Communications Installation - Connecting the HC900 Controller to a PC with the Designer Software
130 HC900 Process Controller Installation and User Guide Revision 19
06/14
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 (page 132)
• Best Data 56SX Data Fax External Modem (page 133)
• SixNet VT-MODEM Industrial External Modem (page 134)
3Com US Robotics 56K Data/Fax External Modem
Step Action
1 Ensure 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)
2 Connect the modem to a PC. If your computer’s RS-232 port has a 25-pin connector, use a
DB-25 male to DB-25 female RS-232 cable. If your computer’s RS-232 port has a 9-pin
connector, use a DB-25 male to DB-9 female modem cable.
3 Power-up the modem.
4 Run a serial communication port program such as Hyperterminal.
5 Within the communication program, select the port to which the modem is connected.
6 Configure the port to these settings:
baud rate = 1200, 2400, 4800, 9600, 19200, 38400, 57600 (Must match Baud Rate
configured in HC900 Controller)
data bits = 8
parity = none
stop bits = 1
flow control = none
7 In the program's terminal window, restore factory defaults by keying-in the following command
string:
AT &F0
Then, press the ENTER key.
The modem should respond with OK.
To Next Page
Loading...
