(DCE)

Pin / Input Signal

2 / (RD)

2

3

2

3 / (TD)

3

2

3

5 / (SG)

5

7

7

4 / (DTR)

4

20

6

6 / (DSR)

6

6

20

7 / (RTS)

7

4

5

8 / (CTS)

8

5

4

Pin

Description

1

Internal Jumper to Pin 6

2

TXD

3

RXD

4

DSR

5

GND

6

DTR

7

CTS

8

RTS

9

5 Volt Out

5 4

3

2 1

9

8

7

6

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