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￿￿￿￿￿￿￿￿￿￿￿￿￿ ￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

IMPORTANT: Determine whether the devices which will connect to the Model 24SII DES are DTE (Data Terminal Equipment) or DCE (Data Communication Equipment). The following devices are generally DTE: terminals, printers, computers like the IBM PC. The following devices are DCE: modems and some computers.

If your device transmits data on Pin 2 or receives data on Pin 3, it is DTE. If your device receives data on Pin 2 and transmits data on Pin 3, it is DCE. However, to verify the interface requirements, please refer to the Owner's Manual for your device.

The serial ports on the M24SII-V03 I/O module has DB-25 male DTE connectors and use the following signals for communication:

DTE PORT SIGNALS

PIN#

EIA-232

DIRECTION

DESCRIPTION

 

 

 

 

 

 

 

 

1

PGND

----

Protective ground

 

 

 

 

2

TX

Output

Data out

 

 

 

 

3

RX

Input

Data in

 

 

 

 

4

RTS

Output

+ Voltage when Model 24SII DES powers-

 

 

 

up

 

 

 

 

5

CTS

Input

Model 24SII DES transmit enabled when

 

 

 

+12V. Internally enabled if no wire

 

 

 

connected.

 

 

 

 

7

SGND

----

Signal ground

 

 

 

 

20

DTR

Output

- Voltage when Model 24SII DES print

 

 

 

buffer full.

 

 

 

 

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