Data-Linc Group DLM4100 Manual de usuario

USER GUIDE

NDUSTRIAL

ATA

OMMUNICATIONS

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

Compact Dial-Up Modem

DLM4100

DATA-LINC GROUP

PN 161-09977-001B

Product User Guide

DLM4100 User’s Manual

P/N 161-09977-001B 2

Operating Instructions

The DLM4100 is a compact dial-up modem designed and manufactured to operate in full industrial applications.

It is powered with an input voltage range of +8V to +15VDC. A 120VAC to unregulated 12VDC wall transformer

power supply has been provided (24VDC versions also available). The operating temperature range of this

device is 0°to 70°C. The (ET) Extended Temperature model is rated at -40°to +85°C.

Any device connected to the modem must be set for a 10-bit word such as:

Data Bits Stop Bits Start Bits Parity

8 1 1 None

7 1 1 Even/Odd

7 2 1 None

Connections

Cable connections are all made on one end of the unit. The DB-9 female (see pinout below) on the left is for the

RS-232 data.

Note: RS-485 and RS-422 models are also available

The supplied wall transformer plugs into the barrel jack for supplying power to the unit. For alternate power

methods, see barrel jack pinout below. The RJ-11 jack on the right is the telephone line connection. Only the

center two lines are used.

DB-9 for the RS-232 data port. The port is setup as a DCE device and the pins are:

DB-9 Female Description

Pin 1 Carrier Detect

Pin 2 Data Out of modem RS-232 port

Pin 3 Data Into modem RS-232 port

Pin 4 N/C

Pin 5 Ground

Pin 6 N/C

Pin 7 N/C

Pin 8 N/C

Pin 9 N/C

The 12 VDC power jack plug for input power.

12VDC (P-5 Barrel Jack) Center Pin +8 to 15VDC in

Outer Ring Ground

DLM4100 User’s Manual

P/N 161-09977-001B 3

Indicators

There are four LED’s displayed out the front panel for status and diagnostics they are as follows:

(P) Power Red On indicates that the board is receiving power

( I ) Data In Yellow On indicates that data is flowing into the serial port

(O) Data Out Green On indicates that data is flowing out to the serial port

Since the DLM4100 has been pre-configured at the factory for typical PLC to PC use, the only command strings

required are for dialing and hanging up. The command instruction to be entered in either PC or PLC

programmed for dial-up operation are listed below:

Dial String: ATDTx

Command Mode (escape sequence): +++

Hang up: ATH0

Note: Do not use any initialization string at all when commanding the modem to dial. Any command

other than the ATDT followed by the number being dialed can change the pre-configuration of the

DLM4100 and make it inoperative for PLC communications.

Specifications

Input Voltage +8 to 15 VDC

Current Consumption Max 260mA

Ring Voltage Detected 38 to 150 RMS

Ring Frequency Detected 15.3 to 68 Hz

Telephone Loop Current 20 to 100mA

Data Transmit Level -12 to –9.0 dBm

DTMF Transmit Level -2.5 dBm Avg. over 3 second interval

Operating Temperature Range 0°C to 70°C Standard Model

-40°C to 85°C Extended Temperature Model

Enclosure Material 18 gauge steel

Enclosure Dimension 9.0” x 5.0” x 1.5” over mounting flanges

Weight 1.68 lb.

.76 kg.

Note: The following pages are the AT Commands, Modem Registers, and Result codes for your

reference. In pre-configured systems from Data-Linc Group these values should not be changed.

DLM4100 User’s Manual

P/N 161-09977-001B 4

AT Commands

A- Answer Command – ATA forces the modem to immediately go off-hook and begin transmitting the

answer tone sequence.

Bn- Select Communications Standard – ATBn selects the modulation scheme used for connections

below 2400 bits per second.

n=0 Selects CCITT standards

n=1 Selects Bell standards

D- Dial Command – Below are the characters accepted in a dialing command.

0-9, #,* = Dialing Digits

L = Re-dial last number

P = Pulse dial

T = Tone dial

S=n = Dial stored number

W = Wait for dial tone

^ = Toggles state of calling tone

, = Pause for the duration of S8

@ = Wait for silence

! = Switch hook flash

; = Return to the command state

En- Command Echo – ATEn determines whether commands will be echoed back to the host.

n=0 Do not echo commands

n=1 Enable command echo

Hn – Switch Hook Control – ATHn opens and closes the modem’s hook switch.

n=0 Switch hook relay opens

n=1 Switch hook relay closes

Ln- Speaker Volume – ATLn Sets the amplitude of the modem’s audio output

n=0 Lowest speaker volume

n=1 Low speaker volume

n=2 Speaker remains on

n=3 Speaker off during dialing, on until carrier

Mn- Speaker Activity – ATMn determines when the modem’s audio output is active.

n=0 Speaker off

n=1 Speaker on until carrier received

n=2 Speaker remains on

n=3 Speaker off during dialing, on until carrier

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On- On Line – ATOn switches the modem from the command mode to the data mode.

n=0 Return on-line with no retrain

n=1 Initiate retrain returning on-line

Qn- Reponses – ATQn determines if the modem will issue responses

n=0 Send responses*

n=1 No responses

SR?- Interrogate Register – ATSr? request the current value in register Sr.

SR=n- Set Register Value – ATsr=n sets the value of register Sr to n

Vn- Result Codes – ATVn sets the modem to issue numeric or full word result codes

n=0 Numeric result codes

n=1 English word result codes

Wn- Connect Message Rate – ATWn determines whether the data rate reported in the Connect

response is the host date rate, the link data rate or whether both are provided along with the error control

and data compression protocols negotiated.

n=0 Send “Connect” at DTE rate

n=1 Report line speed, DTE speed and Link protocol

n=2 “Connect” reports Link speed

Xn- Result Code Set – ATXn selects which set of result codes the modem may send.

n=0 Result codes 0 to 4

n=1 Result codes 0 to 5 and 10

n=2 Result codes 0 to 6 and 10

n=3 Result codes 0 to 5, 7 and 10

n=4 Full result codes*

Zn- Reset – ATZn executes a soft reset to the modem and resets the modem configuration

n=0 Reset to user profile 0

n=1 Reset to user profile 1

&Cn- DCD Operation – AT&Cn determines the operation of the DCD output.

n=0 DCD is forced active

n=1 DCD indicates a valid carrier

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P/N 161-09977-001B 6

&Dn- DTR – AT&Dn determines how the modem will respond to changes to DTR

n=0 DTR is ignored by the modem

n=1 Enter command mode if DTR revoked

n=2 Disconnect if DTR revoked

n=3 Soft reset when DTR revoked

&Gn- Guard Tone – AT&Gn controls the guard tone produced by the modem

n=0 Guard tone disabled

n=1 Guard tone disabled

n=2 1800 Hz guard tone

&Kn- Flow Control – AT&Kn selects the flow control method used by the modem

n=0 Disabled

n=3 RTS/CTS

n=4 XON/XOFF

n=5 Transparent XON/XOFF

n=6 RTS/CTS and XON/XOFF

&Pn- Dial Pulse Make/break Ratio – AT&Pn determines the specific pulse dialing parameters used by the

modem

n=0 39/61% @ 10pps

n=1 33/67% @ 10pps

n=2 39/61% @ 20pps

n=3 33/67% @ 20pps

&Qn- Line Connection – AT&Qn determines if error control or data buffering are active on the link

n=0 Direct mode (no data buffering)

n=5 Use Error Correction

n=6 Normal Mode (speed buffering)

&Sn- DSR Operation – AT&Sn sets the operation of the DSR signal

n=0 DSR always active

n=1 DSR in accordance with V.25

&Tn- Test Modes – AT&Tn selects modem test modes

n=0 Exit test mode

n=1 Local analog loopback

n=3 Initiate local digital loopback

n=4 Respond to remote loop request

n=5 Deny remote loop request

n=6 Initiate a remote digital loopback

n=7 Remote digital loopback with self-test

n=8 Local analog loopback with self-test

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&Vn- View Configuration Profiles – AT&Vn permits the user to check on the modem’s current

configuration

n=0 View active profile & user profile 0

n=1 View active profile & user profile 1

&Wn- Store Active Profile – AT&Wn stores the current modem configuration in NVRAM.

n=0 Store active profile as profile 0

n=1 Store active profile as profile 1

&Yn- Recall Stored Profile – AT&Yn sets the stored modem configuration to be used after a hard reset

n=0 Recall profile 0 on power-up

n=1 Recall profile 1 on power-up

&Zn=x- Store telephone number “x” in memory location “n”

%En- Line Quality Monitor/Auto Retrain – AT%En determines if the modem will monitor line quality

during a connection and initiate a retrain if quality drops below acceptable levels.

n=0 Disabled

n=1 Enabled

n=2 Line quality, fall back, fall forward

%L- Read Received Signal Level – AT%L permits the user to read the magnitude of the receive signal in

dBm

%Q- Read Line Signal Quality – AT%Q permits the user to read the EQM value of the received signal

\Bn- Transmit Break – AT\Bn selects the duration of the break signal sent

Break=n x 100 msec.

\Gn- Modem Port Flow Control –

n=0 No modem port flow control

n=1 XON/XOFF port flow control

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\Kn- Break Control – AT\Kn determines how the modem will handle a break signal.

Break received from host with reliable link

n=0 Enter on-line command mode; do not transmit break

n=1 Purge buffers, immediately transmit break

n=2 Same as n=0

n=3 Immediately send break

n=4 Same as n=0

n=5 Send break in sequence with data

Break received from host with direct link

n=0 Immediately transmit break, then enter on-line command mode

n=1 Immediately send break

n=2 Enter command mode, but do not transmit break

n=3 Same as n=1

n=4 Same as n=0

n=5 Same as n=1

Break received from modem with normal link

n=0 Purge buffers, immediately send break to the host

n=1 Same as n=0

n=2 Immediately send break to the host

n=3 Same as n=2

n=4 Send break in sequence with data

n=5 Same as n=2

Host initiates break on reliable link

n=0 Purge buffers and immediately transmit break

n=1 Same as n=0

n=2 Immediately transmit break

n=3 Same as n=1

n=4 Transmit break in sequence with data

n=5 Same as n=4

\Nn- Error Control Selection -AT\Nn determines how the modem will handle error control negotiations

n=0 Normal mode, no error correction

n=1 Direct mode, no buffering, no error correction

n=2 Reliable mode, error correction required

n=3 V.42 Auto-reliable mode, accept either an error controlled or non-error controlled link

n=4 V.42 Reliable mode, LAPM required

n=5 MNP required

-Kn- MNP Extended Services – AT-Kn determines how the modem handles MNP10

n=0 No LAPM to MNP10 conversion

n=1 LAPM to MNP10 conversion

n=2 LAPM to MNP10 conversion but no MNP extended service during V.42 LAPM answer mode

detect

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+MS- Select Modulation – AT+MS sets the modulation and available data rates in the format shown below

AT+MS= a, b, c, d, e, f <CR>

a=Modulation type

B103- Bell 103 (300 BPS)

B212- Bell 212 (1200 BPS)

V21- V.21(300 BPS)

V22- V.22 (1200 BPS)

V22B- V.22bis (1200 or 2400 BPS)

V23- V.23 (1200 Tx/ 75 RX or 75 Tx/ 1200 Rx)

V32- V.32 (4800 or 9600 BPS)

V32B- V.32bis (4800 to 14400 BPS)

V34- V.34bis (16800 to 33600 BPS)

b= Auto detection

0- Automatic Negotiation Disabled

1- Automatic Negotiation Enabled

c= Minimum receive Data Rate (300 to 33600 BPS)

d= Maximum receive Data Rate (300 to 33600 BPS)

e= Minimum transmit Data Rate (300 to 33600 BPS)

f= Maximum transmit Data Rate (300 to 33600 BPS)

Modem Registers

S0 Answer on nth Ring: S0 sets the modem to automatically answer on the nth ring. Setting S0 to 0

disables automatic answer.

Range: 0 to 255

Units: Rings

Default: 0

S1 Ring Count: S1 is a read-only register showing the number of rings detected. If a ring is not detected

within 8 seconds, S1 reset to zero.

Range: 0 to 255

Units: Rings

Default: 0

S2 Escape Character: S2 determines the ASCII escape character. Values of 0-127 select valid ASCII

escape characters; values from 128-255 disable the escape sequence.

Range: 0 to 255

Units: ASCII Character

Default: 43

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