Ascii to DH+ Network (DH+ Ascii)
GW1000 Documentation
GW1000 User Manual v1.03 (pdf)
GW1000 DHP1 RSLINX Quick Start (pdf)
Windows XP Installation Guide (pdf)
Product Feature:
NEW - GW1000
DF1 Interface to DH+ GW1000-DHP1
and AB Ethernet to AB’s DH+ Network

ASCII Interface to DH+
AB Replacements
AB 1770-KF2 AB 1770-KF3
SST 5136-SD AB 1784-pktx
AB 1784-PCMK AB 1784-ktx
Gateway to Ethernet TCP/IP
Ethernet TCP/IP to DH+
Ethernet TCP/IP to DH-485
Link to Ethernet /IP
Bridge to Modbus TCP /IP
DF1 Converter to AB
Ascii Converter to DH
Protocol Converter to Modbus
Connect PC / Laptop to AB DH+ / DH-485
Ascii to DH+ Network (DH+ Ascii)

The newest DataLink GW1000-DHPA (ASCII DH+) is an amalgamation of two existing products: the GW1000 and the GW1000. The improved compact freestanding ASCII serial interface gives customers the ability to send as well as receive ASCII messages via A-B Data Highway Plus (DH+).

The GW1000 facilitates ASCII data transfer to any PLC including models without an ASCII port, such as A-B’s ControlLogix.

A block of data is temporarily stored in the ASM’s 240-byte buffer until the buffer is filled or an ASCII carriage return is detected in the data. Once the data is terminated, the bytes are transmitted to the PLC's integer files in DH+ protocol format. All bytes are retransmitted in the order they were received minus the carriage return.

The GW1000 now has the added functionality of the gw1000, enabling ASCII messages stored in PLC-5 data tables to be transferred over DH+ (Data Highway Plus) to a serial printer or message display.

The -ASM is specifically designed to buffer DH+ (Data Highway Plus) message commands sent to its station address from any PLC-5. The transmitted ASCII bytes are then flipped to produce messages on the printer in the same order as the ASCII data is entered and displayed in the PLC.


Flexible System Layout: scanners, printers, and message displays located anywhere on a DH+ network can send and receive ASCII messages to and from PLCs in other locations

Compact and Lightweight: Small footprint for installation convenience

Easy Configuration: All parameters are menu-driven

High Speed: Serial speeds from 300 baud to 19.2 Kbaud and also 57.6 Kbaud

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 or Remote I/O
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- Ethernet

Connections – Bottom
- 5-pin RS485/RS422 – 3.81mm pitch removable screw terminal plug
- D9 - RS232 port

Technical Sales
Call or email for any technical support issues or pricing inquiries

Toll free


(360) 306-5878
(9:00am EST)
Our Guarantee
Satisfaction Guaranteed.

Your complete satisfaction with all our products is essential.

We offer a 30-day money-back guarantee and a five-year warranty on parts and service.
GW1000 Controllers
Serial/USB to DH+ & DH-485:
Ethernet to DH+ & DH-485:
Modbus Connectivity
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