Order Now at (520) 394-7724 

Datalink GW1000-DHPM: Modbus to DH+ Converter

GW1000 Ethernet to DH+ gateway
Datalink Technologies

Modbus to DH+ Network
(Modbus RTU to DH+)
$1,250 USD List
The GW1000-DHPM provides high speed interconnectivity between an Allen-Bradley DH+ and a Modbus network. The -DH+/Modbus can be any station on DH+ and can be set to either Modbus Master or Modbus Slave. Master mode enables any DH+ station to read / write up to 100 words (per message) to any 4xxxx or 0xxxx register, and to read up to 100 words from the 1xxxx and 3xxxx registers at any Modbus Slave address from 1 to 255. Slave mode enables a Modbus Master to read or write up to 1600 coils or 100 registers (per message) to bit or integer files in any PLC-5 station on DH+ (except 0). Modbus commands to address 0 can be “broadcast” to a selected range of DH+ stations.

Modbus Plus Connectivity:
Provides an interface to Modbus Plus via a Modicon BM85 Modbus Plus Bridge/Multiplexer

Multiple Modbus Protocols:
Master, Slave, RTU and Ascii

Compact and Lightweight:
Small footprint for easy installation

Flexible Serial Interfacing:
RS232C (RS422/RS485 options available)

Easy Configuration:
All parameters are menu-driven

Fastest Throughput:
Serial communications at up to 230.4 Kbaud

List Price
$1250 USD


Physical Dimensions
Size: 0.90″ H x 4.65″ D x 3.98″ W (22.8mm x 118.3mm x 101.0mm)
Weight: 0.66lbs (0.3kg)
Power: 9-27 VDC; Less than 2 Watts

Plastic enclosure; Freestanding or DIN rail mounting with integrated clip

Operating: +32 F to 122 F (0C to +50 C)
Storage: -40 F to +185 F (-40C to +85C)
Humidity: 5% to 95% non-condensing


A-B Channel: Allen-Bradley Data Highway Plus
Ethernet Channel: TCP/IP – 100-Base-T
Serial Channel: DF1

A-B Channel: Synchronous, DH+/RIO at 57.6, 115.2, and 230.4 Kbaud
Ethernet Channel: 100-Base–T; TCP/IP

Integrated web server for configuring communications parameters.

DH+ status
Serial Status
Serial RX
Serial TX
Ethernet Activity
Ethernet Link


Connections – Top
– 3-pin power – 3.81mm pitch removable screw terminal plug
– 3-pin A-B DH+/RIO – 5.08mm pitch removable screw terminal plug
– RJ45- EthernetConnections – Bottom
– 5-pin RS485/RS422 – 3.81mm pitch removable screw terminal plug
– D9 – RS232 port

Home breadcrumb arrow Gateway GW1000-DH+ breadcrumb arrow Datalink GW1000-DHPM: Modbus to DH+ Converter