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Dial-Up / Leased-Line Modem

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CD

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DLM

AGM Electronics, Inc – Dial-Up / Leased-Line Modem, Series ( ) 5019-1

Manual Rev A

User Manual

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Содержание DLM

Страница 1: ...Dial Up Leased Line Modem CD CTS RTS DTR DSR RI PHONE LINE RX TX DLM AGM Electronics Inc Dial Up Leased Line Modem Series 5019 1 Manual Rev A User Manual...

Страница 2: ...Dial Up Leased Line Modem...

Страница 3: ...ION 11 CONFIGURATION 13 ENTERING COMMAND MODE 13 COMMON COMMANDS 14 Answer A 14 Dial D 14 Echo Character E 14 Hang Up H0 14 Monitor Speaker M 14 Result Codes Enable Q 14 Result Codes Format V 14 Carri...

Страница 4: ...NDICATOR LIGHTS 20 TROUBLESHOOTING HINTS 20 Loss of Connection Failure to Connect 20 Failure to Disconnect on Dial Up Connections 23 Failure to Disconnect on Loss of Carrier 24 DLM Tries to Connect Im...

Страница 5: ...iety of cost effective data communication possibilities This manual covers installation and setup of the more commonly used configurations Pin Description 1 Power 2 Power Monitoring Speaker Phone Line...

Страница 6: ...p the DLM also incorporates a Leased Line feature which allows the DLM to be used over a Leased Line from the phone company or via a dry metallic pair of wires The DLM may be used with any protocol th...

Страница 7: ...d the two DLM s will negotiate a connection as in a Dial Up connection NOTE In Leased Line mode the AGM Electronics DLM is only compatible with another AGM Electronics DLM Connection to other Leased L...

Страница 8: ...212A and 103 113 V 21 and V 23 Data Compression ITU T V 44 V 42 bis MNP 5 Error Correction V 42 Status Indicators 8 Operating Temperature Range 20 80 deg C Adjustments Operator configurable locally fr...

Страница 9: ...se types of systems and plugging the DLM into one of these systems may result in damage to the DLM and phone system Leased Line Connection The DLM uses the same RJ 11 jack for connecting Leased Lines...

Страница 10: ...ure any connected hardware does not require the use of these lines 1 Plug one end of the RS232 cable into an available RS232 communications port your PC This port is normally a 9 pin male D connector...

Страница 11: ...f the RS232 cable into the 9 pin female D connector on top of the DLM 3 Power up both the Data Handler and DLM If properly connected the DTR DSR CTS and RTS lights should be on If RTS light is off the...

Страница 12: ...erface installed Consult with your PLC manufacture on the RS232 interface to use You will need a cable to connect from your PLC to a Modem If a cable of this type is not available you will need a Null...

Страница 13: ...each command wait for the OK response 1 Turn on the DLM and as soon as the DSR and CTS lights turn on enter AT DC0 NOTE 1 You may not get a response from this command Some configurations disable the...

Страница 14: ...its AT EB1 P0 e 7 data bits no parity 1 stop bit AT EB0 f 7 data bits even or odd parity 1 stop bit AT EB0 g 7 data bits no parity 2 stop bits AT EB0 h 7 data bits even or odd parity 2 stop bits AT EB...

Страница 15: ...up to ignore any commands To break out of this mode the DC0 command must be sent within the first 10 seconds after power up 2 Reset the DLM to its factory defaults by entering AT F0 NOTE 1 You will g...

Страница 16: ...1 EG If transfer rate is 5 minutes then enter AT T6 8 Disable echoing of characters and the displaying of result codes ATE0Q1 NOTE You will not get an OK response from this or the following command D...

Страница 17: ...and to enter the command mode must be prefixed by AT The following sections describe the commands you are most likely need to modify A complete list is available from AGM Electronics Inc Entering Comm...

Страница 18: ...will automatically answer Dial D Enter ATD followed by the phone number to dial the phone number when in Dial Up operation Echo Character E Command Command characters Echoed ATE1 Command characters No...

Страница 19: ...Software XON XOFF Flow Control AT K4 Leased Line L Command Dial Up Operation AT L0 Leased Line Originate AT L1 Leased Line Answer AT L2 NOTE For Leased Line operation one DLM must be set for Originat...

Страница 20: ...ta formats using 11 bits The following table indicates the command required to set the DLM to supported data format Data Format Command 8 data no parity 1 stop AT EB0 8 data even parity 1 stop AT EB1...

Страница 21: ...S V92 1 0 31200 0 56000 V 34 AT MS V34 1 0 33600 0 33600 V 32bis AT MS V32B 1 0 19200 0 19200 V 32 AT MS V32 1 0 14400 0 14400 V 22bis AT MS V22B 1 0 2400 0 2400 19200 V 32bis AT MS V32B 0 0 19200 0 1...

Страница 22: ...and dialing number Range 2 65 Seconds ATS6 2 S7 Time in seconds the DLM waits for carrier before aborting a connection Range 35 65 Seconds ATS7 50 S10 Sets the time in milliseconds the carrier must be...

Страница 23: ...Diagnostics and Trouble Shooting Dialup Leased Line Modem 19 Technical Support AGM Electronics Inc PO Box 32227 Tucson AZ 85715 USA Phone 520 722 1000 Fax 520 722 1045 www agmelectronics com...

Страница 24: ...off for a Leased Line connection TX Flashes when characters are transmitted to the Modem Phone line RX Flashes when characters are received from the Modem Phone line Troubleshooting Hints Loss of Conn...

Страница 25: ...en disabled the only way to force a hang up is with the escape sequence of followed by the ATH0 command When used for Leased Lines the configuration options contained in the Getting Started section di...

Страница 26: ...C1 NOTE With the AT command set disabled you will need to cycle the power and enter the command AT DC0 within the first 10 seconds before the DLM will accept any commands 3 Poor or changing line condi...

Страница 27: ...he phone line The first is by toggling the RS232 DTR line and the second is through the use of the software hang up command sequence The software hang up command is ATH0 1 DTR line always active The D...

Страница 28: ...DLM detects the loss of carrier We have found that in some Leased Line applications the DLM may fail to disconnect When this occurs the CD light will remain on You may also get a stream of characters...

Страница 29: ...Appendix A Dialup Leased Line Modem 25 Appendix A Wiring and Simplified Diagram...

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