Printer friendly version of this page. Find a Distributor near you.
5201-Ethernet & single-Serial

Modbus TCP/IP to DH-485 Gateway

5201-MNET-DH485

Limited Availability: Product with low inventory remaining. More Info

The ProLinx Modbus TCP/IP to DH-485 Gateway creates a powerful connection between devices on a Modbus TCP/IP network and a DH-485 device. This stand-alone DIN-rail mounted protocol gateway provides one DH-485 configurable serial port and one Ethernet port.

The Modbus TCP/IP protocol driver can interface many different protocols into Schneider Electric Quantum processors as well other solutions supporting the protocol. The MNET driver supports Client and Server connections, and when coupled with the Web option provides a web/ftp interface as well.

The ProLinx DH485 protocol driver supports the Master and the Slave modes of the protocol, providing powerful data transfer capability with Rockwell Automation PLCs and HMIs. User configurable data mapping make the interface an easy to use and powerful data transfer tool.

Features and Benefits

Applications

The MNET-DH-485 modules are the ideal solution for the many applications where Modbus TCP/IP connectivity can be used to integrate a DH-485 device into a system. The Modbus TCP/IP gateway is a powerful module designed with both Client and Server support, enabling easy connection to other Modbus devices (Modicon processors and many others). In combination with the DH-485 device support, the module provides a very powerful interface to the many DH-485 devices which are in use in the industrial marketplace today. Applications for the module are found in most industries, especially the Manufacturing, Oil and Gas, Electrical Power and Food Processing.

Applications

The DH-485-MNET modules are the ideal solution for the many applications where Modbus TCP/IP connectivity can be used to integrate a DH-485 device into a system. The Modbus TCP/IP gateway is a powerful module designed with both Client and Server support, enabling easy connection to other Modbus devices (Modicon processors and many others). In combination with the DH-485 device support, the module provides a very powerful interface to the many DH-485 devices which are in use in the industrial marketplace today. Applications for the module are found in most industries, especially Manufacturing, Oil and Gas, Electrical Power and Food Processing.

Specifications

Internal Database

The ProLinx module contains an internal database that consists of areas for application data, status information, and configuration information.

The internal database is shared between all ports on the module and is used as a conduit to pass information from a device on one network to one or more devices on another network.

Application Data Area

The data area is used to store and retrieve data by the protocol drivers and for data exchange between protocols. The database is used as a source for write commands to remote devices and holds data collected from the remote devices. Commands defined in the configuration file (stored in the configuration data area) control how the data is to be handled in the database.

Status Data Area

This area is used to store error codes, counters, and port status information for each port.

Configuration Data Area

This area contains module configuration information such as port configuration, network information, and command configuration. This configuration file is downloaded to, or uploaded from, this area.

Hardware

Specification

Description

Power Supply

24 VDC nominal
18 to 32 VDC allowed
Positive, Negative, GND Terminals
2.5 mm screwdriver blade

Current Load

500 mA max @ 32 VDC max

Operating Temperature

-4° F to 122° F (-20° C to 50° C)

Storage Temperature

-40° F to 185° F (-40° C to 85° C)

Relative Humidity

5% to 95% (with no condensation )

Dimensions

Standard:
 5.20 in H x 2.07 in W x 4.52 in D (13.2 cm x 5.25 cm x 11.48 cm)
Extended:
 5.20 in H x 2.73 in W x 4.52 in D
(13.2 cm x 6.934 cm x 11.48 cm)

LED Indicators

Power and Module Status
Application Status
Serial Port Activity
Serial Port Error Status

Configuration Serial Port

DB-9M RS-232 only
No hardware handshaking

Ethernet Port (Ethernet modules only)

10Base-T half duplex RJ45 Connector
Link and Activity LED indicators
Electrical Isolation 1500 V RMS at 50 Hz to 60 Hz for 60 s, 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

Application Ports

Modbus Plus Connector
Two DB9 Female Standard Modbus Plus connectors

Serial Port Isolation

2500 V RMS port signal isolation per UL 1577
3000 VDC min. port to ground and port to logic power isolation

Shipped with Each Unit

Mini-DIN to DB-9M serial cables
4 ft RS-232 configuration cable
2.5mm screwdriver
CD (docs and Configuration utility)
RS-422/485 DB-9 to Screw Terminal Adaptor (1 or 4, depending on ports)

Downloads

ProSoft Configuration Builder (PCB)
MNET DH485 Datasheet 79.44 kB Last Modified 04/26/2010
MNET Protocol Manual 631.11 kB Last Modified 02/16/2012
DH485 Driver Manual 1.11 MB Last Modified 12/10/2009

Protocols

MNET Protocol Specification


The Modbus TCP/IP protocol driver can interface many different protocols into Schneider Electric Quantum processors as well other solutions supporting the protocol. The MNET driver supports Client and Server connections, and when coupled with the Web option provides a web/ftp interface as well.


Protocol Specifications

The Modbus TCP/IP driver interfaces with a common internal database in the module. This permits the sharing of data between the Modbus TCP/IP and other networks and devices.

Modbus TCP/IP Server

General

Server supports up to 5 independent connections each to Modbus TCP/IP clients on Service Port 502 using the standard MBAP protocol, and Service Port 2000.

Configurable Parameters

Module IP Address
Modbus address offsetting

Modbus TCP/IP Client

General

Actively reads and writes data with Modbus TCP/IP compatible devices.

One client connection (up to 100 servers/devices with 100 commands)

Configurable parameters

Number of active commands, Min Command Delay, Response Timeout, Retry Count, Command Error Pointer

Command List

Up to 100 fully configurable commands on the Client port


DH485 Protocol Specification


The ProLinx DH485 protocol driver supports the Master and the Slave modes of the protocol, providing powerful data transfer capability with Rockwell Automation PLCs and HMIs. User configurable data mapping make the interface an easy to use and powerful data transfer tool.


Protocol Specifications

The DH-485 protocol in its native form is a peer to peer token passing network. The ProLinx DH-485 driver accesses the network functioning either as a Master or as a Slave.

General Protocol Information

Error Checking

BCC and CRC

Communication Parameters

Local Station ID: 0 to 31
Port 0 Baud Rate: 110 to 38.4K baud
Port 1 Baud Rate: 110 to 19200 baud
Stop Bits: 1 or 2
Data Size: 7 or 8 bits
Parity: None, Even, Odd
RTS Timing delays: 0 to 65535 milliseconds

DH-485 Slave Mode

In Slave mode, the module accepts commands from one or more Masters to read/write data stored in the module's internal data memory. In this mode, the ProLinx unit is answering DH-485 commands and has the appearance of an SLC processor to the network.

DH-485 Master Mode

In Master mode, the ProLinx DH-485 driver will actively gather data from other devices on the network, controlling the read/write data transfer between the gateway and other DH-485 devices, such as SLC processors. Data transfer can be initiated and executed with the other devices without any ladder logic being required in the Rockwell Automation slave hardware.

DH485 Functioning as a Master

Command List

Up to 100 command per master port, each fully configurable for function, slave address, register to/from addressing and word/bit count

Polling of command list

User configurable polling of commands, including disabled, continuous and on change of data (write only)


Certifications

Ex Certificate (ATEX Directive) 114.27 kB Last Modified 11/11/2013
CB Safety 35.78 kB Last Modified 08/27/2012
CE Mark 92.31 kB Last Modified 02/22/2013
Russian GOST-R 7.07 MB Last Modified 02/22/2013
GOST-R Declaration of Conformity 6.68 MB Last Modified 02/22/2013
UL/cUL; Class 1, Div 2 1.08 MB Last Modified 07/02/2013
UL/cUL; Class 1, Div 2 (Canada) 1.10 MB Last Modified 07/02/2013