Titan SER-4485-SI-M User manual

SER-4485-SI-M USER’S
MANUAL
2019 Edition
Titan Electronics Inc.
Web: www.titan.tw

1
The computer programs provided with the hardware are supplied under a license. The
software provided should be used only with the NCOM series hardware designed and
manufactured by TITAN Electronics Inc.
Trademarks
TITAN and the logo is a registered trademark of TITAN Electronics Inc. in Taiwan.
Microsoft, Windows, Windows XP, Windows Vista, Windows Server, Windows 7,
Windows 8, Windows 10 are trademarks of Microsoft Corporation. All other
trademarks and brands are property of their respective owners.
Copyright
Copyright © TITAN Electronics Inc. 2016. All right reserved. Reproduction of the
manual and software without permission is prohibited.
Disclaimer
TITAN Electronics Inc. provides this document and computer programs “as is” without
warranty of any kind, either expressed or implied, including, but not limited to, its
particular purpose. TITAN Electronics Inc. reserves the right to make improvements
and changes to this user manual, or to the products, or the computer programs
described in this manual, at any time.
Information provided in this manual is intended to be accurate and reliable. However,
TITAN Electronics Inc. assumes no responsibility for its use, or for any infringements
on the rights of third parties that may result from its use.
This product might include unintentional technical or typographical errors. Changes
are periodically made to the information herein to correct such errors, and these
changes are incorporated into new editions of the publication.

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Contents
INTRODUCTION..............................................................................................................3
FEATURES.......................................................................................................................4
SPECIFICATIONS .............................................................................................................5
HARDWARE SETTINGS....................................................................................................6
Block Diagram of SER-4485-SI-M ...............................................................................6
Installation .................................................................................................................7
PIN-OUT INFORMATION ................................................................................................9
Terminal Block (TB3) Pin-out .....................................................................................9
Terminal Block (TB1) Pin-out .....................................................................................9
APPLICATIONS..............................................................................................................10
1. Connect to a RS-232 port of computer................................................................10
2. Connect to existing RS-485 bus............................................................................10
3. Connect to a RS-232 port for more RS-485 devices ............................................11
4. Connect to existing RS-485 bus for more RS-485 devices ...................................11

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INTRODUCTION
The SER-4485-SI-M is an industrial-grade RS-232/485 to optically isolated 4-port RS-
485 repeater/splitter/hub. This RS-485 hub is designed to expand a RS-485 channel in
the RS-485 network to four RS-485 channels. It has one RS-232/RS-485 upstream input
port and four independent downstream RS-485 output ports. Data received from the
input channel will be simultaneously transmitted to all the four downstream RS-485
channels. Data received from the downstream RS-485 ports is forwarded back to the
upstream port only, and is not sent to any other RS-485 ports in the loop. Each RS-485
output port is designed with an individual driver. The failure of any RS-485 ports in the
downstream loop will not affect the normal function of the other RS-485 ports to
ensure reliable operation.
The SER-4485-SI-M 4-Port RS-485 hubs can be added to RS-485 network to increase
the maximum nodes up to 512 nodes of RS-485 devices and to increase the
transmission distance more than 1.2km with stable and reliable performance.
The SER-4485-SI-M is optically isolated with 3000VDC optical isolation. The optical
isolation protects your PC or RS-485 devices from spikes and surges on the RS-485
network, by converting the electrical pulse into an optical signal and then changing it
back into an electrical pulse. Your computer or related RS-485 device is well protected,
since the surges and spikes cannot cross the optical link. The SER-4485-SI-M is
protected by surge protector to withstand electrostatic discharge and power surges
up to 600W. Surge suppression on all signals prevent from damages caused by
lightning or high voltage.
The SER-4485-SI-M provides failure warning and protected circuit for 4 independent
RS-485 output ports. It is an effective solution for the connection of multiple RS-485
devices and reliability enhancement. The failure warning and protected circuit can
suffice to protect the communication system. When any of the RS-485 ports has
incorrect signals or reversed connection, the protected circuit can breakdown the RS-
485 port automatically. The breakdown port will be isolated to ensure that other RS-
485 devices work normally. The user can locate the failed port or devices connected
using the failure indication LEDs.

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FEATURES
•Industrial-grade 4 port RS-485 hub/splitter/repeater with rugged metal case
•Isolates and protects RS-485 devices from a RS-485 bus
•Electrical isolation up to 3000VDC from RS-485 upstream port to RS-485
downstream port
•Suitable for DIN-rail mounting
•600W surge protection circuit on all RS-485 bus (downstream and upstream ports)
•RS-232 and RS-485 input interface options
•Supports transmission data rate up to 230.4kbps
•Provides failure warning and protected circuit for four RS-485 downstream ports
•LEDs for power, communication and error status indication
•Input power connector with screw holes to lock the power cable
•12VDC power adapter included
•With diode bridge circuit to avoid wrong polarity input DC power
•Wide ambient temperature operation 0°C to 60°C (32°F to 140°F)
•CE, FCC approval

5
SPECIFICATIONS
Interface
Ports
Input (upstream)
1 RS-485 port (Data+, Data-) or
1 RS-232 port (TxD, RxD, GND)
Output (downstream)
4 RS-485 ports (Data+, Data-)
Transmission Media
2P twisted-pair or shielded cable
Transfer Distance
1.2km at 9.6kbps
400m at 115.2kbps
Max. Devices Supported
128 devices each channel
Speed
300bps to 230.4kbps
ESD Protection
15kV
Isolation
3000VDC
Connection
6-pin terminal block for upstream
10-pin terminal block for downstream
LED Indicators
LEDs
Power
1 (PWR, Red)
Port Status
2 (TxD: Green, RxD: Yellow)
Error Status
4 (Err1, Err2, Err3, Err4: Red)
Power
Input Power Range
DC or AC +9V~48V
Power Consumption
1.5W (max)
Mechanical
Housing
Rugged metal case
Weight
200g
Dimensions
62mm × 93mm × 24mm (W × L × H)
85mm × 93mm × 24mm (W × L × H) with DIN-rail ears
Installation
DIN-Rail
Environment
Operating Temperature
0°C to 60°C
Storage Temperature
-40°C to 85°C
Humidity
0 to 80% RH. Noncondensing

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HARDWARE SETTINGS
Block Diagram of SER-4485-SI-M

7
Installation
•For converting RS-232 to RS-485, connect the data cable to TxD, RxD and GND
signals in upstream ports of SER-4485-SI-M. You need to connect the TxD pin to an
external RS-232 TxD signal (pin3 of DB9), the RxD pin to an external RS-232 RxD
signal (pin2 of DB9) and the GND pin to external RS-232 GND pin (pin5 of DB9).
•For converting RS-485 to RS-485 hub, connect the data cable to the Data+, Data-
in upstream ports of SER-4485-SI-M. You need to connect the Data+ pin to the
Data+ signal of an external RS-485 bus and the Data- pin to the Data- signal of an
external RS-485 bus.
1. Connect the data cable to the Data+1~4, Data-1~4 in downstream ports of SER-
4485-SI-M for four RS-485 bus or devices.

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2. Connect your AC power adapter to SER-4485-SI-M 4-Port RS-485 hub. The red
power LED will light when the hub is receiving power. The SER-4485-SI-M provides
failure warning and protected circuit for 4 independent RS-485 downstream ports.
The failure indication LEDs Err1~ Err4 will light, when any one of the RS-485 ports
has incorrect signals or reversed connection. The user can locate the failed port or
devices connected, according to the failure indication LEDs. Err1 indicates the RS-
485 Bus1, Err2 the RS-485 Bus2, and so on.
The SER-4485-SI-M power input is designed with a diode bridge circuit. You don’t need
to care the input DC power polarity, and you can also use an AC to AC 9V ~ 48V power
adapter for SER-4485-SI-M.
3. After the SER-4485-SI-M is connected to all external devices, you can start data
communication program to transmit and receive serial data. When the upstream
port of SER-4485-SI-M sends data to downstream ports, the green TxD LED will
illuminate. When the upstream port receives data from downstream ports, the
yellow RxD LED will illuminate.

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PIN-OUT INFORMATION
Terminal Block (TB3) Pin-out
The following are the connector pin-outs for 6-pin terminal block connector.
Pin Number
Pin Type
Description
1 TxD
Input
Receive data from RS-232 TxD signal
2 RxD
Output
Send data to RS-232 RxD signal
3 GND
Ground
GND: signal ground
4 Data+
Input/Output
RS-485 transmit/receive data, positive polarity
5 Data-
Input/Output
RS-485 transmit/receive data, negative polarity
6 GND
Ground
GND: signal ground
Terminal Block (TB1) Pin-out
The following are the connector pin-outs for 10-pin terminal block connector (slave).
Pin
Number
Pin Type
Description
1 Data1+
Input/Output
RS-485 Port 1: transmit/receive data, positive
polarity
2 Data1-
Input/Output
RS-485 Port 1: transmit/receive data, negative
polarity
3 Data2+
Input/Output
RS-485 Port 2: transmit/receive data, positive
polarity
4 Data2-
Input/Output
RS-485 Port 2: transmit/receive data, negative
polarity
5 GND
Ground
GND: isolated signal ground
6 Data3+
Input/Output
RS-485 Port 3: transmit/receive data, positive
polarity
7 Data3-
Input/Output
RS-485 Port 3: transmit/receive data, negative
polarity
8 Data4+
Input/Output
RS-485 Port 4: transmit/receive data, positive
polarity
9 Data4-
Input/Output
RS-485 Port 4: transmit/receive data, negative
polarity
10 GND
Ground
GND: isolated signal ground

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APPLICATIONS
1. Connect to a RS-232 port of computer
The SER-4485-SI-M can convert RS-232 to RS-485 interfaces for extension to 4 highly
reliable RS-485 interfaces.
2. Connect to existing RS-485 bus
The SER-4485-SI-M can connect to existing RS-485 bus for extension to 4 highly
reliable RS-485 interfaces, and as many as 128 RS-485 hubs are supported on each RS-
485 bus.

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3. Connect to a RS-232 port for more RS-485 devices
The SER-4485-SI-M can convert RS-232 to RS-485 interfaces for extension to more
highly reliable RS-485 interfaces.
4. Connect to existing RS-485 bus for more RS-485 devices
The SER-4485-SI-M can connect to existing RS-485 bus for extension to more highly
reliable RS-485 interfaces, and as many as 128 RS-485 hubs are supported on each RS-
485 bus.