Murata Electronics North America HN1510 Manual Do Utilizador
HN-3500 Adapter
18
HopNet Family of Products
M-2410-0010, Rev. -
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 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.
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)