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Installation Instructions
DH485/RS-232C Interface Module
(Catalog Number 1747-KE)
Inside...
page
Important User Information ....................................................... 2
For More Information ................................................................ 3
Hazardous Location Considerations .......................................... 4
Environnements dangereux........................................................ 4
Interface Module Overview ....................................................... 5
Hardware Features ..................................................................... 5
Using a Modem with Your Interface Module ............................ 8
Choosing the Module's Functionality........................................ 9
Setting the Module's Functionality............................................ 9
Configuring the CONFIG Port ................................................ 11
Configuring the DF1 Port ........................................................ 12
Installing the Module ............................................................... 13
Complete the Installation Process............................................ 19
Specifications........................................................................... 21
Publication 1747-IN006A-US-P
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Summary of Contents for Allen-Bradley DH485/RS-232C
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Page 1: Table Of Contents
Installation Instructions DH485/RS-232C Interface Module (Catalog Number 1747-KE) Inside… page Important User Information ............2 For More Information ..............3 Hazardous Location Considerations .......... 4 Environnements dangereux............4 Interface Module Overview ............5 Hardware Features ..............5 Using a Modem with Your Interface Module ......8 Choosing the Module’s Functionality........ -
Page 2: Important User Information
Since there are many variables and requirements associated with any particular installation, Allen-Bradley does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication. -
Page 3: For More Information
DH485/RS-232C Interface Module For More Information Related Publications Refer to this Document Pub. No. A more detailed description on how to DH485/RS-232C 1747-6.12 install and use your RTD/Resistance Interface Module User Input Module. Manual A more detailed description on how to SLC 500™... -
Page 4: Hazardous Location Considerations
DH485/RS-232C Interface Module Hazardous Location Considerations This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or non-hazardous locations only. The following WARNING statement applies to use in hazardous locations. EXPLOSION HAZARD WARNING • Substitution of components may impair suitability for Class I, Division 2. -
Page 5: Interface Module Overview
DH485/RS-232C Interface Module Interface Module Overview The DH485/RS-232C Interface Module, catalog number 1747-KE, is a communication interface module that acts as a bridge between DH485 networks and devices requiring DF1 protocol. The DF1 port on the interface module can be configured for RS-232/423, RS-422, or RS-485 devices. - Page 6 DH485/RS-232C Interface Module Communication Ports CONFIG - used to configure the module with an ASCII terminal. This serial port accommodates RS-232/423, RS-422, and RS-485 communication interfaces. The CONFIG port is capable of operating at 300, 600, 1200, 2400, 4800, 9600, and 19200 baud.
- Page 7 The DF1 port is not transmitting or receiving signal,s or the module is in Configuration mode. FAULT A system problem was detected during diagnostics. Cycle power to reset. If LED remains on, contact your Allen-Bradley representative. No system problems are detected during diagnostics. BA LOW The voltage of the battery that backs up configuration RAM is low.
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Page 8: Using A Modem With Your Interface Module
DH485/RS-232C Interface Module Jumpers JW1 allows you to select the communication interface for the CONFIG port. See page 11. JW2 allows you to select the communication interface for the DF1 port. See page JW4 allows you to select the functionality and mode of the interface module. -
Page 9: Choosing The Module's Functionality
DH485/RS-232C Interface Module Choosing the Module’s Functionality Your series B interface module has the ability to function as a series A interface module. This feature may be important to you if you are replacing a series A module with a series B module. - Page 10 DH485/RS-232C Interface Module If Configuring with an ASCII Terminal Configuration of the interface module with an ASCII terminal is allowed only when the JW4 jumper is in Configuration mode. Place the module in the Configuration mode that corresponds to the functionality you chose for the interface module, as shown below.
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Page 11: Configuring The Config Port
DH485/RS-232C Interface Module Configuring the CONFIG Port Jumper JW1 selects the following electrical interface for the CONFIG port: • RS-232/423 (default) • RS-422 • RS-485 RS-232/423 (default) Top Edge of Daughter RS-422 Top Edge of Daughter RS-485 Top Edge of Daughter... -
Page 12: Configuring The Df1 Port
DH485/RS-232C Interface Module Configuring the DF1 Port Jumper JW2 selects the following electrical interface for the DF1 port: • RS-232/423 (default) • RS-422 • RS-485 Bottom Edge of Daughter RS-232/423 (default) Bottom Edge of Daughter RS-422 Bottom Edge of Daughter... -
Page 13: Installing The Module
DH485/RS-232C Interface Module Installing the Module ATTENTION Do not install or remove the 1747-KE module from the SLC 500 chassis until all power dissipates from the SLC 500 power supply (approximately 10 seconds). 1. Align the full-sized module circuit board with the chassis card guide. The first slot (slot 0) of the first chassis is reserved for the processor. - Page 14 DH485/RS-232C Interface Module Connect Cable to CONFIG or DF1 Ports The CONFIG and DF1 ports communicate to user devices through RS-232/423, RS-422, and RS-485 communication modes. The communication mode is selected by setting jumpers JW1 and JW2 as described on pages 11 and 12.
- Page 15 DH485/RS-232C Interface Module The following illustrations show wiring diagrams for the RS-232/423, RS-422, and RS-485 communications. RS-232/423 DTE to DCE (Non-Modem Hardware Handshake to Interface Module Peripheral (DTE) (DCE) RS-232/423 DTE to DCE (Modem Hardware Handshake to DCE) Peripheral Interface Module...
- Page 16 DH485/RS-232C Interface Module RS-232/423 DTE to DCE (No Handshake to DCE) Interface Peripheral (DTE) (DCE) (1) Connect DSR to DTR and CTS to RTS when using devices that cannot disable their hardware handshaking. RS-232/423 DTE to DCE (Soft or No Handshake to...
- Page 17 DH485/RS-232C Interface Module RS-422 Interface Module Peripheral TXD- RXD- RXD- TXD- RXD+ TXD+ TXD+ RXD+ (DTE) RS-485 Interface Module Peripheral TRXD- TRXD- TRXD+ TRXD+ (DTE) Publication 1747-IN006A-US-P...
- Page 18 DH485/RS-232C Interface Module Connect Cable to DH485 Port The DH485 port can communicate to user devices through the DH485 Communication mode. Use a 1747-C10, 1747-C11, or 1747-C13 interface cable to connect the module to a link coupler interfaced with the DH485 network.
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Page 19: Complete The Installation Process
(1747-C13) Complete the Installation Process 1. Configure your module using an ASCII terminal or the SLC backplane. Refer to the DH485/RS-232C Interface Module User Manual, publication number 1747-6.12 for detailed instructions on configuring your module. ATTENTION Do not install or remove the 1747-KE module from the SLC 500 chassis until all power dissipates from the SLC 500 power supply (approximately 10 seconds). - Page 20 DH485/RS-232C Interface Module 2. If you configured your module using an ASCII terminal, place the module into Run mode. Follow the steps below: A. Remove the module from the chassis. The removal is reverse of the installation procedure. B. Place your module in Run mode using JW4, as shown below.
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Page 21: Specifications
DH485/RS-232C Interface Module Specifications Power Consumption Voltage Current Required 5V dc .150 A 24V dc (1) (2) .040 A (1) If the 1747-AIC Link Coupler is connected to the 1747-KE module with a 1747-C11 cable, then the link coupler draws its power (0.085 A at 24V dc) through the module. Add this to the listed current requirements for the 1747-KE module. - Page 22 DH485/RS-232C Interface Module Port Isolation Port Isolation Isolation Voltage CONFIG Backplane to Port 500V dc Backplane to Port 500V dc CONFIG and DF1 CONFIG to DF1 500V dc The DH485 Port is not isolated. IMPORTANT Real Time Clock/Calendar Accuracy Specification...
- Page 23 DH485/RS-232C Interface Module Notes: Publication 1747-IN006A-US-P...
- Page 24 SLC 500 is a trademark of Rockwell Automation. Publication 1747-IN006A-US-P - February 2000 40072-082-01 (A) © 2000 Rockwell International Corporation. Printed in the U.S.A.