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DL2000-CMX: Modbus to DH+


 
The DL2000-CMX provides high speed interconnectivity between an Allen-Bradley DH+ and a Modbus network. The -CMX can be any station on DH+ and can be set to be either Modbus Master or Modbus Slave. Master mode enables any DH+ station to read or write up to 100 words (per message) to any 4xxxx register 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.

DL2000 User's Guide.
DL2000-CMX Application Notes.

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 and RS422/RS485

Easy Configuration:
All parameters are menu-driven

Fastest Throughput:
Serial communications at up to 115.2 Kbaud

Specifications:
 
Interfaces  
Channel A: Synchronous; SDLC Transformer-coupled  
Channel B: Asynchronous; RS232C/RS422/RS485  

Physical Dimensions
Size: 7.5" D x 5.5" W x 1.5" H
(190mm x 140mm x 38mm)
Weight: 2.2lbs (1kg.)
PowerAC: 110/220 VAC (+/- 25%); 50/60 Hz; 5 Watts
DC: 10 - 35 VDC; 5 Watts

Installation
Freestanding; Metal enclosure

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

Protocols
Channel A: Allen-Bradley Data Highway Plus
Channel B: Modbus Master or Modbus Slave in either
RTU or ASCII modes

Configuration
PC program software menu for communications
parameters
Selection
Jumpers select supply voltage and serial interface type

Indicators
1 LED for power-on; 5 LEDs for communications activity

Switches
Reset and Configure/Diagnostics mode pushbuttons

Error Detection
Channel A: CRC
Channel B & C: BCC or CRC

Communications
Channel A: Synchronous, DH+ at
57.6 Kbaud
Channel B: Asynchronous; 300 Kbaud to
115.2 Kbaud; High-speed 57.6
Kbaud selection

Hardware
Z180 Processor; 32 Kbyte socketed EPROM;
32 Kbyte RAM; 256 byte EEPROM;  
1 DH+ and 2 serial interface connectors

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Last modified: November 30, 2002   Proud Sponsor of Dallas Jazz