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Modbus TCP/IP to Modbus Master/Slave Gateway - 4 Port


Our Modbus TCP/IP communication gateways offer bidirectional data transfers between devices on dissimilar networks. Our Modbus TCP/IP Driver uses Multiple Clients and Servers for faster data throughput. Protocol conversion gateways are the ideal solution for distributed networks when adding a remote rack becomes too costly.

The PLX30s are stand-alone DIN-rail mounted gateways that provide one Ethernet port for communication, remote configuration and diagnostics, and up to four (4) serial communication ports. The PLX30 gateways also come with an SD Card slot (SD card optional) for storing configuration files. In the event of a failure the SD card can be transferred to another gateway reducing downtime. These gateways contain a 4000 word database, includes a wide input power range (10 Vdc – 36 Vdc), and an extended temperature range (-25°C to 70°C). The PLX30 gateways include all the necessary cables required for communication.


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Caractéristiques Avantages

  • 4000 Word database
  • Status data
  • Node Health
  • 10/100 Mb Ethernet port with Auto Cable Crossover Detection
  • Data Analyzer for Modbus Serial Network




Power Supply

24 Vdc nominal
10Vdc to 36 Vdc allowed
Positive, Negative, GND Terminals

Current Load

24 Vdc @ 300mA nominal
10 to 36 Vdc @ 610mA maximum

Operating Temperature

-25°C to 70°C (-13°F to 158°F )

Storage Temperature

-40°C to 80°C (-40°F to 176°F )


IEC 60068-2-27; 15G @ 11ms, 3-Axis (Operational)
IEC 60068-2-27; 30G @ 18ms, 3-Axis (Non-Operational)


IEC 60068-2-6; 5G @ 10Hz to 150Hz

Relative Humidity

5% to 95% RH with no condensation

(Height x Width x Depth)

Standard: 5.38 in x 1.99 in x 4.38 in
(13.67 cm x 5.05 cm x 11.13 cm)

LED Indicators

Configuration (CFG) and Error (ERR) Communication Status
Power (PWR) and Hardware Fault (FLT)
Network Status (NS) EtherNet/IP™ Class I or Class III Connection Status (EtherNet/IP Only)
Module Status (MS) Module Configuration Status
(EtherNet/IP Only)
Ethernet Communication Port Link/Activity and 100mbit
Serial Communication Port Receive (RX) and Transmit (TX)

Ethernet Port

10/100Mbit half-duplex RJ45 Connector Electrical Isolation 1500 Vrms at 50 Hz to 60 Hz for 60 seconds, applied as specified in section 5.3.2 of IEC 60950: 1991
Ethernet Broadcast Storm Resiliency = less than or equal to 5000 [ARP] frames-per-second and less than or equal to 5 minutes duration

Serial Port(S)

Note: The number of serial communication ports depends on the gateway type, and the combination of protocols.

Serial Port Isolation

2500 Vrms port signal isolation per UL 1577
serial port communication signal uses RF(Radio Frequency) modulation signal as isolation media, IC chip model is SiliconLabs Si844x(Si8440,Si8441,Si8442).

Shipped With Each Unit

2.5 mm screwdriver
J180 Power Connector
(1 to 4) RJ45-DB9M Serial Adapter Cable (serial protocol only)
(1 to 4) DB9 to Screw Terminal Adapter (serial protocol only)
5’ straight-through Ethernet cable (Grey)


Spécifications Protocole MBS

Spécifications Protocole MBS

Protocol Specifications

Maître Modbus

Un port configuré comme maître Modbus émet activement des commandes Modbus à d’autres nœuds sur le réseau Modbus

Liste des Commandes

Jusqu’à 100 commandes par port maître, chacune entièrement configurable (code fonction, numéro d’esclave, adresse et quantité).

Envoi des Commandes

Les commandes peuvent être envoyées de façon continue ou sur changement de valeur (écriture seulement).

Données d’état

Codes d’erreurs disponibles sur une base de commande individuelle. Une liste de statuts d'esclave est maintenue par port maître Modbus actif.

Esclave Modbus

Un port configuré comme esclave Modbus agît comme un nœud et permet à un maître distant d’interagir avec toutes les données contenues dans le module

Adresse de nœud

1 à 247 (réglable par logiciel)

Données d’état

Codes d'erreurs de communication, compteurs de succès/échecs et états des ports sont disponibles

PLX30-MBTCP Protocol Secifications

Protocol Specifications

EtherNet/IP® Specifications

 Number of Class 3 Server Connections


Supported PLC Types

PLC2, PLC5, SLC, ControlLogix

Supported Message Types


Number of Class 3 Client Connections



Number of Class 1 I/O Connections



I/O connection sizes


Max RPI time

5ms per connection

CIP Services Supported

0x4C - CIP Data Table Read
0x4D - CIP Data Table Write

Command List

Support for 100 commands per Client, each configurable for command type, IP address, register to/from addressing and word/bit count.

Command Sets

PLC-2/PLC-3/PLC5 Basic Command Set
PLC5 Binary Command Set
PLC5 ASCII Command Set
SLC500 Command Set


Modbus TCP/IP Specifications

Supported Modbus Function Codes

1: Read Coil Status
2: Read Input Status
3: Read Holding Registers
4: Read Input Registers
5: Force (Write) Single Coil
6: Preset (Write) Single Holding Register

15: Force (Write) Multiple Coils
16: Preset (Write) Multiple Holding Registers
22: Mask Write Holding Register (Slave Only)
23: Read/Write Holding Registers (Slave Only)

Supported Clients


Supported Servers





Command List

Up to 160 fully configurable Client commands

Status Data

Error codes reported individually for each command

Command List Polling

Each command can be individually enabled or disabled; write-only-on-data-change is available


Modbus Serial Specifications

Command List

Up to 100 commands per Master port, each fully configurable for Function Code, slave address, register to/from addressing and word/bit count.

Supported Modbus Function Codes

1: Read Coil Status
2: Read Input Status
3: Read Holding Registers
4: Read Input Registers
5: Force (Write) Single Coil
6: Preset (Write) Single Holding Register

15: Force (Write) Multiple Coils
16: Preset (Write) Multiple Holding Registers
22: Mask Write Holding Register (Slave Only)
23: Read/Write Holding Registers (Slave Only)

Software configurable communication parameters

Baud rate: 110 baud to 115.2 kbps Parity: None, Even, Odd Data Size: 7 or 8 bits Stop bits: 1 or 2 RTS on/off delay: 0 to 65535 milliseconds
Modbus Modes RTU mode (binary) with CRC-16ASCII mode with LRC error checking, Floating point data movement supported including configurable support for Enron and Daniel implementations

Polling of Command List

Configurable polling of command list, including continuous and on change of data, and dynamically user or automatic enabled.

Status Data

Error codes available on an individual command basis. In addition, a slave status list is maintained per active Modbus Master port.

Node Address

1 to 247 (software selectable)

RS Interface

RS232, RS422, and RS485


Ex Certificate (ATEX Directive) 84,06 kB Dernière Modification 22/05/2015
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