Technical Description
Technical Description
The
Connector Pin Assignments
RS-232 Signals (DB-25 Female)
Signal | Name | Pin # | Mode |
GND | Ground | 7 |
|
RD | Receive Data | 3 | Input |
CTS | Clear To Send | 5 | Input |
DSR | Data Set Ready | 6 | Input |
DCD | Data Carrier. Detect | 8 | Input |
RI | Ring Indicator | 22 | Input |
TD | Transmit Data | 2 | Output |
RTS | Request to Send | 4 | Output |
DTR | Data Terminal Ready | 20 | Output |
Note: These assignments meet
Technical Note: The modem control signals are biased in the following fashion: RTS and CTS are connected, DTR is connected to DCD and DSR, and RI is tied inactive.
RS-422/485 Pin Assignments (6 Position Screw Terminal)
Signal |
| Name | Pin # | Mode |
RDB | RX+ | Receive Data Positive | 1 | Input |
RDA | RX- | Receive Data Negative | 2 | Input |
TDB | TX+ | Transmit Data Positive | 3 | Output |
TDA | TX- | Transmit Data Negative | 4 | Output |
GND | GND | Ground | 5 |
|
SHIELD | SH | Shield | 6 |
|
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