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1. Remote Modem AT amp WI1 amp F1 ATQ1 BA0 MB9600 SB9600 AT amp EI amp E3Z amp ET amp E12 amp E14 AT EB1 P1 amp W0 Local Modem AT amp WI amp F1 ATQO BA0 MB9600 SB9600 AT amp E0 amp E3 amp E7 amp EI2 amp E14 ATS EB 1 P1 amp W0O THE INFORMATION PROVIDED IN AutomationDirect com TECHNOTES 1S PROVIDED aon 1S WITHOUT A GUARANTEE OF ANY KIND These documents are prowided by our technical support department to assist others We do not guarantee that the data is suitable for your particular application nor do assume any responsibility for themin your application Using Modems with Directsoft Tech notes version 1 x 2 x 16bit Windows 95 98 NT Last reviewed 19 Nov 01 modem_16bit doc Page 5 of 10 MultiTech MT1932ZDX and MT2834ZDxX see note Note For ODD parity applications the MT2834 ZDX modems will work if they have a firmware revision of 3 13A or older We have been told by some of our customers that the newer versions of the firmware 1998 vintage have the odd parity support again so you might try the configuration and see if it works MultiTech has removed the odd parity support on the newer modems in order to incorporate other features Their technical support group is willing to send you the firmware with odd parity support if you need that feature This is only a problem if you want to use the ZDX modems for programming a port that has been configured for ODD parity such as the programming ports on the 105 205 and 405 PLCs N2. N PROVIDED IN AutomationDlrect com TECHNOTES IS PROVIDED AS IS WITHOUT A GUARANTEE OF ANY KIND These documents are provided by our technical support department to assist others We do not guarantee that the data is suitable for your particular application nor do we assume any responsibility for themin your application Using Modems with Directsoft version 1 x 2 x 16bit Windows 95 98 NT Tech notes Last reviewed 19 Nov 01 modem_16bit doc Page 8 of 10 CABLE DIAGRAMS The following PLC s can be used remotely Series 405 DL 450 Port1 Cable 1 DL 450 Port2 RJ 12 port Cable 2 or Cable 3 DL 440 Port2 Cable 1 DL 430 Port2 Cable 1 TI 435 Port2 Cable 1 Series 305 DL 350 Port2 Cable 1 DL 340 Port 1 and Port 2 DCU Cable 2 DL 330 DCU Cable 2 DL 330P DCU Cable 2 TI 335 programming port DCU Cable 2 TI 330 DCM Cable 2 TI 320 DCM Cable 2 Series 05 105 205 DL 250 Port 2 Cable 2 or Cable or 4 DL 240 Port2 Cable 2 or 3 DL 05 105 230 Port 1 only with MultiTech Cable 2 or Cable 3 modems support ODD transmit bits DL 05 Port 2 Cable 2 or 3 Cable 1 Modem DB25 to Series 405 Port 1 DB25 cable DB25 Ma le DB25 Male To Modem To 405 TXD 2 2 TXD RXD 3 3 RXD GND 7 7 GND RTS 4 4 RTS CTS 5 5 CTS DSR 6 6 DSR DCD 8 8 DCD DTR 20 20 DTR THE NFORMATI ON PROVI ese documents are provided by our technical Support
3. OTE A modem set for ODD parity will only communicate with other modems set for ODD parity NO PARITY modem setup Type ATLS to display active settings of your modem Remote Modem AT amp F8 amp WO0 AT amp FO AT amp F9 amp WO AT amp DOS0 1 AT FO BA1 MB9600 SB9600 AT amp EQO amp E3 amp E7T amp EI2 amp E14 ATE0OQ1 amp WO NO response from modem Local Modem Use the same settings except use QO instead of Q1 and E1 instead of EO Note If you have Multitech firmware version 3 13a you may have to use this line to make sure modem is set for NO parity AT EBO PO0 Sets 10 bit mode NO parity In DirectSoft v2 x an higher in the modem configuration use Initialization ATX4E1V1S7 120 amp C1 BA1 MB9600 SB9600 M Dial Tone AT amp EODT ODD PARITY modem setup for use with most of the programming ports Type ATLS to display active settings of your modem Remote Modem AT amp F8 amp WO0 AT amp FO AT amp F9 amp WO AT amp DOSO 1 AT F0 BA1 MB9600 SB9600 AT amp EQ amp E3 amp E7 amp E12 amp E14 ATSEB1 P1 Sets 11 bit mode Odd parity ATE0Q1 amp W0O NO response from modem Local Modem Use the same settings except use QO instead of Q1 and E1 instead of EO In DirectSoft v2 x an higher in the modem configuration use Initialization ATX4E1V1S7 120 amp C1 BA1 MB9600 SB9600 M Dial Tone AT amp E0O EB1 P1DT THE INFORMATION PROVIDED IN AutomationDIl rect com TECHNOTES 1S PROVIDED aon 1S WITHOUT A GUARANTEE OF ANY KIND Thes
4. Using Modems with Directsoft Tech notes version 1 x 2 x 16bit Windows 95 98 NT Last reviewed 19 Nov 01 modem_16bit doc Page of 10 Introduction Recommended modems PLC Setup How to setup modem Let s get connected Help Modem Setup Strings Cable Diagrams This document pertains to people using the older versions of Directsoft versions 1 x or 2 x If you are using Directsoft32 version 3 x you will need to get the other Directsoft32 Modem Document from the Automationdirect com tech support page You can also refer to the Directsoft 32 programming manual for assistance It is not difficult to establish remote communications with a PLC via a modem This paper should help you in setting up this type of communications link With today s prices it is possible to buy a high quality modem for a reasonable price We have established communications with a personal computer using the following brands of modems Recommended modems MultiTech Most preferred ZDX and Multi Modem II works with parity as Odd or NONE The MT2834ZD X modem is our most preferred and has proven reliable It can also be configured remotely This may save you a trip to the job site for modem setup changes USRobotics Sportster NOT Sportster Si Hayes Optima Accura Sixnet VT Modem 2 allows Auto dial out using PLC output to initiate We recommend that you buy an external modem Internal modems are much harder to debug when things don t work corr
5. e documents are provien by our technical support department to assist others We do not guarantee that the data is suitable for your particular application nor do assume any responsibility for themin your application Using Modems with Directsoft Tech notes AUTOMATION DIRECT version 1 x 2 x 16bit Windows 95 98 NT Last reviewed 19 Nov 01 modem_16bit doc Page 6 of 10 Supra FaxModem 14 4k V 32 Remote Modem AT amp FO NO S37 9 CO N3 amp C1 amp KO amp Q5 amp R1 amp YO SO 1 amp WO Local Modem AT amp FO NO S37 9 CO N3 amp C1 amp KO amp Q5 amp R1 amp YO amp WO USRobotics Sportster Type ATS to display active settings of your modem Remote Modem Use default switch settings except for switch 1 amp 5 AT amp FI amp BO amp N6 amp DO amp H1 amp R1I amp IO amp KO amp M4 amp WO Local Modem Use default switch settings AT amp FI amp DO amp MO amp WO In DirectSoft v2 x an higher in the modem configuration use Initialization ATX4E1V1S7 60 amp C1 M Dial Tone AT amp N6 amp KO amp MODT NOTE By setting the amp M4 option in the remote modem it allows the modem to switch between Error Correction and Non Error Correction mode When the calling modem uses the amp MO switch both modems will use the Non Error Correction mode This is the desired connection If the telephone lines are noisy error correction may be necessary to establish any kind of connection To do this the amp M4 switch should be used on the local modem a
6. ectly This is because they do not have indicator lights that we can use to troubleshoot External modems will give you speaker control and indicator lights We also prefer that you have a modem that is fairly new and has the latest firmware available from the manufacturer You can check this on the internet most often THE INFORMATION PROVIDED IN AutomationDlrect com TECHNOTES S PROVIDED AS 1S WITHOUT A GUARANTEE OF ANY KIND These documents are provided by our technical support department to assist others We do not guarantee that the data is suitable for your particular application nor do we assume any responsibility for themin your application Using Modems with Directsoft Tech notes version 1 x 2 x 16bit Windows 95 98 NT Last reviewed 19 Nov 01 modem_16bit doc Page 2 of 10 There are a few important steps you must take in order to establish remote communications 1 PLC Setup You must configure your PLC communication port for 9600 NO PARITY The important part is the parity setting Most popular modems cannot transmit an odd number of bits per character If parity were enabled each character would consist of 1 start bit 8 data bits 1 parity bit and stop bit making a total of 11 bits per character 2 Modem Setup You must use a terminal program of some kind such as the Windows Terminal or HyperTerminal application to configure the remote modem You should set the terminal program for the same speed that you have configur
7. ed your communications port for We usually use 9600 baud so use 9600 8 None 1 and hardware handshaking Now you must configure the modem to e Auto Answer e Use baud rate adjustment or use a fixed Serial port baud rate of 9600 e Turn compression OFF e Tum error correction OFF You may have to enable error correction if your telephone line is noisy but you may have some problems executing tasks due to communication delays Write these settings to the Non Volatile RAM by using the amp W0 command This will save the settings in the modem so that when it is power cycled it will use these settings Please refer to the configuration command lines examples on page 4 3 Cable The best way to connect between the modem and the PLC is using the PLC Direct programming cable along with a NULL MODEM cable Cable 2 You will most likely have to get a 9 25 pin adapter also since our programming cables are made to fit into 9 Pin serial ports You may be able to find a 9 to 25 pin adapter that is also a NULL modem cable Appendix A shows the pin out description for these cables If you are close to a Radio Shack store you could purchase items 26 264 DB9 Null Modem Adapter and 26 1388 DB25 male DB9 male 4 Let s Get Connected If you have DirectSoft v2 0 or higher you are now ready to setup your link to use with a modem Refer to the Directsoft user Manual If you are using a previous version of DirectSoft 1 x then you mu
8. m COMPLETELY Let me repeat that You will have to exit the terminal program completely Otherwise DirectSoft will not be able to get control of the communications port and you will not be able to get online V Start DirectSoft like you would normally Create a new link using the communications port that your modem is connected to You should now be able to communicate with your PLC just like it was connected to your computer When you are done with the connection you will have to exit DirectSoft restart the terminal program and disconnect the modem using the wait for OK response and ATH lt CR gt command sequence 5 HELP If you cannot connect then you can refer to our web site where we will be posting FAQ s Also check the following before calling Tech Support Frequent Reasons for not connecting Modem settings are not correct or have not been written to NVRAM Directsoft Link settings are not correct Cable is not correct PLC port has not been configured correctly The Phone line may be noisy Raise the Link Timeout to 2000ms and the Retry to 5 We find that this is very helpful in most cases 6 Make sure your fax machine sharing the same line is not answering the call E A TE THE INFORMATION PROVIDED IN AutomationDirect com TECHNOTES S PROVIDED aon 1S WITHOUT A GUARANTEE OF ANY KIND These documents are provien by our technical support department to assist others We do not guarantee that the data is suitable for you
9. nd since the remote modem is set to automatically switch between the two modes nothing will have to be changed there SixNet VT Moden 1 Type AT amp V to display active settings of your modem Remote Modem AT amp F amp WO Set modem to factory settings ATSO 1 Sets the modem to auto answer AT amp V Use this to verify changes AT amp DO Tells modem to ignore DTR AT CO Disables data compression AT EO Disables internal line Quality Check AT KO Disables flow control ATS37 9 Set Modem to Modem baud at 9600 ATNO Forces modem to modem baud setup in 37 AT HO0 Turns OFF Rockwell Chipset AT N1 Sets the Operating Mode of the modem to direct asynchronous communications no send receive buffers and no error checking AT amp WO0 Store settings to user profile 0 AT amp YO Optional Loads profile 0 on power up Sixnet has an application note for the VT modem used with a 250 CPU Go to their web site for info http www sixnetio com Ask for Technical Note 614 THE INFORMATI ON PROVIDED IN AutomationDIl rect com TECHNOTES 1S PROVIDED ne 1S WITHOUT A GUARANTEE OF ANY KIND These documents are provided by our technical support department to assist others We do not guarantee that the data is suitable for your particular application nor do assume any responsibility for themin your application Using Modems with Directsoft Tech notes eel version 1 x 2 x 16bit Windows 95 98 NT Last reviewed 19 Nov 01 modem_16bit doc Page 7 of 10 THE INFORMATIO
10. r particular application nor do assume any responsibility for themin your application Using Modems with Directsoft Tech notes version 1 x 2 x 16bit Windows 95 98 NT Last reviewed 19 Nov 01 modem_16bit doc Page 4 of 10 Modem Configuration Setup Strings Hayes Accura 336 56K Type AT amp V to display active configuration for your modem Remote Modem AT amp F amp WO ATSO 1 AT amp DO CO EO amp KOS37 9NO N1 AT amp WO Local Modem AT amp F NO S37 9 S46 136 amp C1 amp KO amp Q5 amp R1 amp YO amp WO Hayes Optima 9600 Type AT amp V to display active settings of your modem Remote Modem AT amp F NO S37 9 S46 136 amp C1 amp KO amp Q5 amp R1 amp YO SO 1 AT QI amp WO Local Modem AT amp F NO S37 9 S46 136 amp C1 amp KO amp Q5 amp R1 amp YO amp WO MultiTech MT932EAB This modem is no longer available from MultiTech The newer MultiModem II models should work with the same configuration Use the default DIP switch settings except set switch 1 to force DTR ON and switch 5 to Auto Answer mode Type ATLS to display active settings of your modem Remote Modem AT amp WI1 amp F1 ATQ1 BA0 MB9600 SB9600 AT amp EI amp E3 amp E7 amp E12 amp E14 amp WO Local Modem AT amp WI amp FI1 ATQO0 BA0 MB9600 SB9600 AT amp E0 SE3 amp E7 amp E12 amp E14 amp W0 If you are using a port configured for ODD parity such as the programming ports on our PLC s then the following Type ATLS to display active settings of your modem
11. st follow the steps below THE INFORMATI ON PROVIDED IN AutomationDIlrect com TECHNOTES 1S PROVIDED oo 1S WITHOUT A GUARANTEE OF ANY KIND These documents are provuded by our technical support department to assist others We do not guarantee that the data is suitable for your particular application nor do assume any responsibility for themin your application Using Modems with Directsoft Tech notes version 1 x 2 x 16bit Windows 95 98 NT Last reviewed 19 Nov 01 modem_16bit doc Page 3 of 10 Using Windows Terminal or HyperTerminal I You are now ready to connect your local computer modem To dial the remote modem you need to use the terminal program You should dial the modem by sending the following command H AT amp D0 DT telephone number Example AT amp DO DT 1 2434456666 II The amp D0 command tells the modem to not hang up the line when the DTR signal is dropped Since we will have to exit the terminal program the communications port is reset and the DTR signal is dropped If the modem disconnected at this point we wouldn t be able to connect to the PLC with DirectSoft With some modems US Robotics included terminal must be configured to not insert a carriage return CR automatically after each command The carriage return cancels out the Dial request Look under Terminal Preferences IV OK assuming you have used the command above to connect to the remote site you will have to exit the terminal progra
12. urchase the 1S5pin SVGA Male connector The part number is 276 1501 DB 25 Pin Modem DB 9 Pin Modem PLC Port 2 MODEM PLC Port 2 MODEM 15pin SVGA DB25 15pin SVGA DB9 Male Male Male TXD A Ses 3 TXD TXD 2 PRR 2 TXD RXD 3 2S SSS5 2 RXD RXD oF SSS S5 3 RXD GND T IRnREnS 5 GND GND 7 7 GND RTS 5 7 RTS RTS 5 4 RTS CTS 4 8 CTS CTS 4 Be CTS 6 DSR Used with the VT modem eS 8 DCD A EFN MTD THE INFORMATI ON PROVIDED IN AutomationDlrect com TECHNOTES S PROVIDED aon 1S WITHOUT A GUARANTEE OF ANY KIND These documents are provien by our technical support department to assist others We do not guarantee that the data is suitable for your particular application nor do assume any responsibility for themin your application
13. uspuicment cu uaarat vtnsia we uv nut yuuranece tnut tne vate ra surcawic ivi yvwi porereurar application nor do we assume any responsibility for them in your application Using Modems with Directsoft Het version 1 x 2 x 16bit Windows 95 98 NT modem_16bit doc Page 9 of 10 Tech notes Last reviewed 19 Nov 01 Cable 2 DB9 to DB25 Null Modem Adapter for connection to programming cables This cable is used in conjunction with a programming cable to connect to the modem DB25 Male To Modem DB9 Male To Cable RXD 2 TXD 3 GND 5 RIS CTS 8 DCD 1 DIR 4 on DSR 6 Cable 3 DL 240 to DB25 Modem Connector RJ 12 DB25 Male TXD 4 2 TXD RXD 3 3 RXD GND 1 7 GND 4 RTS Pos 5 a CTS 6 DSR 2 8 DCD 20 DTR The assume any responsibility for themin your application 2 3 7 DCD TXD RXD GND RTS CTS DSR DTR 240 RJ 12 Port vUARANTEE OF ANY KIND These documents are provien by our technical Support department to assist others We do not guarantee that the data is suitable for your particular application nor do Male Using Modems with Directsoft Tech notes version 1 x 2 x 16bit Windows 95 98 NT Last reviewed 19 Nov 01 modem_16bit doc Page 10 of 10 Cable 4 DL 250 to DB25 Modem Connector If you are close to a Radio Shack Store you can p
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