SST Automation GT200-DP-RS User Manual
Universal Serial/PROFIBUS DP Gateway
GT200-DP-RS
User Manual
V6.1
SST Automation
E-mail: SUPPORT@SSTCOMM.COM
WWW.SSTCOMM.COM
User Manual
Universal Serial/PROFIBUS DP Gateway
GT 200 -D P-R S
WWW.SSTCOMM.COM
2
Catalog
1 About the Gateway
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1.1 Product Function
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1.2 Product Features
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1.3 Technical Specifications
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1.4 Related Products
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2 Quick Start Guide
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2.1 Power Wiring
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2.2 Wiring with PC
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2.3 Configuration Method
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2.4 Wiring with Serial Device
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2.5 Wiring PROFIBUS DP Interface
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2.6 Debug
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3 Hardware Descriptions
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3.1 Product Appearance
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3.2 Indicators
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3.3 LED Display and Button
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3.3.1 LED Display
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3.3.2 PROFIBUS DP Address Setting Button
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3.4 Interface
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3.4.1 Power Interface
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3.4.2 PROFIBUS DP Interface
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3.4.3 RS-485/RS-422 Interface
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3.4.4 RS-232 Interface
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4 Working Principle
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4.1 Modbus Master
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4.2 Modbus Slave
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5 Universal Mode
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5.1 Data Exchange
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5.2 Universal Protocol
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6 Software Instructions
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6.1 Notes before Configuring
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6.2 User Interface
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6.3 The Operation of Equipment View
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6.3.1 Equipment View Interface
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6.3.2 Operation Mode of Equipment View
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6.3.3 Operation Types of Equipment View
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6.4 The Operation of Configuration View
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6.4.1 Interface of Fieldbus Configuration View
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6.4.2 Interface of Subnet Configuration View
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6.4.3 Interface of Node Configuration View
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6.4.4 Interface of Command Configuration View
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6.4.5 Notes View
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6.5 Conflict Detection
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6.5.1 Operation of Command List
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6.5.2 Operation of Memory Mapping Area
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6.6 Hardware Communication
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6.6.1 Serial Configuration
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6.6.2 Upload Configuration
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6.6.3 Download Configuration
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6.7 Load and Save Configuration
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6.7.1 Load Configuration Project
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6.7.2 Save Configuration Project
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6.8 Export EXCEL
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6.9 Debug
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6.9.1 Debug Interface of 4.X or 3.X
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6.9.2 Debug Interface of 5.x and above
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7 PROFIBUS DP Hardware Configuration Instructions
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7.1 Register GSD file
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7.2 DPRS2A.GSD－Configuration software configuration mode use
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7.3 DPRS2M.GSD－DP Hardware Configuration of Modbus master
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7.4 DPRS2S.GSD－DP Hardware Configuration of Modbus slave
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7.5 DPRS2T.GSD－DP Hardware Configuration of User Config
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8 Installation
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8.1 Machine Dimension
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8.2 Installation Method
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Appendix A: Using STEP 7 to Set PROFIBUS DP
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Appendix B: How STEP7 Access Data of Gateway and Select Data Module
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How STEP7 Access Data of Gateway
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How STEP7 Select Data Module
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User Manual
Universal Serial/PROFIBUS DP Gateway
GT 200 -D P-R S
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1 About the Gateway
1.1 Product Function
The gateway GT200-DP-RS enables data to establish communication between the serial port and PROFIBUS DP
(PROFIBUS DP master such as Siemens PLC). At the same time it can remotely obtain real-time I / O data, status and other
information of the connected PLC and serial device via docking cloud platforms such as bokaiyun to achieve remote
monitoring. The gateway can connect multiple devices with Modbus/RS-485/RS-232/RS-422 interface with PROFIBUS DP,
meaning that Modbus/RS-485/RS-232/RS-422 network devices can be converted to PROFIBUS DP network devices.
1.2 Product Features
Wide Application: Any devices with RS-485/RS-232/RS-422 can be connected to PROFIBUS DP network through
GT200-DP-RS. For example Variable-frequency Drive with Modbus protocol interface, Motor starting protector,
transmitters.
Easy to use: Users don’t need to know more knowledge about PROFIBUS and Modbus, and they can configure the
gateway according to the user manual in a short time without complex programming.
Transparent communication: Users can refer to mapping relations between PROFIBUS DP data area and Modbus data
area to realize the transparent data communication between PROFIBUS DP and Modbus.
1.3 Technical Specifications
1. Act as a PROFIBUS DP slave at the side of PROFIBUS DP, while Modbus master, Modbus slave and Universal
mode can be selected at serial side and serial interface can be selected RS-232, RS-485 or RS-422. The mapping of
PROFIBUS DP and Modbus communication data area can achieve transparent communication of PROFIBUS and Modbus;
2. Serial: RS-485, RS-232, RS-422, half-duplex. Baud rate: 300, 600, 1200, 2400, 4800, 9600, 19.2 K, 38.4K, 57.6K
and 115.2Kbps can be selected. Parity check mode: None, Odd Even, Mark and space can be selected;
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3. As a Modbus master, it supports 01H, 02H, 03H, 04H, 05H, 06H, 0FH and 10H function codes.
Use configuration software to configure:
It can be configured up to 100 Modbus commands. 03H and 04H support "Word / Byte mapping". Through the
high-byte or low-byte mapping of the registers can effectively utilize PROFIBUS DP input-byte; Support monitoring
status of Modbus slave; Support clearing data or keep the last data when input-data is abnormal; Support
re-transmitting data when response is timeout;
Hardware configuration of PROFIBUS DP master (Abbr. DP master hardware configuration):
Support configuring at most 48 Modbus commands; Support monitoring status of Modbus slave; Support
clearing data or keep the last data when input-data is abnormal; Support re-transmitting data when response is
timeout;
4. Modbus slave supports 01H, 02H, 03H, 04H, 05H, 06H 0FH and 10H function codes;
5. Support the control mode of character timeout and character number in universal mode, and have the function of
sending automatically;
6. DP/V0 PROFIBUS DP communication capability, in accordance with EN50170;
7. As a PROFIBUS DP slave, baud rate is self-adaptive, and the maximum baud rate is 12Mbps;
8. PROFIBUS DP input-byte and output-byte number can be freely set and the maximum input and output bytes are:
Max Input bytes ≤244 Bytes
Max Output bytes ≤244 Bytes
Max Input Bytes + Output Bytes ≤488Bytes
9. Support clearing data or keep the last data when input-data is abnormal;
10. Update firmware function;
11. Power: 24VDC (11V~30V), 80mA;
12. Working circumstance temperature: -4℉~140℉ (-20℃~60℃), Humidity: 5%~ 95% (non-condensing);
13. External dimensions (W*H*D): 0.98 in*3.94 in *3.54 in (25mm*100mm*90mm);
14. Installation: 35mm DIN RAIL;
15. Protection Level: IP20;
16. Test standard: In accordance with EMC test standard.
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1.4 Related Products
Other related products in SSTCOMM: GT100-DP-RS and so on.
If you want to get more information about these products, please visit SSTCOMM website: http://www.sstcomm.com.
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2 Quick Start Guide
2.1 Power Wiring
The power is 24V DC, wiring method is shown as follow:
2.2 Wiring with PC
Establish the connection the RS-232 interface of gateway with PC, the wiring method is shown as follow:
2.3 Configuration Method
GT200-DP-RS V6.1 version product supports two methods to configure: One is through configuration software, the
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other is through DP hardware configuration (this method is new added function of V6.X). It also supports USB and RS232
interface to configure. The LED Display of GT200-DP-RS will show in DP slave address and “-U” or “-P” alternately.
When showing “-U” on LED Display, the gateway is in the “Software configuration” state; When showing “-P”, it means
the gateway is in “DP Hardware Configuration” state.
1) When using “Setting through configuration software”, users can choose to use USB interface or RS-232 interface to
configure. If users use USB interface to configure it, they can download and upload the configuration under run and
configuration mode. USB interface can auto-detect and switch to the configuration mode. If users use RS-232 interface to
configure the gateway, GT200-DP-RS should be entered into configuration mode and finish upload and download tasks.
How to enter into configuration mode? Power on GT200-DP-RS, long press button for 5s, LED display shows CF blinking.
Click the button again to enter into configuration mode, LED display shows CF on.
Configuration software is named SST-MPG-CFG. Double click the application and install the configuration software
SST-MPG-CFG. Users can finish the installation lightly according to the wizard. Power on GT200-DP-RS, long press
button for 5s, LED display shows CF blinking. Click the button again to enter into configuration mode, LED display shows
CF on. Open the software SST-MPG-CFG and users can configure GT200-DP-RS.
2) Use “DP Hardware Configuration” way, first of all, users should confirm that LED display is showing “-P”, if it shows
“-P”, that means the gateway has been entered into “DP Hardware Configuration” status. Users can configure the gateway
in DP hardware configuration, no need to upload/download configuration in the software; If the LED display shows “-U”,
users should download the configuration that is “DP Hardware Configuration” in SST-MPG-CFG to let the gateway enter
into this mode, then users can use DP Hardware way to configure the gateway.
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2.4 Wiring with Serial Device
After finishing configuration, wire communication interface, the wiring method of RS-232 is the same with "wiring
with PC", the wiring method of RS-485 is shown as follow:
The wiring method of RS-422 is shown as follow:
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When RS-485 is in the communication of point to multi-point, to prevent the reflection and obstruction of signal, users
need to use two terminal resistances in furthest ports of line, and the parameters are 120Ω 1/2W.
Note: There is no terminal resistor inside RS-485 interface of GT200-DP-RS.
2.5 Wiring PROFIBUS DP Interface
Suggest wiring PROFIBUS DP with standard PROFIBUS DP connector. The description of PROFIBUS DP interface
has been shown in chapter 4.4.2.
Set the address of PROFIBUS DP through button on the panel.
Under normal run mode, LED display shows the address of PROFIBUS DP.
Register GSD file to PROFIBUS DP master configuration software (STEP7), and configure parameters.
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PBF light being off and STA light being blinking show the connection with PROFIBUS DP master is successful!
2.6 Debug
GT200-DP-RS supports three operating modes: Modbus Master, Modbus Slave and User Config. GT200-DP-RS
supports debugging function in three modes. Quickly press the button for 3 times, GT200-DP-RS enter into debug mode,
the LED display shows “db” always on.
Notes: Under “Software Configuration” mode, the gateway can enter into Debug without DP master; Under “DP
Hardware Configuration” mode, the Debug function is enabled when connecting DP master, it is disabled without DP
master communication.
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3 Hardware Descriptions
3.1 Product Appearance
Note: This picture is for reference only. Product appearance should accord to the real object.
Power Interface
RS-485/RS-422
Interface
RS-232 Interface
PROFIBUS DP
Interface
Indicators
LED Display
Button
USB Interface
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3.2 Indicators
Indicators
State
Description
PB
PBF
Always Red
PROFIBUS DP communication fails.
Close
Communication is ok.
STA
Green Blinking
PROFIBUS DP is communicating.
Close
PROFIBUS DP is not communicating.
RS-232/485
/422
TX
Green Blinking
RS-485/422 port is sending data.
Close
RS-485/422 port isn't sending data.
RX
Green Blinking
RS-485/422 port is receiving data.
Close
RS-485/422 port isn't receiving data.
3.3 LED Display and Button
3.3.1 LED Display
LED display is in the front of the product.
There are three display conditions:
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LED display
Description
CF
The gateway is in the configuration mode.
db
The gateway is in the debug mode.
Number+“-P” or
“-U” alternate
blinking
The gateway is in the run mode. The number shows the PROFIBUS DP slave
address. “-U” shows the gateway is in the “Software Configuration” mode; “-P”
shows the gateway is in the “DP Hardware Configuration” mode.
3.3.2 PROFIBUS DP Address Setting Button
Configuration button on the front panel can be used to set the address of the PROFIBUS DP slave. Now, we have three
operation ways to provide users.
1) Under normal working condition of the GT200-DP-RS, digital tube always displays the address of the current
PROFIBUS DP address. Quickly press (double-click) the button twice in succession, the high bit starts flash, and the low bit
always on, click the button to add 1 to start setting the PROFIBUS DP address high bit. Long-press the button for 2.5
seconds, the high bit is always on, and the low bit starts flash. Click the button to add 1to start setting the PROFIBUS DP
address low bit. Then long-press the button for 2.5 seconds to save DP address.
2) Long press button for 5 seconds, LED display shows CF blinking, click button to enter into configuration state, the
LED display shows CF on, users can upload and download the configuration under this mode. When it is done, long press
2.5 seconds to enter into the run mode, the LED display shows DP address.
3) Quick click the button for three times in 3s to enter into debug mode, the LED display shows db is always on. Users
can do the serial debugging and other actions. When it is done, click the button three times in 3s to enter into the run mode,
the LED display shows DP address.
Notes: After entering into PROFIBUS DP address setting, the gateway will exit the address setting state automatically
and keep showing the original address without any action button within 10 seconds. The settable range of PROFIBUS DP
address is 0~99 (DEC).
The operation instruction of button is shown as below:
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3.4 Interface
3.4.1 Power Interface
GNDNC24V+
1
2
3
Pin
Function
1
GND
2
NC(No Connect)
3
24V+, DC plus 24V
3.4.2 PROFIBUS DP Interface
5
1
PROFI_A (Pin 8)
GND (Pin 5)
PROFI_B (Pin 3)
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PROFIBUS DP interface uses DB9 male-connector, and the pins are defined as follow:
Pin
Function
3
PROFI_B, Data positive
4
RTS
5
GND
6
+5VOutput
8
PROFI_A, Data negative
Bolt
SHIELD, Bus cable shield ground
PROFI_B (pin 3), PROFI_A (pin 8) and the shield GND (bolt) must be connected; RTS (pin 4) can be used to
determine the direction of transmission by equipment; +5 V (Pin 6) and GND (Pin 5) are used for the bus terminal, and can
also be used supply to fiber optic transceivers. The maximum output current of pin 5 and pin6 is 80mA.
3.4.3 RS-485/RS-422 Interface
The RS-485 interface of GT200-DP-RS is standard, and the RS-485 characteristics of the product are shown as
follows:
1. The basic characteristics of RS-485 transmission technology
① Network topology: Linear bus, there are active bus termination resistors at both sides.
② Transfer rate: 300 bps~115.2Kbps.
③ Media: Shielded twisted-pair cable and also can cancel the shielding, depending on environmental conditions
(EMC).
④Site number: 32 stations per subsection (without repeater), and can up to 127 stations (with RS-485 repeater).
⑤Plug connection: 3-pin pluggable terminal.
2. The main points on RS-485 transmission equipment installation
①All the equipment be connected with RS-485 bus;
②Subsection can be connected up to 32 sites;
③The farthest end of each bus has a termination resistor—120Ω 1/2W to ensure reliable operation of the network.
Serial interface uses 5-pin pluggable terminal and users can wire it according to the wiring instructions on the panel.
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Pin
Function
1
R-, RS-422 Receive Negative
2
R+, RS-422 Receive Positive
3
GND
4
D-, RS-485/RS-422 Transmit Negative
5
D+, RS-485/RS-422Transmit Positive
3.4.4 RS-232 Interface
RS-232 interface uses a 3-pin pluggable open terminal, and its pin description is shown as follows:
Pin
Function
1
RX, Connect user device RS-232's RX
2
TX, Connect user device RS-232's TX
3
GND, Connect user device RS-232's GND
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4 Working Principle
4.1 Modbus Master
The data conversion between Modbus and PROFIBUS of GT200-DP-RS is established by mapping. GT200-DP-RS
has two data buffers, one is PROFIBUS network input buffer; the other is PROFIBUS network output buffer. Command ID
1, 2, 3 and 4 of Modbus puts the data read from Modbus slave station into network input buffer for reading by PROFIBUS
network; Command ID 5, 6, 15 and 16 of Modbus write the data from network output buffer into Modbus slave station.
Modbus
Device 1
Modbus
Device 2
Modbus
Device 3
Modbus
Device 4
Input buffer
Output buffer
Support 01H, 02H, 03H, 04H, 05H, 06H, 0FH, 10H function codes, when using “DP Hardware Configuration”, users
can configure 48 Modbus commands Module. When using “Software Configuration”, users can configure at most 100
Modbus commands in the software SST-MPG-CFG.
4.2 Modbus Slave
The data conversion between Modbus of GT200-DP-RS Modbus Slave and PROFIBUS is established by mapping
relation. GT200-DP-RS has two data buffers, one is PROFIBUS network input buffer, and the other is PROFIBUS network
output buffer. Network input and output buffers are relative to PROFIBUS. Modbus write-register commands write data
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into network input buffer for PROFIBUS network reading. Modbus read-register commands data from network output
buffer, and transmit to Modbus master device through response messages.
PROFIBUS
Input buffer
4xxxx
00000 (40001)
00001 (40002)
00002 (40003)
… …
0xxxx
00000 (00001)
00001 (00002)
00002 (00003)
… …
PROFIBUS
Output buffer
3xxxx
00000 (30001)
00001 (30002)
00002 (30003)
… …
1xxxx
00000 (10001)
00001 (10002)
00002 (10003)
… …
Modbus write
commands: 06H
and 10H
Modbus read
commands: 03H
Modbus write
commands: 05H
and 0FH
Modbus read
commands: 01H
Modbus read
commands: 04H
Modbus read
commands: 02H
Support Modbus register address area 3 (3xxxx), area 4 (4xxxx), area 0 (0xxxx) and area 1 (1xxxx); and area 3
supports 04H function code; area 4 supports 03H, 06H, and 10H function codes; area 0 supports 01H, 05H, and 0FH
function codes; 1 area supports 02H function code.
PROFIBUS DP input buffer being relative to Modbus side is Modbus master output, mapping to Modbus holding
registers 4xxxx (10H and 06H commands are used to write data, 03H command is used to read back data) and loops 0xxxx
(0FH and 05H commands are used to write data, 01H command is used to read back data).
PROFIBUS DP output buffet being relative to Modbus side is Modbus master input, mapping to Modbus input
registers 3xxxx (04H command is used to read data) and input bits 1xxxx (02H command is used to read data).
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5 Universal Mode
5.1 Data Exchange
This product provides data communication between PROFIBUS DP and RS-485/RS-232. The communication between
PROFIBUS DP and RS-485/RS-232 is bidirectional. The output data of PROFIBUS DP can be sent to RS-485/RS-232
fieldbus through the interface of RS-485/RS-232 and the data received from RS-485/RS-232 is put into input data of
PROFIBUS DP. Data exchange is shown as follows:
Above, "EO" is transaction number of PROFIBUS output data; "i" is serial data number included in output data being
transmitted; "D1" to "Di" are data being transmitted by serial; "Ei" is transaction number of PROFIBUS input data; "j" is
serial data number included in input data receiving form serial; "D1" to "Dj" are data receiving form serial.
EoiD1D2…Di0
…
EijD1D2…Dj0
…
D1D2…DiD1…Dj
PROFIBUS
DP
RS
-485
/RS-232
GT200-DP-RS
PROFIBUS output data
PROFIBUS input data
Serial output data
Serial input data
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5.2 Universal Protocol
PROFIBUS DP output data format:
[Transaction number][Length of serial output data n][Serial output data 1]… [Serial output data n] [0x00] … [0x00]
|— n —| |— m —|
Note:
The number of PROFIBUS DP output byte should be greater than or equal to n + 1;
M 0x00 are filling data (also for arbitrary number); n + m +1 should be equal to the number of PROFIBUS DP
output-byte.
Transaction number: When transmit output data; the transaction number must add 1 to show a new frame data.
Example:
If users select the number of PROFIBUS DP input byte and output-byte is 8-byte input and 8-byte output, length of
serial output-data is 3, data are 01 02 03. Current transaction number is 0.
The format of output-data is:
[01][03][01][02][03][00][00][00][00]
PROFIBUS DP input data format:
[Transaction number][Length of serial input data n] [Serial input data 1] … [Serial input data n] [0x00] … [0x00]
|— n —| |— m —|
Note:
The number of PROFIBUS DP input byte should be greater than or equal to n + 1;
M 0x00 are filling data (also for arbitrary number); n + m +1 should be equal to the number of PROFIBUS DP
input-byte.
Transaction number: The transaction number adds 1 showing a new frame input data.
Example:
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If users select the number of PROFIBUS DP input-byte and output byte is 8-byte input and 8-byte output, length of
serial input-data is 3, data are 04 05 06. Current transaction number is 0.
The format of input data is:
[01][03][04][05][06][00][00][00][00]
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6 Software Instructions
6.1 Notes before Configuring
SST-MPG-CFG is a product based on Windows platform, and it can set related parameters and commands of Modbus
and PROFIBUS DP of GT200-DP-RS.
Double-click the icon to enter configuration interface:
6.2 User Interface
SST-MPG-CFG interface include: title bar, menu bar, toolbar, status bar, equipment section, configuration section and
notes section.
Note: All the gray part in the software cannot be modified.
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Toolbar is shown as below:
Functions separately from left to right are: new, save, open, add nodes, delete nodes, add commands, delete commands,
upload configuration, download configuration, calculate mapping address, conflict detection, Export EXCEL, debug, edit
base address and cancel edit address.
New: Create a new configuration project
Save: Save the current configuration
Open: Open a configuration project
Add Nodes: Add a Modbus slave node
Delete Nodes: Delete a Modbus slave node
Equipment section: can
choose the operating
targets, including fieldbus
or sub-network and add
the nodes and
Menu bar
Toolbar
Title bar
Configuration section: input
configuration parameters, gray
part cannot be modified, while
white part can be modified.
Notes section: The specific
explanation to the nouns
appearing in the
configuration and devices to
help users to understand and
operate.
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