Data-Linc Group DLM4500 User Manual

USER GUIDE

DLM4500

Dial-Up/Leased Line Modem

OMMUNICATIONS

ATA

NDUSTRIAL

It is essential that all instructions contained in the User Guide are followed precisely to ensure proper operation of equipment.

DLM4500 User Guide

Patents

This device covered by one or more of the following patents: 6,031,867; 6,012,113; 6,009,082; 5,905,794; 5,864,560; 5,815,567; 5,815,503; 5,812,534; 5,809,068; 5,790,532; 5,764,628; 5,764,627; 5,754,589; D394,250; 5,724,356; 5,673,268; 5,673,257; 5,644,594; 5,628,030; 5,619,508; 5,617,423; 5,600,649; 5,592,586; 5,577,041; 5,574,725; D374,222; 5,559,793; 5,546,448; 5,546,395; 5,535,204; 5,500,859; 5,471,470; 5,463,616; 5,453,986; 5,452,289; 5,450,425; D361,764; D355,658; D355,653; D353,598; D353,144; 5,355,365; 5,309,562; 5,301,274 Other Patents Pending.

DATA-LINC GROUP

PN 161-10008-001A

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Table of Contents

DLM4500 User Guide

Page

Introduction 3 Connection Points and LED Descriptions 4 Equipment Connections and Interface Descriptions 5 Quick Start 7 Quick Configuration 10

Technical Specifications 12 Technical Support 14

Return Material Authorization 14 Contact Information 14

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Appendix A Enclosure Dimensions 15

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Appendix B Complete AT Commands 16 Complete S-Registers 27

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DLM4500 User Guide

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DATA-LINC GROUP

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DLM4500 User Guide

Introduction

The Data-Linc Group DLM4500 modem is designed to work on public dial-up telephone systems. The modem will work on both dial-up voice grade phone lines and leased lines. It connects to a normal telephone service using a RJ-1 1 jack (2 wire) and connects to the users equipment via a 9-pin DB-9 connector utilizing RS232 signals and screw terminals if a AE-485 (2-wire) or AE-422 (4-wire) unit.

The Data-Linc Group DLM4500 is a compact modem designed and manufactured to operate in industrial applications. It has a wide DC voltage input power range and the operating temperature range of this device is -40° to +70° C.

The mechanical and electrical specifications are listed in Appendix B. The DLM4500 has front panel LED indicators for Power (Red), Data In from user equipment (Y ellow), Data Out to users

equipment (Green), and Carrier Detect (Amber). The DLM4500 is configured using ‘A T’ style commands sent via the 9-pin port while the modem is in ‘Command Mode’.

Factory default is set at 9600 baud. All normal configurations are performed using the RS232 connection on the front panel even if the units are a AE-485 or AE-422 model.

A complete list of ‘AT’ commands are in appendix A. Note that all AT command character strings must end with a carriage return character (Enter key , ctrl M, 0xd hex).

Systems Examples

Diagram 1 Dial-Up

Diagram 2 Leased Line

Dial- Up Connec tion

to Te lco Netw ork

RS-232

LINE

Dial- Up Connec tion

to Te lco Netw ork

RS-232

LINE

Telco or Privat e

Lease d Line

DATA-LINC GROUP

(425) 882-2206

DATA

LINE

DLM4 500

RESET

POWER

- +

C PO

VDC

LINE

Master

Dial- Up Connec tion

to Te lco Netw ork

DATA-LINC GROUP

(425) 882-2206

DATA

DLM4 500

RESET

POWER

- +

C PO

VDC

Remote 0

RS-232

DATA-LINC GROUP

(425) 882-2206

DATA

DLM4 500

RESET

POWER

- +

C PO

VDC

Dial- Up Connec tion

to Te lco Netw ork

LINE

DATA-LINC GROUP

(425) 882-2206

DATA

DLM4 500

RESET

POWER

- +

C PO

VDC

Remote 1Remote 2

RS-232

DATA-LINC GROUP

(425) 882-2206

DLM4 500

C PO

Master

POWER

- +

VDC

LINE

DATA-LINC GROUP

(425) 882-2206

DLM4 500

C PO

POWER

- +

VDC

DATA

RESET

DATA

RESET

Remote

RS-232

PN 161-10008-001A

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Telco or Privat e

Lease d Line

RS-232

DATA-LINC GROUP

DLM4500 User Guide

Connection Points and LED Descriptions

Figure 1 Front Panel Connections – (Left to Right)

DATA-LINC GROUP

LINE

DATA

(425 ) 88 2-220 6

DLM4500

POWER

RESET

RJ-1 1 — Phone Line DB-9 — Data Port RS232

pin 1 CD Out (Carrier Detect) pin 2 Data Out pin 3 Data In pin 4 DTR In (Data terminal ready) pin 5 Signal Ground pin 6 DSR Out (Data set ready) pin 7 RTS In (Request to send) pin 8 CTS (Clear to send) pin 9 N/C

Push-Button Switch — Modem Reset Led Array

O - Green (data out/line in) I - Yellow (data in/line out) C - Amber (line carrier detect) P - Red (DC power)

2-Position Terminal Block — DC Power In (note the polarity + and –)

- + VDC

Figure 2 Rear Panel Connections – AE-485 and AE-422 (when option is installed)

12 34

(AE-485) - + (AE-422) DO - DO + DI - DI +

AE-485 AE-422 1 N.C. 1 DO - (Data Out -) 2 I/O - (Data in/out -) 2 DO + (Data Out +) 3 I/O + (Data in/out +) 3 DI - (Data In -) 4 N.C. 4 DI + (Data In +)

DATA-LINC GROUP

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DLM4500 User Guide

Equipment Connections

The DLM4500 can be purchased with three types of serial interfaces. RS232 only (standard), AE-422 4-wire (optional), or AE-485 2-wire (optional). All unit s have the RS232 connector on the front. This is always used to configure the modem. The AE-422 and AE-485 connections are on the rear of the unit. The units can have the RS232 connected at the same time as the AE-485 or AE-422, but you can not send data into both the front and rear connections at the same time or data collisions will occur.

RS232

The front RS232 connection is built as a DCE configuration. For a RS232 connection, use a cable that matches the user equipment. If the users equipment is also a DCE device a null

modem cable must be used. If it is a DTE device then a straight through cable will work.

AE-422

The AE-422 connections consist of a wire p air for data out, and a wire pair for dat a in. Both pairs have a plus (+) and a minus (-) polarity . To make a AE-422 connection, wire the DLM4500 Data In pair to the Data out from connecting equipment. Verify that the Data-In LED on the front p anel is not on. If it is on all the time turn the wire pair over (reversed polarity). Data Linc Group AE-422 usually connect s the ‘+’ to an A cont act and connect s the ‘–‘ wire to a B contact.

Now send some data characters out of the connected equipment. The Data-In LED should flash. If it does not, check that the Data OUT from your equipment is connected to the Data-IN on the rear of the DLM4500.

If the DLM4500 In LED flashes then connect the DLM4500 Data-Out wire pair to the connecting equipment. Note the polarity of the connection made to the Data-In lines above. Use the same polarity on the Data-Out connection. V erify the plus and minus polarity .

If no LED’s blink, then some things can be wrong are: (Note: At high baud rates the blinking may be very fast and faint.)

a. The modem is not connected to the equipment. -Check the cables.

b. DC power is missing or wired backwards-Check the power supply .

c. The equipment you are using is set for the wrong communications port. Match the programs port settings to the

computers physical port number that the cable is plugged into.

d. The equipments program is not running.

e. The AE-422 wire p airs are not cross-connected TX-to-RX and RX-to-TX, or either wire pair in inverted (+and –

lines are swapped backwards). Note that there are 7 ways to miss connect the 2 pairs, and only one way to

connect them correctly.

f. The communications port is not an RS-422 device, or if using an RS-422 converter the converter is broken or

needs power.

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DATA-LINC GROUP

DLM4500 User Guide

AE-485

The AE-485 connection is made with one wire p air . This pair has a plus (+) and a minus (-) polarity. Af ter connecting the wire pair, send some dat a out of the connected equipment. The Data-In LED on the front panel should flash. If it does not, invert the wire pair and try again. Data-Linc Group AE-485 usually connects the ‘+’ to an A cont act and connects the ‘–‘ wire to a B contact.

If no LED’s blink, then some things that could be wrong. (Note: at high baud rates the blinking may be very fast or faint.)

a. The modem is not connected to the equipment. -Check the cables.

b. DC power is missing or wired backwards -Check power supply .

c. The equipment you are using is set for the wrong communications port. Match the programs port settings to the

computers physical port number that the cable is plugged into.

d. The equipments program is not running.

e. The AE-485 wire pair is inverted (+and – lines are swapped backwards).

f. The communications port is not an RS-485 device, or if using an RS-485 converter the converter is broken or

needs power.

DATA-LINC GROUP

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DLM4500 User Guide

Dial Up Quick Start and Testing

The following setup procedure is for a DLM4500 in Dial-Up mode. It assumes that two phone jacks of dial-up lines are available

1. Unpack the modem(s).

2. Verify that you have all of the p arts and cables to power and connect the modem to your equipment. You must be using a PC with an RS232 serial communication port. All three versions of the DLM4500 can be configured via the RS232 port.

3. Start a terminal program from the PC. Use a program like Hyperterminal or Procomm. Set the communications settings in the terminal program. You must set or verify the setting for at least the following parameters:

Serial Communications Port Mumber

Speed: Baud Rate

Character ormat: Parity , Number of Data bits, Number of S top bit s (n,8,1)

Handshake / Flow Control: None

Figure 3 Figure 4 Figure 5

4. Apply DC power to the DLM4500. Check the Power LED. It must be ON. If not check:

a. DC power is off or disconnected. Check for the presence of a nominal 12 volts DC on the power connector .

b. DC power is wired backwards. Check the source voltage with a voltmeter .

5. Reset the modem by pressing the Reset button on the front of the unit. This resets the modem and returns the AT command set to “last stored values” in NVRAM. The modem is ready to accept setup commands.

6. Connect the computer to the DLM4500 with a straight through 9 pin cable. DO NOT CONNECT THE PHONE LINE YET. Check that only the RED Power LED is On.

7. T ype the command string ‘AT’, then the Enter Key. The modem must reply with the characters ‘OK’. If this does not happen, recheck step 6 above.

8. The DLM4500 will be configured to your application if the information was supplied to Data-Linc Group during the order process. If not the Baud Rate and other paramater should be checked before connecting the modems (See Quick Configuration for help)

9. Get the phone number of the modem you want to connect with. Connect a standard phone to the phone line. Pick up the phone handset and verify that you get a dial tone. then remove the phone line from the phone and plug it into the DLM4500.

10. T ype the command string “ATDTxxx xxx xxxx” then the Enter Key . This is the standard dial string. (where the x’ s(x) are replaced with the 7 or 10 digit phone number)

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DATA-LINC GROUP

DLM4500 User Guide

1 1. The modem will now take the phone line Of f- hook and dial when the dial tone is received. The speaker will make several noises including the dial tone. If a connection is made the modems speaker will go off, the Amber (carrier) LED will illuminate and ‘Connect xxxx’ will display, where xxxx is the baud rate, and after that will display the error correction modes if any is used.. If using a terminal program the modem will automatically be set in data transfer mode.

Failure to make a connection can be the result of:

a. Wrong phone number. Use a regular phone to dial the number and listen to the response.

b. No matching modem at the other end of the phone line.

c. Other modem must be set to answer the phone.

d. Other modem must be turned on.

e. Other modem must be plugged in.

f. This modem must be commanded to dial.

g. Connected software must support a modem and must dial out.

h. Modems at each end must have matching or compatible settings

12. Data can now be sent in either direction.or if a jumper is placed in the DB-9 Connector between pins 2 and 3 any data sent from the master to the remote will be looped back. In this "Loopback" test the I and O LED’s should be blinking when data is being sent back to the originating PC.

13. Disconnect the call. To set the modem into command mode while in data mode, send the escape sequence characters [pause] +++ [p ause] then wait for “OK”. Then type ATH(enter) to hang up an existing call. Unit will respond with “OK”.

End Dial-Up Quick Start and Testing

Leased Line Quick Start and Testing

The following setup procedure is for a DLM4500 in Leased Line mode. It assumes that two phone jacks of leased line or phone cord wire is available for testing.

1. Unpack the modem(s).

3. St art a terminal program from the PC. (Note: See Dial-Up Quick St art and Testing of setup help)

4. Apply DC power to the DLM4500. Check the Power LED. It must be ON. If not check:

a. DC power is off or disconnected. Check for the presence of a nominal 12 volts DC on the power connector .

b. DC power is wired backwards. Check the source voltage with a voltmeter .

6. Connect the computer to the DLM4500 with a straight through 9 pin cable. DO NOT CONNECT THE PHONE LINE YET. Check that only the RED Power LED is On.

7. Press reset button, wait one second ( in leased line mode the modems will only accept AT commands for the first 10 seconds, and after 30 seconds should have started their connection process) then type the command string ‘AT’, then the Enter Key . The modem must reply with the characters ‘OK’. If this does not happen, recheck step 6 above and try again.

DATA-LINC GROUP

PN 161-10008-001A

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Data-Linc Group DLM4500 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual