Moxa Technologies MGate 4101-MB-PBS User manual

MGate-4101-MB-PBS
Modbus Serial-to-PROFIBUS
Slave Gateway User’s Manual
First Edition, October 2011
www.moxa.com/product
© 2011 Moxa Inc. All rights reserved.

MGate-4101-MB-PBS
Modbus Serial-to-PROFIBUS
Slave Gateway User’s Manual
The software described in this manual is furnished under a license agreement and may be used only in accordance with
the terms of that agreement.
Copyright Notice
© 2011 Moxa Inc. All rights reserved.
Trademarks
The MOXA logo is a registered trademark of Moxa Inc.
All other trademarks or registered marks in this manual belong to their respective manufacturers.
Disclaimer
Information in this document is subject to change without notice and does not represent a commitment on the part of
Moxa.
Moxa provides this document as is, without warranty of any kind, either expressed or implied, including, but not limited
to, its particular purpose. Moxa reserves the right to make improvements and/or changes to this manual, or to the
products and/or the programs described in this manual, at any time.
Information provided in this manual is intended to be accurate and reliable. However, Moxa 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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Table of Contents
1. Introduction...................................................................................................................................... 1-1
Overview ...........................................................................................................................................1-2
Package Checklist ...............................................................................................................................1-2
Product Features ................................................................................................................................1-2
2. Getting Started.................................................................................................................................. 2-1
Connecting Power ...............................................................................................................................2-2
Connecting PROFIBUS Devices .............................................................................................................2-2
Connecting Modbus Serial Devices ........................................................................................................2-2
Connecting to a Host via Serial Console Cable ........................................................................................2-2
3. Hardware .......................................................................................................................................... 3-1
Function Block.................................................................................................................................... 3-2
Power Input and Relay Output Pinouts...................................................................................................3-2
LED Indicators....................................................................................................................................3-2
Dimensions ........................................................................................................................................3-3
Pin Assignments .................................................................................................................................3-3
Mounting the Unit ...............................................................................................................................3-4
Specifications .....................................................................................................................................3-5
Adjustable Pull High/Low Resistors for the Modbus Port (P1) in RS-485 Mode .............................................3-6
Reset Button ......................................................................................................................................3-6
Rotary Switch..................................................................................................................................... 3-7
4. Configuration .................................................................................................................................... 4-1
Installing the Software ........................................................................................................................4-2
Starting MGate Manager ...................................................................................................................... 4-6
Connecting to the Unit.........................................................................................................................4-7
Modifying the Configuration ............................................................................................................... 4-10
Configure Device ....................................................................................................................... 4-11
Configure Modbus Settings ......................................................................................................... 4-12
Set up PROFIBUS ...................................................................................................................... 4-13
IO Mapping Setup ..................................................................................................................... 4-14
QuickLink ................................................................................................................................. 4-17
IO Map..................................................................................................................................... 4-19
Load Default ............................................................................................................................. 4-22
Monitoring Modbus Activity ......................................................................................................... 4-23
Diagnose.................................................................................................................................. 4-26
Upgrading Firmware.......................................................................................................................... 4-28
Import/Export .................................................................................................................................. 4-29
A. Quick Configuration .......................................................................................................................... A-1
Typical Applications.............................................................................................................................A-2
Quick Configuration Steps....................................................................................................................A-3
PROFIBUS Overview............................................................................................................................A-3
Modbus Overview ...............................................................................................................................A-4
Diagnose Packet Format ......................................................................................................................A-6

1
1. Introduction
Welcome to the MGate 4101-MB-PBS line of Modbus to PROFIBUS gateways. All models feature easy protocol
conversion from Modbus to PROFIBUS, and RS-232/422/485 port for Modbus communication.
This chapter is an introduction to the MGate 4101-MB-PBS and includes the following sections:

Overview

Package Checklist

Product Features

MGate 4101-MB-PBS UM Introduction
1-2
Overview
The MGate 4101-MB-PBS is a line of protocol gateways that provides users with the following features:
Protocol conversion between Modbus and PROFIBUS
MGate 4101-MB-PBS series products can be used to connect Modbus devices and PROFIBUS devices to provide
PLCs (ex. Siemens S400, S300) with remote maintenance capability.
Windows utilities for easy setup and traffic monitoring
A Windows utility is provided to make configuration and operation of the MGate 4101-MB-PBS as easy as
possible. The utility uses serial console port to connect MGate 4101-MB-PBS unit. Besides, Wizard functions can
help you finish configuration in only several minutes by automatic commands detection and automatic memory
mapping.
Package Checklist
All models of the MGate 4101-MB-PBS series are shipped with the following items:
Standard Accessories:
•1 MGate 4101-MB-PBS Modbus Serial-to-PROFIBUS Slave Gateway.
•Documentation & Software CD.
•Quick Installation Guide.
•Product warranty statement.
•RJ45 to DB9 cable (for console use)
Optional Accessories:
•DR-4524: 45W/2A DIN-rail 24 VDC power supply with universal 85 to 264 VAC input.
•DR-75-24: 75W/3.2A DIN-rail 24 VDC power supply with universal 85 to 264 VAC input.
•DR-120-24: 120W/5A DIN-rail 24 VDC power supply with 88 to 132 VAC/176 to 264 VAC input by switch.
•WK-36-01: Wall mounting kit
Note: Notify your sales representative if any of the above items is missing or damaged.
Product Features
•Automatic Windows configuration utility.
•Redundant dual DC power inputs
•Enhanced surge protection for serial and power
•2 KV isolation for serial signals
•PROFIBUS connector to connect the gateway to the field bus
•Power-off warning by relay output
•Software-selectable RS-232/422/485 communication.

2
2. Getting Started
The following topics are covered in this chapter:

Connecting Power

Connecting PROFIBUS Devices

Connecting Modbus Serial Devices

Connecting to a Host via Serial Console Cable

MGate 4101-MB-PBS UM Getting Started
2-2
Connecting Power
The unit can be powered using the AC adaptor or by connecting a power source to the terminal block,
depending on the model. The following instructions are for the AC adaptor:
1. Plug the connector of the power adapter into the DC-IN jack on the back of the unit.
2. Plug the power adapter into an electrical outlet.
Follow these instructions to connect a power source to the terminal block:
1. Loosen or remove the screws on the terminal block.
2. Connect the 12–48 VDC power line to the terminal block.
3. Tighten the connections using the screws on the terminal block.
Note that the unit does not have an on/off switch. It automatically turns on when it receives power. The PWR
LED on the top panel will glow to indicate that the unit is receiving power. For power terminal block pin
assignments, please refer to the hardware reference chapter for your model.
Connecting PROFIBUS Devices
The unit’s PROFIBUS port(s) are located on the front panel. Use a PROFIBUS cable to directly connect the unit
to a PROFIBUS PLC or other PROFIBUS master.
For the PROFIBUS port pin assignments, please refer to Chapter 3. This information can then be used to
construct your own PROFIBUS cable.
Connecting Modbus Serial Devices
The unit’s Modbus port(s) are located on the front panel. Use a Modbus cable to directly connect the unit to a
Modbus RTU/ASCII device.
For the Modbus port pin assignments, please refer to Chapter 3. This information can then be used to construct
your own Modbus cable.
Connecting to a Host via Serial Console Cable
A RS-232 serial console port is located on the unit’s front panel. This port is used for console configuration via
a CBL-RJ45-M9-150 RJ-45-to-DB9 cable.
For normal operation, use a standard straight-through RS-232 serial cable to connect the unit to your COM port.
You connect the unit directly to a PC. Besides, use a serial cable to connect the unit to your PC’s serial
connector.
The Tx/Rx LED of the console port will light up to indicate serial connection status when data is communicated
with each other.

3
3. Hardware
The following topics are covered in this chapter:

Function Block

Power Input and Relay Output Pinouts

LED Indicators

Dimensions

Pin Assignments

Mounting the Unit

Specifications

Adjustable Pull High/Low Resistors for the Modbus Port (P1) in RS-485 Mode

Reset Button

Rotary Switch

MGate 4101-MB-PBS UM Hardware
3-2
Function Block
Power Input and Relay Output Pinouts
V2+ V2- V1+ V1-
Shielded
Ground
DC Power
Input 2
DC Power
Input 2
Relay
output
Common
Relay
output
DC Power
Input 1
DC Power
Input 1
LED Indicators
LED
Color
Function
PWR1 Green Power is on.
Off Power is off.
PWR2 Green Power is on.
Off Power is off.
Ready Green Gateway is operational.
Red Gateway has wrong settings.
Off Power is off or fault condition exists.
P1 Tx/Rx (Modbus Serial) Green Serial device is transmitting data.
Orange Serial device is receiving data.
Off No data is flowing to or from the serial port.
P2 Status (PROFIBUS) Green Steady: Gateway is waiting for data exchanging.
Blinking: Data is exchanging.

MGate 4101-MB-PBS UM Hardware
3-3
Orange Steady: Error in Configuration.
Blinking: Error in Parameter data
Off PROFIBUS offline or Slave ID wrong.
Dimensions
Pin Assignments
Modbus P1 Pin Assignment
The MGate 4101-MB-PBS series use DB9 (male) serial port to connect to Modbus devices.
Pin RS-232 RS-422/
RS-485 (4W)
RS-485 (2W)
1 DCD TxD-(A) ---
2 RXD TxD+(B) ---
3 TXD RxD+(B) Data+(B)
4 DTR RxD-(A) Data-(A)
5 GND GND GND
6 DSR --- ---
7 RTS --- ---
8 CTS --- ---
9 --- --- ---
PROFIBUS P2 Pin Assignment
The MGate 4101-MB-PBS series use DB9 (female) serial port to connect to PROFIBUS devices.
PIN Signal Name
1 N.C.
2 N.C.
3 PROFIBUS D+
4 RTS
5 Signal common

MGate 4101-MB-PBS UM Hardware
3-4
6 5V
7 N.C.
8 PROFIBUS D-
9 N.C.
Console (RS-232) Pin Assignment
The MGate 4101-MB-PBS series use RJ45 serial port to connect to PC to configure device.
PIN RS-232
1 DTR
2 RTS
3 GND
4
TXD
5 RXD
6 DCD
7 CTS
8 DTR
Mounting the Unit
The unit can be mounted on the wall or mounted on a DIN-Rail. The MGate 4101-MB-PBS/4101I-MB-PBS series
is designed to be attached to a DIN-Rail or mounted on a wall. For DIN-Rail mounting, push down the spring
and properly attach it to the DIN-Rail until it “snaps” into place. For wall mounting, install the wall mount kit
(optional) first, and then screw the device onto the wall. The following figure illustrates the two mounting
options:

MGate 4101-MB-PBS UM Hardware
3-5
Specifications
Power Input
Input Voltage 12 to 48 VDC
Connector 8-pin terminal block (GND, V1+, V1-, Relay NC, Relay NC, V2+, V2-), screw mounting
Modbus Serial Interface
Protocol Modbus ASCII/RTU, Master/Slave
Number of Ports 1
Serial Standards RS-232/422/485, software selectable
Data Bits 7, 8
Stop Bits 1, 2
Parity None, Even, Odd, Space, Mark
Flow Control RTS/CTS, XON/XOFF
Baudrate 50 bps to 921.6 Kbps
Connector DB9 male
Serial Line Protection
ESD 15KV protection for all signals
Isolation 2KV protection (MGate 4101I-MB-PBS only)
RS-485 Data Direction Control ADDC® (automatic data direction control)
Pull High/Low Resistor for RS-485 1 KΩ, 150 KΩ (switchable)
Terminal Resister 120Ωfor RS-485
Modbus Function 1,2,3,4,5,6,15,16
Modbus Serial Signals
RS-232 TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS-422 Tx+, Tx-, Rx+, Rx-, GND
RS-485-4w Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w Data+, Data-, GND
PROFIBUS Interface
Protocol PROFIBUS DP-V0 Slave
Data rate 9600 bit/s, 19.2, 93.75, 187.5, 500 kbit/s, 1.5, 3, 6 and 12 Mbit/s
Connector DB9 female
Isolation Built-in 2 KV
DIP Switch for Termination
Rotary Switch PROFIBUS address 0~99 (address 100~125 supported by SW)
Console Interface RJ45 to DB9 cable
Utility
Driver Support Windows 2000/XP/2003/Vista/2008/7 x86/x64
Physical Characteristics
Housing Metal, IP30 protection
Dimensions 36 x 105 x 140 mm (1.42 x 4.13 x 5.51 in)
Environmental Limits
Operating Temperature
Standard Temp. Models 0 to 60°C (32 to 140°F)
Wide Temp. Models -40 to 75°C (-40 to 167°F)
Operating Humidity 5 to 95% RH
Storage Temperature -40 to 85°C (-40 to 185°F)
Regulatory Approvals
EMC CE (EN55022 Class A, EN55024), FCC Part 15 Subpart B Class A
Safety UL (UL60950-1), LVD (EN60950-1)
Reliability
Alert Tools Built-in buzzer and RTC (real-time clock)
MTBF 513,139 hours

MGate 4101-MB-PBS UM Hardware
3-6
Warranty 5 years
Adjustable Pull High/Low Resistors for the
Modbus Port (P1) in RS-485 Mode
SW 1 2 3
Pull High
Pull Low
Terminator
ON 1KΩ 1KΩ 120Ω
Default OFF 150Ω 150KΩ ---
In some critical environments, you may need to add termination resistors to prevent the reflection of serial
signals. When using termination resistors, it is important to set the pull high/low resistors correctly so that the
electrical signal is not corrupted. The MGate uses jumper settings or DIP switches to set the pull high/low
resistor values for each serial port.
To set the pull high/low resistors to 150 KΩ, make sure that the two jumpers assigned to the serial port
are not shorted by jumper caps. This is the default setting.
To set the pull high/low resistors to 1 KΩ, make sure that the two jumpers assigned to the serial port are
shorted by jumper caps.
ATTENTION
Do not use the 1 KΩ setting on the MGate
when using the RS-232 interface. Doing so will degrade the RS-
232
signals and shorten the maximum allowed communication distance.
Reset Button

MGate 4101-MB-PBS UM Hardware
3-7
To reset the MGate to the factory default settings, hold down the reset button for about 5 seconds. The MGate
will restart and be rest to factory default settings.
Rotary Switch
Before communication, you must assign a slave ID to the PROFIBUS slave, If you would like to assign an
address between 0 - 99, you need to change the rotary switch to the desired address. If you would like to assign
an address which is over 99, you must set it in the MGate utility.

4
4. Configuration
The following topics are covered in this chapter:

Installing the Software

Starting MGate Manager

Connecting to the Unit

Modifying the Configuration
Configure Device
Configure Modbus Settings
Set up PROFIBUS
IO Mapping Setup
QuickLink
IO Map
Load Default
Monitoring Modbus Activity
Diagnose

Upgrading Firmware

Import/Export

MGate 4101-MB-PBS UM Configuration
4-2
Installing the Software
The following instructions explain how to install MGate Manager, a utility for configuring and monitoring MGate
4101-MB-PBS units over the network.
1. Insert the Document and Software CD into the CD-ROM drive. Locate and run the following setup program
to begin the installation process:
MGM_Setup_[Version]_Build_[DateTime].exe
The latest version might be named MGM_Setup_Ver1.5_Build_xxxxxxxx.exe.
2. You will be greeted by the Welcome window. Click Next to continue.

MGate 4101-MB-PBS UM Configuration
4-3
3. When the Select Destination Location window appears, click Next to continue. You may change the
destination directory by first clicking on Browse.
4. When the Select Additional Tasks window appears, click Next to continue. You may select Create a desktop
icon if you would like a shortcut to MGate Manager on your desktop.

MGate 4101-MB-PBS UM Configuration
4-4
5. Click Next to start copying the software files.
6. A progress bar will appear. The procedure should take only a few seconds to complete.

MGate 4101-MB-PBS UM Configuration
4-5
7. A message will indicate that MGate Manager is successfully installed. You may choose to run it immediately
by selecting Launch MGate Manager.
8. You may also open MGate Manager through Start Programs MGate Manager MGate Manager, as
shown below.

MGate 4101-MB-PBS UM Configuration
4-6
Starting MGate Manager
MGate Manager is a Windows-based utility that is used to configure the MGate 4101-MB-PBS.
Before running MGate Manager, make sure that the MGate 4101-MB-PBS is connected to your PC. Please refer
to Chapter 2 for more details.
You may open MGate Manager from the Windows Start menu by clicking Start Programs MGate
Manager MGate Manager. The MGate Manager window should appear as shown below.
Change Language Setting
If you wish to run MGate Manager in a different language, you may click Language to change the language
setting. A dialog box showing the available languages should appear as shown below.