MOXA MB3180 Series Modbus Gateway Installation Guide
- July 8, 2024
- MOXA
Table of Contents
MOXA MB3180 Series Modbus Gateway
FAQ
- Q: How many TCP clients and serial servers can be connected simultaneously?
- A: The MGate MB3180 supports up to 16 TCP clients and 31 serial servers connected at the same time.
- Q: What is the default IP address for accessing the MGate MB3180?
- A: The default IP address for accessing the MGate MB3180 is 192.168.127.254.
Overview
The MGate MB3180 is a 1-port Modbus gateway that converts between Modbus TCP and Modbus ASCII/RTU protocols. It allows Ethernet clients (masters) to control serial servers (slaves), or allows serial clients to control Ethernet servers. Up to 16 TCP clients and 31 serial servers can be connected simultaneously.
Package Checklist
Before installing the MGate MB3180 Modbus gateway, verify that the package contains the following items:
- 1 MGate MB3180 Modbus gateway
- Power adapter
- 4 stick-on pads
- Quick installation guide (printed)
- Warranty card
Optional Accessory
- DK-35A: DIN-rail mounting kit (35 mm)
- Mini DB9F-to-TB Adapter: DB9 female to terminal block adapter
Notify your sales representative if any of the above items is missing or damaged.
NOTE: This product is powered by a listed power source marked “LPS” and is rated 12 to 48 VDC and 0.25 A minimum. The device’s operating temperature when using the power adapter is 0 to 40°C (32 to 104°F), and 0 to 60°C (32 to 140°F) when using an alternative DC power source. If you need additional help purchasing a power source, please contact Moxa for more information.
Hardware Introduction
As shown in the following figures, the MGate MB3180 has one DB9 male port for transmitting serial data.
Reset Button: The reset button is used to load factory defaults. Using a pointed object such as a straightened paper clip to hold the reset button down for five seconds. Release the reset button when the Ready LED stops blinking in order to load the factory defaults.
LED Indicators: Three LED indicators are on the top panel:
| Name | Color | Function |
|---|---|---|
| Ready | Red | Steady on: |
| Blinking: | IP conflict exists, or DHCP or BOOTP server is not responding |
properly.
Green| Steady on:| Power is on and the unit is functioning
normally.
Blinking:| Unit has been found by the Location
command in MGate Manager.
Off| Power is off or power error condition exists.
Ethernet| Orange| 10 Mbps Ethernet connection.
Green| 100 Mbps Ethernet connection.
Off| Ethernet cable is disconnected or has a short.
P1| Orange| Unit is receiving data from device.
Green| Unit is transmitting data to device.
Off| No data is being exchanged with device.
Hardware Installation Procedure
- STEP 1:
- After unpacking the MGate MB3180, connect the power adapter. Make sure that the adapter is connected to an earthed socket outlet.
- STEP 2:
- Use a standard straight-through Ethernet cable to connect the MGate MB3180 to a network hub or switch. Use a crossover Ethernet cable if you are connecting the gateway directly to a PC.
- STEP 3:
- Connect your device to the MGate MB3180’s serial port.
- STEP 4:
- Place or mount the MGate MB3180. The unit may be placed on a horizontal surface such as a desktop, mounted on a DIN rail, or mounted on the wall.
Wall or Cabinet Mounting
- Mounting the MGate MB3180 onto a wall requires two screws.
- The head of the screws should be 5.0 to 7.0 mm in diameter, the shaft should be 3.0 to 4.0 mm in diameter, and the length of the screws should be at least 10.5 mm.
DIN-rail Mounting
- DIN-rail attachments can be purchased separately to mount the MGate MB3180 on a DIN rail.
Adjustable Pull High/Low Resistors for the RS-485 Port
In some critical RS-485 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. Jumpers JP3 and JP4 are used to set the pull high/low resistor values for the serial port. To access these jumpers, loosen the screws on both sides of the device and open the cover. To set the pull high/low resistors to 150 KΩ, which is the factory default setting, leave the two jumpers open. To set the pull high/low resistors to 1 KΩ, use the jumper caps to short the two jumpers.
MGate MB3180 Jumpers
Software Installation
You can download the MGate Manager, User’s Manual, and Device Search Utility
(DSU) from Moxa’s website: www.moxa.com. Please refer to the User’s Manual for
additional details on using the MGate Manager and DSU.
The MGate MB3180 also supports login via a web browser.
- Default IP address: 192.168.127.254
- Default account: admin
- Default password: moxa
Pin Assignments
Ethernet Port (RJ45)
| Pin | Signals |
|---|---|
| 1 | Tx+ |
| 2 | Tx- |
| 3 | Rx+ |
| 6 | Rx- |
Serial Port (Male DB9)
Pin| RS-232| RS-422/485
(4-Wire)
| RS-485 (2-
Wire)
---|---|---|---
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| –| –| –
Technical Support Contact Information www.moxa.com/support
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