CET PMC-1302-3 User manual

PMC-1302-3
Ethernet Serial/LoRa Gateway
User Manual
Version: V1.2
July 3, 2020,

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This manual may not be reproduced in whole or in part by any means without the express
written permission from CET Electric Technology (CET).
The information contained in this Manual is believed to be accurate at the time of
publication; however, CET assumes no responsibility for any errors which may appear here
and reserves the right to make changes without notice. Please consult CET or your local
representative for latest product specifications.

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Limited warranty
CET Electric Technology (CET) offers the customer a minimum of 12-month
functional warranty on the device for faulty parts or workmanship from the date
of dispatch from the distributor. This warranty is on a return to factory for
repair basis.
CET does not accept liability for any damage caused by device malfunctions.
CET accepts no responsibility for the suitability of the device to the application
for which it was purchased.
Failure to install, set up or operate the device according to the instructions herein
will void the warranty.
Only CET’s duly authorized representative may open your device. The unit
should only be opened in a fully anti-static environment. Failure to do so may
damage the electronic components and will void the warranty.

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Table of Contents
Chapter 1 Introduction .............................................................................................................................5
1.1 Overview.....................................................................................................................................5
1.2 Features ......................................................................................................................................5
1.3 Applications ................................................................................................................................5
1.4 Getting more information ..........................................................................................................5
Chapter 2 Installation................................................................................................................................6
2.1 Appearance.................................................................................................................................6
2.2 Mounting ....................................................................................................................................6
2.3 RS-485 Wiring .............................................................................................................................7
2.4 Ethernet Port (10/100BaseT) ......................................................................................................7
2.5 Power Supply Wiring ..................................................................................................................7
Chapter 3 Operating the PMC-1302-3 ESG ...............................................................................................8
3.1 Front Panel LED Indicators..........................................................................................................8
3.2 Reset Button ...............................................................................................................................8
3.3 Typical Application......................................................................................................................8
Chapter 4 Configuring the PMC-1302-3 ESG via Web Interface ...............................................................9
4.1 Web Console Login .....................................................................................................................9
4.2 Ethernet....................................................................................................................................10
4.3 Serial Port & LoRa .....................................................................................................................10
4.4 Change Password......................................................................................................................13
4.5 Device Information ...................................................................................................................13
4.6 Exit……………………………………………………………………………………………………………………………………….13
4.7 Reboot ......................................................................................................................................14
Chapter 5 Communications through the PMC-1302-3 ESG ....................................................................15
5.1 Topological Graph .....................................................................................................................15
5.2 Configuring the PMC-1302-3 ESG.............................................................................................15
5.3 Configuring PecStar iEMS .........................................................................................................16
Appendix A - Technical Specifications.....................................................................................................18
Appendix B - Standards Compliance.......................................................................................................19
Appendix C - Ordering Guide ..................................................................................................................20

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Chapter 1 Introduction
This chapter provides an overview of the PMC-1302-3 ESG and summarizes many of its key features.
1.1 Overview
The PMC-1302-3 ESG is an Industrial Ethernet Serial/LoRa Gateway which provides one 10/100BaseT
Ethernet port, two RS-485 ports and an optional wireless LoRa port with configurable ISM Bands. It is
the ideal equipment for connecting RS-485 and optionally LoRa enabled devices to an IP-based
Ethernet LAN, making it possible to access serial and optionally LoRa enabled devices over your
Ethernet network for any SCADA or Automation applications. The PMC-1302-3 ESG has been
specifically designed with industrial automation in mind and therefore provides un-surpassed
performance and reliability under the harshest industrial or commercial environments.
1.2 Features
1x10/100BaseT
2xRS-485 port
Optional LoRa port with configurable ISM Bands for EU863-870, RU864-870, IN865-867,
US902-928, AU915-928, AS920-923 and AS923-925
8kV ESD protection
1.5kV isolation protection for Ethernet port
3kV isolation protection for RS-485
One-key Reset to default factory
Simple configuration via its built-in web interface
DIN Rail Mount
Extended operating temperature
1.3 Applications
The PMC-1302-3 ESG supports the efficient transfer of serial packets between the upstream
network-based applications, the downstream RS-485 serial and optionally LoRa wireless devices via a
TCP/IP connection. Instead of using a Windows based "Virtual COM" driver with a port-mapping
utility, which is often plagued with driver incompatibility among the many different Windows
versions, the PMC-1302-3 ESG allows applications to directly connect to it via a TCP/IP connection for
the transparent transfer of serial packets inside TCP/IP frames to and from downstream devices.
Perfectly suited for communicating with industrial devices that have timing sensitive protocols, the
PMC-1302-3 ESG provides a reliable interface which allows SCADA or similar applications that already
support direct connection with Ethernet Gateway to communicate with serial devices independent of
the serial protocols used.
The PMC-1302-3 ESG optionally supports the LoRa port with configurable ISM Bands for wireless IoT
applications in most countries.
1.4 Getting more information
Additional information is available from CET via the following sources:
Visit www.cet-global.com
Contact your local representative
Contact CET directly via email at [e-mail]

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Chapter 2 Installation
2.1 Appearance
Figure 2-1 Appearance
Figure 2-2 Upper Connector Arrangement
Figure 2-3 Lower Connectors Arrangement
2.2 Mounting
The PMC-1302-3 ESG should be installed in a dry environment with no dust and kept away from heat,
radiation and electrical noise sources.
Installation steps:
Before installation, make sure that the DIN rail is already in place.
Move the installation clip at the back of the PMC-1302-3 downward to the “unlock” position.
Align the top of the mounting channel at the back of the PMC-1302-3 at an angle against the
top of the DIN rail as shown in Figure 2-4 below.
Rotate the bottom of the PMC-1302-3 towards the back while applying a slight pressure to
make sure that the device is completely and securely fixed on to the DIN rail.
Push the installation clip upward to the “lock” position to secure the PMC-1302-3 on to the DIN
Rail.

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Figure 2-4 DIN-Rail Mounting
2.3 RS-485 Wiring
The PMC-1302-3 ESG provides two RS-485 ports (P2 and P3). Up to 32 devices can be connected on a
RS-485 bus. The overall length of the RS-485 cable connecting all devices should not exceed 1200m.
If the master station does not have a RS-485 communications port, a RS-232/RS-485, USB/RS-485 or
Ethernet/RS-485 converter with optically isolated outputs and surge protection should be used.
The following figure illustrates the RS-485 communications connections on the PMC-1302-3 ESG:
Figure 2-5 S485 Communications Connections
2.4 Ethernet Port (10/100BaseT)
The PMC-1302-3 ESG comes standard with an Ethernet Port (P1) using the MDI/MIDX Auto-detect
RJ45 connector which means users can connect with a straight-through cable or an Ethernet
cross-over cable. The table below lists the meaning for each pin.
RJ45 Connector
Pin
Meaning
1
Transmit Data+
2
Transmit Data-
3
Receive Data+
4,5,7,8
NC
6
Receive Data-
Table 2-1 RJ45 Connector Pin Description for 10/100BaseT Applications
2.5 Power Supply Wiring
For AC supply, connect the live wire to the L/+ terminal and the neutral wire to the N/- terminal.
Figure 2-6 Power Supply Connections

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Chapter 3 Operating the PMC-1302-3 ESG
3.1 Front Panel LED Indicators
There are three or four LED indicators on the PMC-1302-3 ESG’s Front Panel as described in the
following table.
LED Indicator
Color
Status
Function
Run
Green
On
System is running abnormally
Off
Power off or system is running abnormally
Blinking
Power is on and system is running normally
Data
(LoRa option only)
Yellow
On
LoRa is running abnormally
Blinking
LoRa is receiving or transmitting data
P2
Green
Blinking
P2 is receiving data
Yellow
Blinking
P2 is transmitting data
P3
Green
Blinking
P3 is receiving data
Yellow
Blinking
P3 is transmitting data
Table 3-1 LED Indicators
3.2 Reset Button
There is a Reset button at the lower right-hand corner of the PMC-1302-3’s front panel. Pressing and
holding the Reset button for 1 to 5 seconds will cause the PMC-1302-3 ESG to initiate a reboot
sequence. The reboot process would be completed in approximately 30 seconds. Pressing and
holding the Reset button for more than 5 seconds will reset the PMC-1302-3 ESG to default factory
configuration.
3.3 Typical Application
The following figure shows the typical application for the PMC-1302-3 ESG.
Figure 3-1 Typical Application

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Chapter 4 Configuring the PMC-1302-3 ESG via Web Interface
4.1 Web Console Login
1) Open your Internet Explorer with the scripting function enabled. To enable scripting for your
browser, right click on your Internet Explorer icon and then select Properties from the pop-up
dialog box. The Internet Options window appears. Select the Security tab and then click on the
Custom Level button near the bottom of the window. The Security Settings window appears.
Enable the three options as shown below and then click OK.
Figure 4-1 Internet Setting
2) The default IP Address of the PMC-1302-3 ESG’s Ethernet Port is 192.168.0.127. Configure the IP
Address and the Subnet Mask of the PC as 192.168.0.100 and 255.255.255.0 as shown below.
Figure 4-2 Setting IP Address
3) Enter the IP Address of the PMC-1302-3 ESG in the Address input box of the Internet Explorer
and then press <Enter>.
4) The PMC-1302-3’s Web Console Login page appears. Enter the User Name and Password and
then click Login. The default user name is “user”, and the default password is “123456”.

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Figure 4-3 Login Interface
5) Once the log-in credentials are confirmed, the following page appears.
Figure 4-4 Basic Settings
4.2 Ethernet
The P1 (Ethernet) port’s settings can be configured here based on the actual situation. Click Save to
confirm your changes. Please be reminded that the IP Address and Default Gateway for the Ethernet
port should be in the same subnet.
Figure 4-5 P1 Settings
4.3 Serial Port & LoRa
The PMC-1302-3 comes standard with two RS-485 ports (P2 and P3) and an optional LoRa wireless
port (P4). All setup parameters such as Baudrate, Data Bits, Parity, Stop Bits, IP Port and Timeout
can be configured here to match the settings of the downstream RS-485 devices. Please be reminded
that the IP Port number of the Serial Gateway feature for P2 (default = 20001) and P3 (default =
20002) should be different. Click Save to confirm your changes. The following table shows the setup
parameters for P2, P3 and P4. Most setup parameters are basic and self-explanatory.
Please note that the Packet Timeout (s) parameter refers to the timeout setting for the IP connection
instead of the serial or LoRa connection, meaning that the IP connection will be closed if there are no

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activities between the application software and the PMC-1302-3 ESG for the specified amount of
time. This is to prevent a potential lock up of the IP connection at the PMC-1302-3 ESG if the
application software fails to close the IP connection for some unknown reasons. It is recommended
that the default Packet Timeout of 300 seconds be used.
Figure 4-6 Serial Port & LoRa Settings
Parameters
Options/Default*
Parameters
Options/Default*
P2 (RS-485)
Baudrate
1200 to 38400 bps, 9600*
Data Bits
8
Parity
None, Even*, Odd
Stop Bits
1
Packet Timeout(s)
0 to 60,000s, 300s*
Byte Timeout(ms)
0 to 60,000ms, 20ms*
Mode
TCP Sever, TCP Client
If the Mode is set to TCP Server, only the IP Port appears.
Please note that the TCP Client function is reserved for future applications so its setup
parameters will not be discussed here.
IP Port
1 to 60000, 20001*
P3 (RS-485)
Baudrate
1200 to 38400 bps, 9600*
Data Bits
8
Parity
None, Even*, Odd
Stop Bits
1
Packet Timeout(s)
0 to 60,000s, 300s*
Byte Timeout(ms)
0 to 60,000ms, 20ms*
Mode
TCP Sever, TCP Client
If the Mode is set to TCP Server, only the IP Port setting appears.
Please note that the TCP Client function is reserved for future applications so its setup
parameters will not be discussed here.
IP Port
1 to 60000, 20002*
P4 (LoRa)
The LoRa parameters only appear when the device is equipped with the corresponding option.
Region
EU863-870
IN865-867
AU915-928
AS923-925*
RU864-870
US902-928
AS920-923
Custom
Channel
See Table 4-2
CH0 (923.00MHz)*
Baudrate
1200*, 3800, 7500 bps
Data Bits
8
Parity
None, Even*, Odd
Stop Bits
1
Packet Timeout(s)
0 to 60,000s, 300s*
Byte Timeout(ms)
0 to 60,000ms, 20ms*
Mode
TCP Sever, TCP Client
The following parameters only appear when the Mode is set to TCP Client.
Please note that the TCP Client function is reserved for future applications so its setup
parameters will not be discussed here.
IP Port
1 to 60000, 20003*
Table 4-1 Serial Port & LoRa Settings

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Region
EU
863-870
RU
864-870
IN
865-867
US
902-928
AU
915-928
AS
920-923
AS
923-925
Custom
(Default)
Channel 0
863.00
864.00
865.00
902.00
915.00
920.00
923.00
915.00
Channel 1
863.47
864.41
865.33
903.73
915.87
920.33
923.29
915.33
Channel 2
863.93
864.81
865.66
905.47
916.73
920.66
923.57
915.66
Channel 3
864.40
865.21
865.99
907.20
917.60
920.99
923.86
915.99
Channel 4
864.87
865.61
866.32
908.93
918.47
921.32
924.14
916.32
Channel 5
865.34
866.01
866.65
910.67
919.34
921.65
924.43
916.65
Channel 6
865.80
866.40
866.98
912.40
920.20
921.98
924.71
916.98
Channel 7
866.27
866.80
867.31
914.13
921.07
922.31
924.99
917.31
Channel 8
866.74
867.20
867.64
915.86
921.94
922.64
920.10
917.64
Channel 9
867.20
867.60
867.97
917.60
922.80
922.97
920.46
917.97
Channel 10
867.67
867.99
868.30
919.33
923.67
923.30
920.82
918.30
Channel 11
868.14
868.39
868.63
921.06
924.54
923.63
921.18
918.63
Channel 12
868.60
868.79
868.96
922.80
925.40
923.96
921.54
918.96
Channel 13
869.07
869.19
869.29
924.53
926.27
924.29
921.91
919.29
Channel 14
869.54
869.59
869.62
926.26
927.14
924.62
922.27
919.62
Channel 15
869.99
869.99
869.95
927.99
927.99
924.95
922.63
919.95
Table 4-2 16 Channel Assignments
If Region is set as Custom, the LoRa Custom Channels (xxx.xx MHz) setup parameters will appear to
allow the frequencies for the 16 channels to be customized as shown below:
Figure 4-7 LoRa Custom Channel Settings
Notes:
For the LoRa Custom Channels (xxx.xx MHz):
1) The valid range of Frequency is: 860.00-935.00MHz. Otherwise, the error message “Channel x:
Invalid value. Please specify a frequency between 860.00 and 935.00” would be shown.
2) Up to two decimals can be entered.
3) The channel frequency assignment must be unique. Otherwise, the error message “Channel x:
Duplicate frequency. Please enter another value.” would be shown.
Channel

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4.4 Change Password
Click Change Password on the left-hand pane and the following screen appears on the right-hand
pane where the Username and Password can be changed. Click Save to save your changes.
Figure 4-8 Change Password Screen
4.5 Device Information
Click Device Information on the left-hand pane and the following screen appears on the right-hand
pane, which includes Model and Information of the PMC-1302-3.
Figure 4-9 Device Information Screen
4.6 Exit
Click the Quit button near the top right-hand corner to exit the Web Console. For example, at the
Device Information page, click Quit and then Confirm to exit when the dialog box appears.
Figure 4-10 Quit at the Device Information Screen

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4.7 Reboot
Configuration changes will not take effect until the Reboot operation has been executed. Click
Reboot on the left-hand pane and the following screen appears on the right-hand pane. Click the
Reboot button to initiate the restart sequence. After restart, the user needs to log in again to access
to the PMC-1302-3 ESG’s Web Console.
Figure 4-11 Reboot Screen

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Chapter 5 Communications through the PMC-1302-3 ESG
This section provides details on how to communicate with a PMC-660 meter (Unit ID = 100) via the
PMC-1302-3 ESG.
5.1 Topological Graph
In this example, a PMC-1302-3 ESG without the LoRa option with the P2 port is used. The default IP
address for P1 is 192.168.0.127.
Figure 5-1 Topological Graph
5.2 Configuring the PMC-1302-3 ESG
To configure the PMC-1302-3 ESG, the user can log on to its Web Console page via the Internet
Explorer by entering the IP address of the PMC-1302-3 ESG’s Ethernet port in the browser’s address
bar. For example, type http://192.168.0.127/ at the address bar and then press <Enter>. Enter the
default user name “user”, the default password “123456” and then click Login to open the
PMC-1302-3 ESG’s Web Console.
Figure 5-2 Login Interface
In this example, P2 of the PMC-1302-3 ESG is used. The PMC-660’s serial port has been configured
with the following parameters:
1. Baud rate = 9600
2. Data Bits = 8
3. Parity = Even
4. Stop Bits = 1
5. Mode = TCP Server
6. IP Port = 20001

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It is important for the communications parameters of the PMC-1302-3 ESG’s P2 to be programmed to
match those of the PMC-660. The IP Port Number for P2 is 20001.
Figure 5-3 P2’s Setting
After the P2 settings of the PMC-1302-3 ESG has been correctly configured, click Reboot on the
left-hand pane and then click the Reboot button on the right-hand pane to save the settings. The
PMC-1302-3 ESG will perform a reboot operation with the new configuration. When the Log-In page
returns, the PMC-1302-3 ESG is now ready.
Figure 5-4 Reboot Page
5.3 Configuring PecStar iEMS
In PecStar iEMS’s PecConfig interface, select Site 1 on the left-hand pane and then click on the
Properties icon to bring up the Site Properties dialog box.
Figure 5-5 Systemconfig Interface
In this example, P1 of the PMC-1302-3 ESG is used, and Site 1 has been configured with the following
parameters:
1. Drive Type = MODBUS Protocol Master Site Driver
2. Polling Mode = Serial
3. Port Type = Ethernet
4. IP = 192.168.0.127
5. Port = 20001 (for P2 of PMC-1302-3 ESG)

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Figure 5-6 Site Node Properties
Select PMC-660 on the right-hand pane under the Device Name column and then click the
Properties icon on the Tool Bar to bring up the Device Properties dialog box. Change Device Type to
PMC-660, Comm ID to 100 and then click OK to save and exit the dialog box.
Figure 5-7 Device Node Properties
Right click on PMC-660 on the left-hand pane, click Import SNF file and select the appropriate SNF
file from the pop-up dialog box.
Figure 5-7 Import SNF File
Click the Save icon on the Tool Bar to save the current configuration into PecStar iEMS’s database.
The PecStar iEMS software is now ready to communicate with the PMC-660 via P2 of the PMC-1302-3
ESG.

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Appendix A - Technical Specifications
Communication
Ethernet Port (P1)
Protocol
RS-485 (P2, P3)
Baudrate
LoRa (Optional)
RF Range
ISM Bands
RF Output Power
Receiver Sensitivity
Output Watts
FCC Part 15C
10/100 Mbps
TCP, UDP, HTTP
1200/2400/4800/9600/19200/38400 bps
860-935 MHz
EU863-870, RU864-870, IN865-867, US902-928, AU915-928,
AS920-923 and AS923-925
19 dBm (Maximum)
-137 dBm (Maximum)
0.03 (Typical)
Certified by TCB
Front Panel LED Indicators
Run (Green)
Blinking - System is running normally
Data (Yellow)
Blinking - LoRa is receiving or transmitting data
P2, P3 (Green)
Blinking - Receiving activity
P2, P3 (Yellow)
Blinking - Transmitting activity
Power Supply (L/+, N/-)
Standard
Burden
95-250VAC/DC, 47-440Hz
<3W
Protection
ESD Protection
Isolation Protection
8kV
3kV for RS-485
1.5kV for Ethernet Port
Environmental Conditions
Operating Temp.
Storage Temp.
Humidity
Atmospheric pressure
-25°C to +70°C
-40°C to +85°C
5% to 95% non-condensing
70kPa to 110kPa
Mechanical Characteristics
Unit Dimensions
Shipping Weight
Shipping Dimensions
Mounting
IP Rating
72x65x95mm
TBD
TBD
DIN Rail
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Appendix B - Standards Compliance
Safety Requirements
Insulation
Dielectric Test
Insulation Resistance
Impulse Voltage
EN61010-1: 2010
EN61010-2-030: 2010
2kV @ 1 minute
>100MΩ
5kV, 1.2/50µs
Electromagnetic Compatibility
CE EMC Directive 2014 / 30 / EU (EN 61326: 2013)
Electrostatic Discharge
EN 61000-4-2: 2009
Radiated Fields
EN 61000-4-3: 2006+A1: 2008+A2: 2010
Fast Transients
EN 61000‐4‐4: 2012
Surges
EN 61000‐4‐5: 2014+A1: 2017
Conducted Disturbances
EN 61000‐4‐6: 2014
Magnetic Fields
EN 61000‐4‐8: 2010
Voltage Dips and Interruptions
EN 61000-4-11: 2004+A1: 2017
Emission Tests
Limits and Methods of Measurement of
Electromagnetic Disturbance Characteristics of
Industrial, Scientific and Medical (ISM)
Radio-Frequency Equipment
EN 55011: 2016
Electromagnetic Compatibility of Multimedia
Equipment - Emission Requirements
EN 55032: 2015
Limits for Harmonic Current Emissions for
Equipment with Rated Current ≤16 A
EN 61000-3-2: 2014
Limitation Of Voltage Fluctuations And Flicker In
Low-Voltage Supply Systems For Equipment With
Rated Current ≤16 A
EN 61000-3-3: 2013
Emission Standard for Residential, Commercial and
Light-Industrial Environments
EN 61000-6-4: 2007+A1: 2011
Mechanical Tests
Spring Hammer Test
IEC 62052-11: 2003
Vibration Test
IEC 62052-11: 2003
Shock Test
IEC 62052-11: 2003

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Appendix C - Ordering Guide