ICP DAS USA GW-7552-B User manual

GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual (Version 1.60, May/2017) PAGE: 1
GW-7552-B / GW-7552-M
PROFIBUS/MODBUS GATEWAY
User's Manual
High Quality, Industrial Data Acquisition, and Control Products

GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual (Version 1.60, May/2017) PAGE: 2
Warranty
All products manufactured by ICP DAS are under warranty regarding
defective materials for a period of one year from the date of delivery to the
original purchaser.
Warning
ICP DAS assumes no liability for damages resulting from the use of this
product. ICP DAS reserves the right to change this manual at any time
without notice. The information furnished by ICP DAS is believed to be
accurate and reliable. However, no responsibility is assumed by ICP DAS
for its use, or for any infringements of patents or other right of third parties
resulting from its use.
Copyright
Copyright 2013 by ICP DAS. All rights are reserved.
Trademark
The names used for identification only may be registered trademarks of
their respective companies.
List of Revision
Date
Author
Version
Revision
2012/04/03
Raiden
1.40
Release
2013/05/30
Elliot
1.50
Release
2017/05/15
Eric
1.60
Add GW-7552-M information.
Update 4.2 , 4.8

GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual (Version 1.60, May/2017) PAGE: 3
Table of Contents
1. Introduction………………………………………………………….4
1.1 Features……………………………………………………………………………………5
1.2 Modules Support…………………………………………………………………………. 5
1.3 Specification………………………………………………………………………………5
2. Hardware…………………………………………………………….7
2.1 Block Diagram of GW-7552-B / GW-7552-M…………………………………………...7
2.2 Pin Assignment……………………………………………………………………………7
2.3 Wiring and Jumper Setting Instructions…………………………………………………..9
2.4 Setting the Profibus Address…………………………………………………………….15
2.5 LED status indicator……………………………………………………………………..16
2.6 Normal/Setting Dip Switch……………………………………………………………...17
3. Communication protocol transfer theorem……………………… 19
3.1 Profibus data exchange…………………………………………………………………..19
3.2 Modbus data exchange…………………………………………………………………..22
3.3 Communication protocol transfer………………………………………………………..25
4. Communication…………………………………………………….30
4.1 Field of application………………………………………………………………………30
4.2 GSD file………………………………………………………………………………….31
4.3 The Configuration of the common parameters…………………………………………..33
4.4 The Configuration of the modules……………………………………………………….36
4.5 Diagnostic messages……………………………………………………………………..38
4.6 I/O data exchange………………………………………………………………………..39
4.7 Establish connection with GW-7552-B / GW-7552-M………………………………….42
4.8 Data exchange example………………………………………………………………….43
5. Application of Utility……………………………………………….54
5.1 Install Utility……………………………………………………………………………..54
5.2 Utility introduction……………………………………………………………………… 57
5.3 Memory address configuration of the module…………………………………………...59
5.4 Safe value setting……………………………………………………………………….. 62
5.5 Establish connection with GW-7552-B / GW-7552-M………………………………….64
6. Troubleshooting…………………………………………………….67
7. Dimensions………………………………………………………….69

GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual (Version 1.60, May/2017) PAGE: 4
1. Introduction
Profibus and Modbus are two kinds of famous protocols and are wildly used in the
fields of factory and process automation. The GW-7552-B / GW-7552-M is a
Profibus to Modbus gateway. By using this module, users can easily put the Modbus
devices into Profibus network.
Figure 1 shows an application example for the GW-7552-B / GW-7552-M module.
Figure 1 Application architecture of the GW-7552-B / GW-7552-M module
The GW-7552-B / GW-7552-M Gateway is specially designed for the slave device of
PROFIBUS DP protocol. In the Modbus protocol application, the GW-7552-B / GW-
7552-M can be a Modbus master device or slave device. The Modbus devices can
exchange data with the Profibus master device via the GW-7552-B / GW-7552-M
module.

GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual (Version 1.60, May/2017) PAGE: 5
The main features and specification of GW-7552-B / GW-7552-M are described as
below:
1.1 Features
●16-Bit Microprocessor inside with 80MHz
●Siemens SPC3 PROFIBUS controller
●Supports PROFIBUS DP-V0 slave
●PROFIBUS transmission rate detect automatically
●Max transmission speed up to 12M bps for PROFIBUS and 115.2K bps for
COM Port
●Supports Modbus RTU/ASCII format
●Supports Modbus master/slave mode
●Supports safe value setting
●COM Port driver has 1K bytes QUEUE input buffer & 512 bytes QUEUE
output buffer
Max length of output/input data is 131/132 Bytes
●Built-in self-tuner ASIC controller on RS-422/485 port
●2500Vrms High Speed iCoupler Isolation Protection for PROFIBUS network
●3000VDC Isolation Protection on the PROFIBUS side
●Provide LED indicators
●Built-in Watchdog
●Mountable on DIN Rail
1.2 Modules Support
Only the following Modbus commands are supported by the gateway.
Table 1: Modbus function codes
Code
Name
Description
01
Read Coil Status
Read the ON/OFF status of discrete outputs in the slave
02
Read Input Status
Read the ON/OFF status of discrete inputs in the slave
03
Read Holding Registers
Read the binary contents of holding registers in the slave
04
Read Input Registers
Read the binary contents of input registers in the slave
05
Force Single Coil
Write a single output to either ON or OFF in the slave
06
Preset Single Register
Write an integer value into a single register in the slave
15
Force Multi. Coils
Write each coil in the sequence of coils to either ON or
OFF in the slave
16
Preset Multi. Registers
Write a block of contiguous registers in the slave
1.3Specification

GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual (Version 1.60, May/2017) PAGE: 6
COM Port specs:
Serial port - RS-232/RS-422/RS-485
Serial port interface: 14-pin screw terminal block
Baud Rate：2400/4800/9600/19200/38400/57600/115200 bps
Data Format: 7/8 data bits, None/Odd/Even parity bit, 1/2 stop bit
PROFIBUS specs:
●PROFIBUS interface connector: D-sub 9-pin female
Baud Rate: 9.6K/19.2K/45.45K/93.75K/187.5K/500K/1.5M/3M/6M/ 12Mbps
Address Setting: 0~126 (set by DIP switch or EEPROM)
Power requirement:
●Unregulated +10V ~ +30V DC
Power reverse protection, Over-Voltage brown-out protection
Power consumption 2.5W
Module specs:
Dimensions:
GW-7552- B : 119mm X 72mm X 33 mm
GW-7552-M : 118mm X 102mm X 26.5 mm
Operating temperature: -25 ~ 75 ºC
Storage temperature: -30 ~ 85 ºC
Humidity：5 ~ 95%, non-condensing
LED Status Indicators(Table 2)
Table 2: LED status indicator
PWR LED
Shows the power state
COM Port state: transmit or receive data
ERR LED
Show error state
RUN LED
Show communication state of PROFIBUS

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2. Hardware
2.1 Block Diagram of GW-7552-B / GW-7552-M
Figure 2 Block diagram of GW-7552-B / GW-7552-M
2.2 Pin Assignment

GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual (Version 1.60, May/2017) PAGE: 8
Figure 3 Pin assignment of GW-7552-B / GW-7552-M
Table 3 14-pin screw terminal block
Pin
Name
Description
1
D+
Data+ of RS-485
2
D-
Data- of RS-485
3
-
N/A
4
TX+
Transmit Data+ of RS-422
5
TX-
Transmit Data- of RS-422
6
RX+
Receive Data+ of RS-422
7
RX-
Receive Data- of RS-422
8
-
N/A
9
RX
Receive Data of RS-232
10
TX
Transmit Data of RS-232
11
GND
GND of RS-232
12
-
N/A
13
+VS
V+ of Power Supply(+10 to +30VDC)
14
GND
GND of Power Supply
Table 4 PROFIBUS DB9 Female Connector

GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual (Version 1.60, May/2017) PAGE: 9
Pin
Name
Description
1
-
N/A
2
-
N/A
3
B
Non-inverting Bus Line
4
ISODE
Isolated DE output for use in PROFIBUS
applications where the state of the isolated drive
enable node needs to be monitored.
5
GND
Power supply ground for the first node and the last
node
6
VP
+5V Power Supply for the first node and the last
node
7
-
N/A
8
A
Inverting Bus Line
9
-
N/A
2.3Wiring and Jumper Setting Instructions
The GW-7552-B / GW-7552-M module supports PROFIBUS to Serial Port
communication. It is recommended to use only one serial port (RS232, RS485 or
RS422) of the Gateway at the same time. The following section describes the
necessary steps to be taken to connect one of the three COM port types to a
Modbus network.
2.3.1 RS-232 connection
The RS-232 port of the GW-7552-B / GW-7552-M has got three pins. The
wiring of the RS-232 device with the RS232 port of the GW-7552-B / GW-
7552-M is shown in figure 4.
Figure 4 RS-232 wiring diagram
GW-7552-B/GW-7552-M
RS-232 COM port
RS-232 device

GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual (Version 1.60, May/2017) PAGE: 10
2.3.2 RS-422 connection
The RS-422 wiring connection is shown in figure 5.
The GW-7552-B / GW-7552-M gateway can be a Modbus master or Modbus
slave in a local RS-422 network. Depending on whether the gateway acts as a
Modbus master or as a Modbus slave and on the number of devices connected to
the RS-422 network device the four jumpers provided by the module has to be
set according to table 5. The jumpers set the pull high and pull down resistors
for the RS-422 port (Figure 6, Figure 7).
Figure 5 RS-422 connection
Table 5 Jumper position for the RS-422 port
Pull high/low resistor
Condition
Enabled
(default)
The GW-7552-B / GW-7552-M is the
master in RS-422 bus or
the number of devices connected to
the RS-422 bus is less than 10
Disabled
The GW-7552-B / GW-7552-M is a
slave in RS-422 bus or
the number of devices connected to
the RS-422 bus exceeds 10
RS-422 port
GW-7552-B/GW-7552-M
RS-422 port