Adapter
C-4
HopNet Family of Products
800281 Rev. B
Flow Control Indicators
The HN-3500 has flow control indicators for testing and as a way to quickly check
the operation of the adapter. Refer to the illustration below.
The table below describes the function of each LED.
Name
Color
Description
TXD
Red
Transmit Data
RXD
Red
Receive Data
DTR
Red
Data Terminal Ready
CD
Red
Carrier Detect
PWR
Green
Continuous DC power is applied
DB-9 Connector
The HN-3500 is equipped with a DB-9 connector to link the RS-232 interface to a
terminal block for the RS-485 interface. See the following illustration for the signal
description.
TXD
RXD
DTR
CD
POWER
COMM
FLOW CONTROL INDICATORS
9 Not Used
8 Clear to Send (CTS)
7 Request to Send (RTS)
6 Data Set Ready (DTR)
5 Ground
4 Not Used
3 Transmit Data (TX)
2 Receive Data (RX)
1 Data Carrier Detect (DCD)
Содержание HopNet 10 Series
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