HP 24SII Bedienungsanleitung PDF herunterladen (Seite 36)

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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-

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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HP 24SII Bedienungsanleitung Seite 36