Mounting and Wiring
Remote Access
46 UMC800 Controller Installation and User Guide Release F
4/01
Modem configuration examples
Below are procedures for setting up the following commercially available modems:
3Com US Robotics 56K Data/Fax External Modem
Zoom 56K Dualmode External Modem
Best Data 56SX Data Fax External Modem
SixNet VT-MODEM Industrial External Modem
3Com US Robotics 56K Data/Fax External Modem
Step Action
1Ensure that the switches are set to the factory settings:
Switch Setting Position Function
1 OFF UP Normal DTR operations
2 OFF UP Verbal (word) results
3 ON DOWN Enable result codes
4 OFF UP Displays keyboard commands
5 ON DOWN Disables auto answer
6 OFF UP Modem sends CD signal when it connects with another
modem
7 OFF UP Loads Y0-Y4 configuration from user-defined
nonvolatile memory (NVRAM)
8 ON DOWN Enables recognition (smart mode)
2Connect the modem to a PC. If your computers RS232 port has a 25-pin connector, use a
DB-25 male to DB-25 female RS232 cable. If your computers RS232 port has a 9-pin
connector, use a DB-25 male to DB-9 female modem cable.
3Power-up the modem.
4Run a serial communication port program such as Hyperterminal.
5Within the communication program, select the port to which the modem is connected.
6Configure the port to these settings:
baud rate = 9600
data bits = 8
parity = none
stop bits = 1
flow control = none
7In the programs terminal window, type in the letters AT followed by the enter key. The
modem should give an OK response.
8Power down the modem and disconnect it from the PC.