BeiJer GL-9073 User manual

Page 1 of (39)
G-series GL-9073 Modbus RS485 light version Rev. 1.01.docx
Modbus RS485 network adapter light version
GL-9073
User manual

GL-9073 User Manual
Page 2 of (39)
G-series GL-9073 Modbus RS485 light version Rev. 1.01.docx
DOCUMENT CHANGE SUMMARY
REV.
PAGES
REMARKS
DATE
Editor
1.00
New Document
2020/09/01
MJ KWON
1.01
First release
2019/01/29
NJL

GL-9073 User Manual
Page 3 of (39)
G-series GL-9073 Modbus RS485 light version Rev. 1.01.docx
Table of Contents
1. Important Notes............................................................................................................................ 5
1.1. SafetyInstruction.......................................................................................................................... 6
1.1.1. Symbols........................................................................................................................... 6
1.1.2. Safety Notes..................................................................................................................... 6
2. Specification................................................................................................................................. 7
2.1. The Interface................................................................................................................................. 7
2.1.1. GL-9073.................................................................................................................................. 7
2.2. Specification................................................................................................................................. 8
2.2.1. General Specification ........................................................................................................... 8
2.2.2. Interface specification.......................................................................................................... 9
2.3. LED indicator.............................................................................................................................. 10
2.3.1 MOD (Module Status LED)................................................................................................... 10
2.3.2 RXD (Receive Data LED)...................................................................................................... 10
2.3.3 TXD (Transmit Data LED)..................................................................................................... 10
2.3.4 IOS LED (Extension Module Status LED)........................................................................... 10
3.Dimension.................................................................................................................................... 11
3.1. GL-9073....................................................................................................................................... 11
4. Mechanical setup ....................................................................................................................... 12
4.1. Total expansion......................................................................................................................... 12
4.2. Plugging and removal of the components................................................................................ 12
5. MODBUS Electrical Interface..................................................................................................... 12
5.1. G-Bus System............................................................................................................................. 14
I/O Messaging5.2 G-Bus Pin Description......................................................................................... 14
5.3. GL-9073 Electrical Interface....................................................................................................... 16
5.3.1. RJ-45 Socket ....................................................................................................................... 16
5.3.2. MODBUS Dip Switch Setup................................................................................................ 16
5.3.3. Process Image Map............................................................................................................. 17
5.3.4. MODBUS Interface Register/Bit Map ................................................................................ 17
5.4. Example ...................................................................................................................................... 18
5.4.1. Example of Input Process Image (Input Register) Map.................................................... 18
5.4.2. Example of Output Process Image (Output Register) Map .............................................. 19
6. MODBUS TCP/UDP INTERFACE................................................................................................ 20

GL-9073 User Manual
Page 4 of (39)
G-series GL-9073 Modbus RS485 light version Rev. 1.01.docx
6.1 MODBUS TCP/ UDP Protocol ..................................................................................................... 20
6.1.1. Comparison of MODBUS TCP/UDP and MODBUS/RTU ................................................... 20
6.1.2. MODBUS TCP/ UDP MBAP Header.................................................................................... 21
6.2 Supported MODBUS Function Codes........................................................................................ 21
6.2.1. 1(0x01) Read Coils.............................................................................................................. 22
6.2.2. 2(0x02) Read Discrete Inputs ............................................................................................. 22
6.2.3. 3(0x03) Read Holding Registers......................................................................................... 23
6.2.4. 4 (0x04) Read Input Registers............................................................................................ 23
6.2.5. 5 (0x05) Write Single Coil ................................................................................................... 24
6.2.6. 6 (0x06) Write Single Register............................................................................................ 25
6.2.7. 8 (0x08) Diagnostics ........................................................................................................... 25
6.2.8. 15 (0x0F) Write Multiple Coils ............................................................................................ 27
6.2.9. 16 (0x10) Read/Write Multiple Registers............................................................................ 28
6.2.10. 23 (0x17) Read/Write Multiple Registers.......................................................................... 28
6.2.11 Error Response.................................................................................................................. 29
6.3 MODBUS Special Register Map.................................................................................................. 30
6.3.1 Adapter Identification Special Register (0x1000, 4096)..................................................... 30
6.3.2 Adapter Watchdog Time, other Time Special Register (0x1020, 4128)............................. 30
6.3.3 Adapter Information Special Register (0x1100, 4352) ....................................................... 30
6.3.4 Expansion Slot Information Special Resister (0x2000, 8192)............................................ 32
6.4. MODBUS Reference................................................................................................................... 33
7. Trouble Shooting........................................................................................................................ 34
7.1. How to diagnose by LED indicator............................................................................................ 34
APPENDIX A................................................................................................................................... 36
A.1 Product List................................................................................................................................. 36
A.2. Glossary..................................................................................................................................... 38

GL-9073 User Manual
Page 5 of (39)
G-series GL-9073 Modbus RS485 light version Rev. 1.01.docx
1. Important Notes
Solid state equipment has operational characteristics differingfrom those of electromechanicalequipment.
Safety Guidelinesfor the Application, Installationand Maintenanceof SolidState Controls describes some
importantdifferences between solid state equipmentand hard-wired electromechanical devices.
Because of this difference,and also because of the wide variety of uses for solid state equipment,all
persons responsiblefor applying this equipmentmust satisfy themselves that each intended application of
this equipmentis acceptable.
In no event will Beijer Electronics be responsible or liable for indirect or consequentialdamagesresulting from
the use or applicationof this equipment.
The examplesand diagramsin this manual are included solely for illustrative purposes. Because of the
many variables and requirements associated with any particular installation,Beijer Electronics cannot
assume responsibilityor liabilityfor actual use based on the examples and diagrams.
✓ If you don't follow the directions, it could causea personalinjury, damageto the equipment or
explosion
⚫ Do not assemble the products and wire with power applied to the system. Else it may cause an electric
arc, which can result into unexpectedand potentially dangerousaction by field devices. Arching is
explosion risk in hazardous locations. Be sure that the area is non-hazardousor remove system power
appropriately before assembling or wiring the modules.
⚫ Do not touch any terminal blocks or IO moduleswhen system is running. Else it may cause the unitto
an electric shock or malfunction.
⚫ Keep away from the strange metallicmaterialsnot relatedto the unit and wiring works should be
controlledby the electric expert engineer.Else it may cause the unitto a fire, electric shock or
malfunction
✓ If you disobey the instructions, there may be possibilityof personalinjury, damage to equipment
or explosion. Pleasefollow below Instructions.
•Check the rated voltage and terminalarray before wiring.Avoid the circumstances over 50℃of
temperature.Avoid placing it directly in the sunlight.
•Avoid the place undercircumstances over 85% of humidity.
•Do not place Modulesnear by the inflammable material.Else it may cause a fire.
•Do not permit any vibration approaching it directly.
•Go through module specification carefully, ensure inputs, output connections are made with the
specifications. Use standard cables for wiring.
•Use Product underpollutiondegree 2 environment.
Warning!
Caution!

GL-9073 User Manual
Page 6 of (39)
G-series GL-9073 Modbus RS485 light version Rev. 1.01.docx
1.1. Safety Instruction
1.1.1. Symbols
Identifiesinformation about practices or circumstances that can cause an
explosion in a hazardous environment, which may lead to personalinjury or
death property damage,or economic loss
Identifiesinformation that is critical for successful applicationand understandingof the
product
Identifiesinformation about practices or circumstances that can lead to personal
injury, property damage,or economic loss.
Attentionshelp you to identitya hazard, avoid a hazard, and recognize the
consequences
1.1.2. Safety Notes
The modulesare equippedwith electroniccomponentsthat may be destroyed by
electrostaticdischarge. When handlingthe modules, ensure that the environment (persons,
workplace and packing) is well grounded.Avoid touching conductive components, G-BUS
Pin.

GL-9073 User Manual
Page 7 of (39)
G-series GL-9073 Modbus RS485 light version Rev. 1.01.docx
2. Specification
2.1. The Interface
2.1.1. GL-9073
-
-
Pin No.
Signal Description
1
System Power, 24V
2
System Power, 24V
3
F.G
4
Field Power, Ground
5
Field Power, 24V

GL-9073 User Manual
Page 8 of (39)
G-series GL-9073 Modbus RS485 light version Rev. 1.01.docx
2.2. Specification
2.2.1. General Specification
General specification
UL System Power
Supply voltage : 24Vdc nominal, Class 2
System Power
Supply voltage : 24Vdc nominal
Supply voltage range : 15~28.8Vdc
Reverse polarity protection
Power Dissipation
20mA typical @ 24Vdc
Current for I/O Module
1.0A @ 5Vdc
Isolation
System power to internal logic : Non-isolation
System power I/O driver : Isolation
UL Field Power
Supply voltage : 24Vdc nominal, Class 2
Field Power
Supply voltage : 24Vdc typical
* Field Power Range is different depending on IO Module series.
Refer to IO Module`s Specification.
Max. Current Field Power Contact
DC 8A Max
Wiring
I/O Cable Max. 2.0㎟(AWG14)
Torque
0.8Nm(7 lb-in)
Weight
77g
Module Size
22mm x 109mm x 70mm
Environmental specification
Operating Temperature
- 20℃~ 60℃: 1.0A full load is allowed.
UL Temperature
- 20℃~ 60℃
Storage Temperature
- 40℃~ 85℃
Relative Humidity
5% ~ 90% non-condensing
Mounting
DIN rail

GL-9073 User Manual
Page 9 of (39)
G-series GL-9073 Modbus RS485 light version Rev. 1.01.docx
2.2.2. Interface specification
Interface Specification GL-9073(RS-485)
Adapter Type
Slave node (MODBUS Serial RTU/ASCII Server)
Protocol
MODBUS RTU and ASCII
Max. Expansion Module
16 slots
Max. Data Size(Input + Output)
Max. Input 256 bytes / Output 256 bytes
Max Length Bus Line
500m
Max. Nodes
8 nodes
Baud Rate
2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
Interface Connector
RJ-45 socket * 2pcs
Settable Node Address
Via Dip switch
Indicator
4 LEDs
1 Green/Red, Module Status (MOD)
1 Green, Physical Connection (LINK)
1 Green, Exchange Date/Traffic Present (ACTIVE)
1 Green/Red, Expansion I/O Module Status (IOS)
Module Location
Starter module left side of G-Series system
-
General specification
Shock Operating
IEC 60068-2-27
Vibration Resistance
Based on IEC 60068-2-6
DNVGL-CG-0039 : Vibration Class B, 4g
Industrial Emissions
EN 61000-6-4/A11 : 2011
Industrial Immunity
EN 61000-6-2 : 2005
Installation Position
Vertical and horizontal installation is available
Product Certifications
CE, UL, FCC

GL-9073 User Manual
Page 10 of (39)
G-series GL-9073 Modbus RS485 light version Rev. 1.01.docx
2.3. LED indicator
-
-
2.3.1 MOD (Module Status LED)
Status
LED
To indicate
Not Powered
OFF
Power is not supplied to the unit.
Device Operational
Green
The unit is operating in normal condition.
Unrecoverable Fault
Red
The device has an unrecoverable fault.
- Memory error or CPU watchdog error.
- 2.3.2 RXD (Receive Data LED)
Status
LED
To indicate
Not Powered or Not Linked
OFF
Device is idle or may not be powered.
Adapter received correct
message frame
Green
Adapter(Slave) received correct frame which address to the
slave or broadcast. About 20msec flashing
- 2.3.3 TXD (Transmit Data LED)
Status
LED
To indicate
Not Powered
OFF
Device is idle or may not be powered.
Adapter transmit frame
Flashing Green
Adapter(slave) transmit frame. About 20msec flashing.
-
2.3.4 IOS LED (Extension Module Status LED)
Status
LED
To indicate
Not Powered
OFF
Device may not be powered.
No Expansion Module
Flashing Red
Adapter has no expansion module
Internal Bus Connection,
Run Exchanging I/O
Green
Exchanging I/O data.
Expansion Configuration
Failed
Red
One or more expansion module occurred in fault state.
- Detected invalid expansion module ID.
- Overflowed Input/Output Size
- Too many expansion module
- Initialization failure
- Communication failure.
- Changed expansion module configuration.
- Mismatch vendor code between adapter and expansion
module.
LED
LED Function / Description
LED Color
MOD
Module Status
Green/Red
RXD
Physical Connection
Green
TXD
Exchange Data/Traffic Present
Green
IOS
Expansion Module Status
Green/Red