CET PMC-1304-3 User manual

PMC-1304-3
Communications Processor
User Manual
Version: V1.0
July 26, 2016
Ceiec Electric Technology

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This manual may not be reproduced in whole or in part by any means without the express
written permission from Ceiec 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 the latest product specifications.

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DANGER
Failure to observe the following instructions may result in severe injury or
death and/or equipment damage.
Before connecting the device to the power source, check the label of the device
to ensure that it is equipped with the appropriate power supply.
Under no circumstances should the device be connected to a power source if it
is damaged.
Make sure the device is mounted to a well-grounded mounting surface.
To prevent potential fire or shock hazard, do not expose the device to rain or
moisture.
DO NOT open or repair the device under any circumstances, unless it is
clearly specified in the manual.

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Limited warranty

Ceiec 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
Table of Contents ..................................................................................................................................... 5
Chapter 1 Introduction ............................................................................................................................ 7
1.1 Overview ..............................................................................................................................7
1.2 Features................................................................................................................................7
1.3 Typical Applications...............................................................................................................8
1.3.1 Single Networking ......................................................................................................8
1.3.2 Dual Networking ........................................................................................................9
1.4 Getting more information ................................................................................................... 11
Chapter 2 Installation ............................................................................................................................12
2.1 Appearance ........................................................................................................................ 12
2.2 Unit Dimension ...................................................................................................................12
2.3 Mounting............................................................................................................................12
2.4 Power Supply Wiring........................................................................................................... 13
2.5 Chassis Ground Wiring ........................................................................................................14
2.6 Ethernet Port Wiring........................................................................................................... 14
2.6.1 Straight through Connection .................................................................................... 14
2.6.2 Cross-over Connection .............................................................................................15
2.7 Serial Port Wiring................................................................................................................ 15
2.7.1 P3 (RS-422/485) Wiring ............................................................................................. 15
2.7.2 P4/P5/P6 (RS485) Wiring...........................................................................................16
Chapter 3 Operating the PMC-1304-3 ...................................................................................................17
3.1 LED Indicators ..................................................................................................................... 17
3.2 Reset Button ....................................................................................................................... 17
Chapter 4 Configuring the PMC-1304-3 via the Web Console.............................................................. 18
4.1 On-line Web Console Login .................................................................................................18
4.2 Off-line Web Console Login ................................................................................................. 20
4.3 Web Interface .....................................................................................................................21
4.3.1 Device Settings......................................................................................................... 21
4.3.2 Channel Management ..............................................................................................24
4.3.3 Data Cache Management ......................................................................................... 31
4.3.4 System Maintenance ................................................................................................ 35
Chapter 5 Modbus Register Map........................................................................................................... 40
5.1 Analog Input Register .......................................................................................................... 40
5.2 Digital Input Register........................................................................................................... 40
5.3 Energy Register ...................................................................................................................41
5.4 Remote Control................................................................................................................... 41
5.5 SOE.....................................................................................................................................41
5.6 Time ................................................................................................................................... 42
5.7 Data Recorder Log............................................................................................................... 42
5.8 Historic SOE Log .................................................................................................................. 43
5.9 WFR Log .............................................................................................................................44
5.10 Device Information............................................................................................................ 45

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Appendix A Technical Specifications ..................................................................................................... 47
Appendix B Standards Compliance ....................................................................................................... 49
Appendix C Ordering Guide ...................................................................................................................50
Contact us .............................................................................................................................................. 51

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Chapter 1 Introduction
This manual explains how to use the PMC-1304-3 Communications Processor. Throughout the
manual the term “PMC-1304-3” generally refers to all models. Differences between models are
indicated with the appropriate model number.
This chapter provides an overview of the PMC-1304-3 Communications Processor and summarizes
many of its key features.
1.1 Overview
The PMC-1304-3 is the ideal embedded equipment for connecting RS-422 or RS-485 enabled serial
devices to an IP-based LAN, making it possible for SCADA or other applications to access serial devices
over a LAN for monitoring and control applications. The PMC-1304-3 has been specifically designed
with industrial automation in mind and therefore provides un-surpassed performance and reliability
under the harshest industrial environments. The basic Model, PMC-1304-3-T, provides Modbus
Gateway function from Modbus TCP to RTU and supports interrogation from multiple Modbus
Masters. The optional RTU Model, PMC-1304-3-R, provides Modbus Mastering capability with local
data caching and logging to enhance overall system performance and redundancy. Not only does the
RTU Model support the polling of Real-Time data, it also supports the uploading of Data Logs, Event
Logs and Waveform Logs for CET devices that provide these advanced capabilities.
The PMC-1304-3 comes with Tx/Rx LEDs for the serial ports on the front panel. The LEDs not only
indicate the network status but also help to monitor the communications activities of the attached
serial devices.
The PMC-1304-3 can be setup through its user-friendly web console.
1.2 Features
Dual 10/100BaseT (RJ45)
Standard 2Xrs-485, optional 4Xrs-485
Basic Model
Modbus Gateway function for 32 Slave IEDs per RS-485 or a maximum of 128 Slave IEDs per
device
RTU Model
Modbus Mastering, Local Data Caching and logging for 64 Slave IEDs per RS-485 port or 256
Slave IEDs per device for a maximum of 25,600 data points.
2GB On-Board Log Memory, sufficient for storing data @ 60-minute interval for 900 days
Scheduled uploading of Data Log in CSV format to an external FTP Server
The PMC-1304-3 is designed to withstand the harshest industrial environments
15kV (contactless) & 6kV (contact) ESD protection and 3kV isolation protection for all Serial
signals
1.5kV isolation protection for Ethernet ports
Simple port configuration via its built-in web interface
DIN-Rail or Surface Mounting

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Models and Functions
Supported
1.3 Typical Applications
The PMC-1304-3 is an ideal instrument to connect serial devices to an IP based Ethernet LAN for any
industrial automation systems that require insulation protection as well as high reliability. With its
built-in dual Ethernet ports, the PMC-1304-3 is capable of operating under a Single Networking or
Dual Networking architecture.
1.3.1 Modbus TCP to RTU Gateway
The PMC-1304-3 supports the Modbus TCP to RTU Gateway function that makes it extremely simple
for any Modbus TCP Master Application to interface with Modbus RTU enabled IEDs over a local area
network. A simple web-based interface allows the users to easily configure the TCP to RTU address
mapping as well as which downstream RS-485 port the Slave IEDs are located.
Notes for Basic Model:
32 Slave IEDs per RS-485 port or a maximum of 128 Slave IEDs per device
4 Modbus Masters per device
Figure 1-1 Modbus RTU to TCP Gateway
Functions
PMC-1304-3 Models
T
RTU
Modbus Gateway


Data collecting and Transmission


Local Data Logging

Data Storing

FTP/Uploading CSV Files

Offline Configuration

Online Configuration


Online Debugging


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1.3.2 Multiple Modbus TCP Masters Support
The PMC-1304-3 supports multiple Modbus TCP Master simultaneously to facilitate information
sharing while minimizing the implementation cost. For highly data or communication intensive
applications. The RTU Model is recommended.
Notes for RTU Moles:
64 Slave IEDs per RS-485 port or a maximum of 256 Slave IEDs per device
16 Modbus Masters per device
Figure 1-2 One PMC-1304-3 Serving 3 Modbus Masters Simultaneous
1.3.3 Data Logging
The RTU Model supports embedded Modbus RTU mastering as well as Local Data Caching and Data
Logging of real-time parameters from Slave IEDs for a maximum of 25,600 data points. The device
can be configured to perform data logging from 1-minute to 60-minute intervals. With its large
on-board non-volatile Log Memory, the device is capable of storing interval. These features enhance
the overall system performance and reliability, reduce the CPU loading of the Head-End applications
such as EMS, BMS or SCADA and provide an extra level of data redundancy for IEDs without any
on-board memory.

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Figure 1-3 Multi-site Data Collection through 3G/4G Modems
In addition, the RTU Model may be deployed as a stand-alone Data Logger without any Head-End
systems in a Local Area Network or in remote locations when it’s paired with an external 3G/4G
modem. The RTU Model’s FTP allows manual access and uploading of historical information in
zipped CSV format. This versatile function allows users to perform simple data logging of Slave IEDs
locally or remotely without any expensive software.
Not only does the RTU Model support Modbus Slave Devices from CET, it can also support the Modbus
RTU Mastering of practically and 3rd party Modbus IEDs with customized device drivers.
Figure 1-4 Stand-alone Data Logger Application
1.3.4 FTP Client Support
The RTU Model can be configured as an FTP Client to push the most recent data log files in CSV format
to an external FTP Server over an intranet or internet at pre-determined intervals from hourly to
weekly. This is especially useful for distributed or remote Energy Management applications where
real-time data update is not required. The log files will be deposited at the FTP Server at scheduled
intervals which can then be processed by 3rd party applications.