PMM PMM0501 User manual

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X86 BASED EMBEDDED INDUSTRIAL COMPUTER
Business and Mission-
Critical Solutions Provider
User Manual
Ethernet - Serial Media Converter
Model: PMM0501
Document:User Manual
Document version: 1.4
Date: September 2023

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COPYRIGHT NOTICE
The information in this document is subject to change without prior notice
to improve reliability, design, and function and does not represent a
commitment on the part of the manufacturer.
In no event will the manufacturer be liable for direct, indirect, special,
incidental, or consequential damage arising out of the use or inability to
use the product or documentation, even if advised of the possibility of such
damages.
This document contains proprietary information protected by copyright.
All rights are reserved. No part of this manual may be reproduced by any
mechanical, electronic, or other means in any form without prior written
permission of the manufacturer.
TRADEMARKS
All registered trademarks and product names mentioned herein are used
for identification purposes only and may be trademarks and/or registered
trademarks of their respective owners.
AMI is a trademark of American Megatrends Inc.
Intel & Atom are trademarks of Intel Corporation
IBM, PC/AT, PS/2&VGA are trademarks of International Business Machines
Corporation Microsoft Windows is a trademark of Microsoft Corp. RTL is
the trademark of Realtek Semiconductor Co., Ltd.
DECLARATION OF CONFORMITY
This restriction is subject to protect the operational process of the
system in the business environment, which will produce, use, and
transmit radiofrequency energy. Harmful interference to radio
communication could result if instructions to the correct installation and
usage were not applied. The interference prevention cannot be
guaranteed even with proper installation according to the manual. If the
device causes a bad effect on the radio / TV signal. The user could
preclude that by turning the device on/off.
When this device produces some harmful interference, the user can use
the following measure to solve the interference problem:
1-Setting the receiving antenna’s direction or location to increase the
distance between this device and receiver.
2-Plug in the device’s power connector into different circuits of the
power outlet with the receiver.
3-If any technical support is needed, the dealer or experienced radio/TV
technical personnel must be informed.
TECHNICAL SUPPORT AND SERVICE
Visit Pmm-usa.us to browse FAQs and get further details.
User should collect the following information before submitting
technical support and service requests:
- Product name, model and serial number.
- Installed software (operating system, OS version, installed applications
and so on).
- Full description of the problem
-Detailed information about every error.
SAFETY INSTRUCTIONS
Only trained and qualified personnel can install, operate, or
maintain the device.
Before starting the installation, all safety precautions must be
read, and warning labels affixed to the device must be observed.
Doing so protects the device from damage and ensures your
safety.
Safety precautions provided in this document may not cover all
safety aspects, note to always remain mindful of safety.
PMM is not liable for any consequence that results from violation
of regulations pertaining to safe operations or safety codes
pertaining to design, production, and equipment usage.
DO NOT use liquids or decontamination spray to clean the device
surface and assure that it is totally disconnected while cleaning.
Take all measures to prevent device drop before or during
installation.
Prior to connecting the device to power source, ensure the
source and device voltage and power are 100% matched.
Keep the cables in a suitable covered place.
If the device is not used for a long time, shut off the power to
avoid the damages by transient overvoltage.
DO NOT allow any liquid flow into the device; to avoid fire or
short circuit.
The recommended storage temperature range should NOT be
less than 30°C OR higher than 85°C.
Warning:
Read the power source and device inlet carefully.
Handle device with both hands.
Clean and maintain the device using recommended, safe and
suitable methods.
Caution:
If any unauthorized changes of settings or repairs are done without
PMM approval; then user’s rights of controlling this device will be
canceled.

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Contents
1. INTRODUCTION................................................................................................................................................. 4
1.1 Description.................................................................................................................................................... 4
1.2 Key Features.................................................................................................................................................. 4
2. HARDWARE....................................................................................................................................................... 5
2.1 Enclosure Dimensions................................................................................................................................... 5
2.2 LED Indicators ............................................................................................................................................... 5
2.3 Technical Specifications................................................................................................................................ 6
3. PIN Assignments ............................................................................................................................................... 6
4. HARDWARE CONNECTION................................................................................................................................ 7
4.1 Connecting Power......................................................................................................................................... 7
4.2 Connecting a Serial Device............................................................................................................................ 7
4.3 Connecting to a Host or the Network........................................................................................................... 7
5. TARGET APPLICATIONS ..................................................................................................................................... 7
6. PMM0501 Easy Config...................................................................................................................................... 8
6.1 log In.............................................................................................................................................................. 8
6.2 Home Page.................................................................................................................................................... 9
6.3 Ethernet Configuration ................................................................................................................................. 9
6.4 Serial Configuration .................................................................................................................................... 10
6.5 Operation Mode ......................................................................................................................................... 11
PAGE

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1. INTRODUCTION
1.1 Description
1.2 Key Features
Converts smoothly Between Ethernet to serial Rs485 (bridge)
Up to 4 simultaneous Ethernet masters
Can be used as Modbus converter through using any port forwarder software
Effortless configuration via web-based server
2 or 4 serial Rs485 ports options
Baud rate: up to 115200 Kbs
Operating temperature: -40 to 75°C (-40 to 167°F)
EMI, EMS, EMC and shock protected
10-56VDC Supply voltage with Overvoltage and reverse polarity protection
Serial port with power surge ±2.5kV and isolation protection
PMM0501 hardware provides the flexibility needed to fulfill the various conditions that arise with
field devices that use different communication protocols to connect any type of industrial solution
network such as the SCADA system. This slave device is effortlessly incorporated into an existing Modbus
TCP network from any Modbus RTU device.
PMM0501 industrial grade media converter can function under harsh environmental conditions of
any site. It is especially designed to meet all power substations and PV plants requirements. Furthermore,
it covers all field standards of power, reliability, easy configuration and long- lasting life.
This Document is a fully descriptive operational manual for PMM’s Ethernet - Serial Media Converter.
Providing the operator with the needed information in terms of instruction and screen layout of the
monitors, allowing for easy use.

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2. HARDWARE
2.1 Enclosure Dimensions
2.2 LED Indicators
PMM0501 has 2x Green LED Indicators at the front view as following:
LED INDICATOR
Rx
Blinking: Data is being transmitted or received through the port
Off: No Data is being transmitted or received through the port
Tx
Blinking: Data is being transmitted or received through the port
Off: No Data is being transmitted or received through the port

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2.3 Technical Specifications
Interfaces
3. PIN Assignments
3.
Serial
2 or 4 customized Serial ports of the following options:
Isolated RSR85 port
Isolated RS422 port
Isolated RS232 port
Ethernet
1x 10/100/1000Base-T RJ45
LED Indicators
2x LED for full duplex
Power Parameters
Input Power Supply Options
10-48 VAC / 10-60 VDC
Physical Characteristics
Housing
Plastic
Dimensions
4.05 x 4.05 x 1.45 inch (103 x 103 x 36.83 mm)
Mounting Options
DIN Rail
1. D- (RS485)
2. D+ (RS485)
3. Earth
4. Earth
5. V DC+ (9-56)
6. V DC- (9-56)
7. Earth
8. Earth
1. D+ (RS485)
2. Earth
3. D- (RS485)
4. Earth

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4. HARDWARE CONNECTION
4.1 Connecting Power
PMM0501 has two power supply options 10-60V DC or 10-40 V AC, the user has to connect the positive
power line (+) to pin no.5 in the top view and the negative line (-) to pin no.6 as illustrated in the pin’s assignments.
Note: the power is protected against overvoltage and reverse polarity in case of wrong connection.
4.2 Connecting a Serial Device
The unit’s serial port is located on the top panel. If you are connecting an RS485 multidrop network with
multiple devices, note the following:
1. All devices that are connected to a single serial port must use the same protocol (i.e., either Modbus RTU or
Modbus ASCII).
2. Connect the D+ with pin no.1 and D- with pin no.2 and Earth with pin no.4 as illustrated in the pin’s
assignments to complete the connection successfully.
3. Turn on the dip switch to have 120 Ω termination resistor between the D+ and D- lines. Refer hardware
configuration section.
4.3 Connecting to a Host or the Network
There is a 10/100 Ethernet port at the unit’s front panel. This port is used to connect the unit with a
host or Ethernet network.
5. TARGET APPLICATIONS
Link a serial master device with Ethernet slave devices
Many HMI (Human Machine Interface) systems use a serial interface to connect to DCS (Discrete
Control System). However, many DCSs are now Ethernet-based and operate as a Modbus TCP slave device.
PMM0501 can link serial HMI to distributed DCSs over an Ethernet network.
Let Modbus serial devices communicate over the Internet
Many Modbus devices communicate over RS-485, which limits the number of devices in a network to
32 and the transmission distance to 1.2 km. With PMM0501 Modbus gateway, you can link all Modbus
devices over an Ethernet network. Up to 32 Modbus gateways can be installed in a single control network,
so each device can now be accessed from anywhere the TCP/IP network can reach.

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Serial Redirector
PMM0501 can be inserted to a serial system in which the slaves connected to one serial port and the
masters to another serial port. PMM0501 allows Ethernet master devices to connect with serial slaves and
simultaneously provides a serial redirector which allows the serial master to continue controlling the serial
slaves.
6. PMM0501 Easy Config
PMM Easy config enables the user to set PMM0501 settings easily and effortlessly and control them
any time, the user can upload the settings that the device is running by, change them as suitable then
download the updated settings on the main controller again.
6.1 log In

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6.2 Home Page
This page provides the user with the basic information about the PMM device “Ethernet -Serial Media
Converter”such as Model Name, Serial Number, Firmware Version, Current IP Address and Number of Serial
ports.
6.3 Ethernet Configuration
Ethernet configuration parameters:
IP address: it uniquely identifies each device on the network and devices use it to communicate with each
other, default IP address is set to 192.168.1.200.

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Net Mask: identifies an octet in the IP address which is part of the subnet address (network address). Using
Net Mask, we know which part of IP address the network address and which part is the host address.
Preferred DNS: to provide the IP address of a DNS server (DNS 1) so that we can use logical names on our
network.
Alternate DNS.
Gateway: To allow a host to communicate with computers on different subnets we must define the Gateway
address.
MAC Address.
UDP Port.
6.4 Serial Configuration
Serial configuration parameters:
Check the Enabled box.
Select the needed serial port to be configurator from the drop list; there are 4 serial ports.
Note: Serial 00 is the Ethernet port, and Serial 01,02,03 are the RS485 ports.
Baud Rate: The baud rate is the communication speed, which is the number of times per second a serial
communication signal changes states; a state being either a voltage level, a frequency, or a frequency phase
angle.
Data Bit: Number of bits to represent one character of data 8 (default).
Stop Bit: The stop bits are used in asynchronous communication as a means of timing or synchronizing the
data characters being transmitted.
Parity: The parity bit is to determine if the data character being transmitted is correctly received by the
remote device. Interface: Serial communication.
Interface.
Port ID (must be from 1-30).