DH-485 to HART Multi-drop 8 channel
5127-DH485-HART
The ProLinx DH-485 to HART Multi-drop Gateway creates a powerful connection between devices on a DH-485 network and HART devices. This stand-alone DIN-rail mounted protocol gateway provides one DH-485 configurable serial port and up to eight configurable HART Multi-drop channels.
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.
The HART protocol driver works as a Master on four (HART) or eight channels (HART2 – not available on certain configurations) per interface card, depending on implementation. Each channel is individually configurable.
- Features and Benefits
- Applications
- Specifications
- Hardware
- Downloads
- Protocols
- Videos
- Certifications
Features and Benefits
Applications
The DH485-HART modules are the ideal solution for the many applications where DH-485 connectivity can be used to integrate HART Multi-drop devices into a system. The DH-485 gateway is a powerful module designed with both Master and Slave support, enabling easy connection to Rockwell Automation PLCs (CLX, SLC, PLC, CPLX, and similar devices). In combination with the HART device support, the module provides a very powerful interface to the over two million HART 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 DH485-HART modules are the ideal solution for the many applications where DH-485 connectivity can be used to integrate HART Multi-drop devices into a system. The DH-485 gateway is a powerful module designed with both Master and Slave support, enabling easy connection to Rockwell Automation PLCs (CLX, SLC, PLC, CPLX, and similar devices). In combination with the HART device support, the module provides a very powerful interface to the over two million HART 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 |
| 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% (without condensation) |
| Dimensions |
Standard:
Extended: |
| LED Indicators |
Power and Module Status
(Ethernet-equiped Gateways Only) |
| Configuration Serial Port |
DB-9M RS-232 only |
| Ethernet Port (Ethernet modules only) |
RJ45 Connector 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 |
| HART Interface |
Four (4) HART Multi-drop channels Screw terminals for each channel |
|
24 VDC power supply |
Must have sufficient current capacity to supply all loop-powered HART devices Screw terminals for 24 VDC available on HART connector, supplied with the gateway, for loop-powered configurations |
| Shipped with Each Unit |
Mini-DIN to DB-9M serial cables |
Downloads
| ProSoft Configuration Builder (PCB) | ||
| DH485 HART Datasheet | 61.72 kB | Last Modified 11/07/2014 |
| DH485 Driver Manual | 1.11 MB | Last Modified 12/10/2009 |
| HART Driver Manual | 922.47 kB | Last Modified 09/15/2017 |
Protocols
HART Protocol Specification
The HART protocol driver works as a Master on four (HART) or eight channels (HART2 not available on certain configurations) per interface card, depending on implementation. Each channel is individually configurable.
Protocol Specifications
The HART Master Protocol exists in 4 channel implementations with HART2 allowing 8 channels. This driver can be configured on an individual channel basis to operate as a HART Master Station and supports all the available HART commands including Universal, Common Practice and Device Specific Commands. Each HART channel is independently configured to interface with the internal database in the module.
The auto-poll mode allows the module to automatically collect data from each HART instrument on the channel and store the data in the module's database without the use of user commands. The module automatically generates HART commands 0, 3, 13, 14 and 15.
| General Parameters |
|
| Communication parameters |
Number of HART Preambles: 2 to 50 Enable Handheld: Y or N Primary Master: Y or N |
| Configurable Parameters per Channel |
Auto-Poll Enable, Short / Long Address Retries, Retries After Error Poll Time After Error, Number of Commands, Slave List Error Pointer |
| HART Driver |
|
| Command List |
Up to 100 fully configurable commands per channel |
| Polling of command list |
User configurable polling of commands, including disabled, continuous, on change of data (write only) and dynamically user or automatic enabled. |
HART® is a registered trademark of the HART Communication Foundation
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 |
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
| CB Safety | 35.78 kB | Last Modified 08/27/2012 |
| CE Mark | 92.34 kB | Last Modified 03/07/2019 |
| Country Approval - Eurasian Customs Union Conformity (EAC) (Wired) | 1.92 MB | Last Modified 07/10/2020 |
| Country Approval - Eurasian Customs Union Conformity (EAC) (Wired) | 1.92 MB | Last Modified 07/10/2020 |
| UL/cUL; Class 1, Div 2 | 1.08 MB | Last Modified 03/31/2020 |
| UL/cUL; Class 1, Div 2 (Canada) | 1.10 MB | Last Modified 07/02/2013 |