Configuration And Installation; Rs-232 Interface; Dce Or Dte Configuration; Connecting The Rs-232 Device - Black Box CL512A-F User Manual

MODULAR CURRENT LOOP ADAPTER

3. Configuration and Installation

3.1 RS-232 Interface

3.1.1 DCE DTE C
OR
The adapter connects easily to an RS-232 device such as a DTE (terminal,
computer) or DCE (modem, line driver, multiplexor).
The attached RS-232 device supplies power to the adapter via a positive (+12)
voltage on the adapter's pin 20 (if the unit is configured as DCE) or pin 6 (if the
unit is configured as DTE). Pinnings for both configurations are shown below.
Pin 2 = TD (output)
Pin 3 = RD (input)
Pin 6 = DSR (input)
Pin 7 = Signal Ground
To configure the adapter, simply move the external switch to the DTE or DCE
position. If you are going to plug the adapter into a DTE, move the adapter switch
to the DCE position. If you are going to plug the adapter into a DCE, move the
adapter switch to the DTE position.
3.1.2 C
ONNECTING THE
To connect the adapter to the RS-232 device, simply plug the unit's DB25
connector into your RS-232 equipment's DB25 connector. (The unit is available in
both male and female versions to accommodate your equipment.)
6
ONFIGURATION
DTE
RS-232 D
EVICE
DCE
Pin 2 = TD (input)
Pin 3 = RD (output)
Pin 20 = DTR (input)
Pin 7 = Signal Ground