These US ROBOTICS Modems can be purchased in most countries that are certified to operate correctly in that country.  The cables must have been purchased from VENDAPIN L.L.C.  The standard VendaCom software is used to setup the modems before use.  See Appendix A for the cable pin outs.  Note that a different cable is used for each modem.  One modem will be called the Host modem which is usually connected to a central host PC.  The other modem will be called the Dispenser modem.  The serial RS-232 transfers are running at a fixed rate of 9,600 baud.  Note that strings are enclosed in single quotes.
 

•  It is best to do a boot of Windows before running VendaCom to free up enough memory for VendaCom to run and to make sure the communications RS232 port is properly closed and not still open with some application (such as a PDA or mouse).

• A different setup is required for each modem depending if it is used for the Host or Dispenser side.   This means different DIP switch settings on the bottom of the modem as well as a setup for the particular NVRAM for that modem.

DIRECT CONNECT TEST

• The CECB4 must be adequately tested under the Direct Connect mode with VendaCom before attempting connecting with a modem.  A different cable is used for Direct Connect than for the Modem Connect.  The DB9 connector hoods are marked either ‘MODEM’ for modem or ‘VC’ for direct connect.
   

• In VendaCom under the Communications window, set the correct license number (usually 123456) in your VENDAPIN CECB4 processor.  Set the Password (usually 0) and the NEW and OLD Access codes (usually AAAAAAAA).  At the same time set the Modem Init. String to null [       ].
   

• Using the SETUP pull down window, make sure the Direct Connect Comm Port has the correct port assigned.  Note that the direct connect and modem port can be the same since they are not used at the same time.
   

• Now the CECB4 can be tested with VendaCom using a direct connect cable.  Transfer data in both directions using the Direct Connect and the CECB4 Board (transfers to the CECB4) and the Monitor Icons.  Only after the Direct Connect testing is complete can the modem setup and test be performed.

HOST MODEM SETUP

• Power the modem OFF and then set only the DIP switches on the bottom 3, 5 & 8 down.  Power the modem back ON.

• Using the SETUP pull down window, click on Communications.  Set the Direct Connect Comm Port to ‘COM1’ for example.  Set the Host Modem Port to ‘COM1’ for example.  Set the Dial Prefix: (area code dialing out to) to ‘727’ for example  (could be more complicated like ‘9,1727’ where the comma is a pause).  Set the Host Modem Init String: to ‘ATZ1’.

• Use the molded DB-25 to DB-9 cable designated for the Host modem connection.  Using the SETUP pull down window, click on Vend Device Modem….  Click OPEN PORT.  Then enter the Modem Command: string ‘AT’.  Now click SEND INIT STRING.  The window above should echo ‘AT’ followed by ‘OK’ on the next line.  This tests the connection to the modem.

• Now enter a new Modem command: string ‘AT&F&C1&D2E1V1M1&N6&W0’.  Then click SEND INIT STRING.  The window above should echo the command just entered followed by ‘OK’ on the next line.  If ‘OK’ does not appear (either nothing or ERROR). Then correct the modem string and re-send.

• Click CLOSE PORT to close the serial port and then click DONE to exit the window.
  
   

• The Host modem must be powered OFF then ON to complete the setup.  Only the red CS LED should be ON (top of the modem).  Remove the DB9 cable connector from the Host modem and attach it to the Dispenser modem for that next setup.

DISPENSER MODEM SETUP (REPEAT IF MORE THAN ONE)
 

• Power the modem OFF and then set only the DIP switches on the bottom 1, 3 & 8 down.  Power the modem back ON.
   

• Use the molded DB-25 to DB-9 cable designated for the Host modem connection for the Dispenser setup.  Using the SETUP pull down window, click on Vend Device Modem….  Click OPEN PORT.  Then enter the Modem Command: string ‘AT’.  Now click SEND INIT STRING.  The window above should echo ‘AT’ followed by ‘OK’ on the next line.  This tests the connection to the modem.
   

• Now enter a new Modem command: string ‘AT&F&C1&D2S10=14M1&N6&W1’.  Then click SEND INIT STRING.  The window above should echo the command just entered followed by ‘OK’ on the next line.  If ‘OK’ does not appear (either nothing or ERROR). Then correct the modem string and re-send.
   

• Click CLOSE PORT to close the serial port and then click DONE to exit the window.
   

• The Host modem must be powered OFF then ON to complete the setup.  The following red LEDs should be ON now: CS, TR, & AA.  Remove the DB12 cable connector from the Host modem and attach it to the next Dispenser modem for that next setup.

TESTING WITH VENDACOM AND MODEMS

• VendaCom is now ready for testing with the two modems.  Use the molded cable between the PC and the Host modem.  Use the special cable with the male DB-25 connector (marked MODEM) and the flat gray cable (six conductor of which we use five conductors) to the CECB4 J1 jack.  Make sure that each modem has a standard telephone cable (four conductor) from the wall telephone jack to the ‘Live wall jack’ at the back of the modem.

• In VendaCom, press the Icon Button Telephone at the top to do the modem connect and transfers.  After a slight pause, the modem can be heard dialing out.  After a connect at the remote telephone modem the modem speaker should go silent.  If all goes well, down in the bottom left a series of messages will appear, such as:

• ‘Dialing 7278456992’

• ‘Waiting for Connect’

• ‘Setting Send Mode’    OR ‘Setting Receive Mode’

• ‘Blocks’ (counts rapidly 1 to 22 or 1 to 15)

• Take note that a VendaCom connection can not be made with the CECB4 if any Escrow is being displayed on the CECB4 LCD.  That means that a customer transaction is in process and it can not be interrupted.  When the Escrow disappears then a connection can be made either direct connect or via a modem.  While a VendaCom communication is in process, the message ‘Please Wait…’ appears on the CECB4 LCD.

• Note that if a modem is connected to the CECB4 and the modem becomes powered off, it will cause the message ‘Please Wait…’ to appear on the CECB4 LCD and the CECB4 is hung waiting for data from the modem.  When the modem is again powered on, the message and hung condition will disappear.  The Host can not dial in, of course, if the CECB4 modem is inoperable or powered off.

APPENDIX A

CABLES FOR US ROBOTICS MODEL 5686E MODEMS.

HOST MODEM CABLE

• This cable is a common molded DB-25 Male (modem end) to DB-9 Female (PC end).  It can be purchased at most computer stores and is called a ‘PC Transfer Cable).

CECB4 MODEM CABLE

• This cable is a special made cable with a DB-25 Male (modem end) to a RJ connector for the CECB4 J1 jack.  This is a standard six conductor cable where only five conductors are being used.  The DB-25 pin outs are:

• Pin 2 – Red      (Tx)

• Pin 3 – Black    (Rx)

• Pin 7 – White   (GND)

• Pin 8 – Yellow  (DCD)            

• Pin 20 – Green  (DTR)