14–7
Communicating with a 2760-RB Module on a DH-485 Network
Publication 2755-6.8
To configure the 2760-RB module:
1. Set all 2760-RB module DIP switches to Off.
2. Connect the smart cable to the Configuration port of the 2760-RB
module and the serial port of the computer.
3. Send a “break sequence” to the 2760-RB module via the Terminal
Emulator:
D. Set the baud rate to 9600, 8 data bits, 1 stop bit, no parity,
no flow control, and either COM1 or COM2 depending on
the smart cable connection.
E. Program a function key to send the “break sequence” by
using the Ctrl-Shift-Break command. (This step is
specifically for Windows 3.1 Terminal Emulation.)
F. Send the break sequence to call up the 2760-RB module
configuration menu.
4. Select menu item 3: Device port protocol names. Set to:
PORT1=COPYRIGHT 1989 ALLEN-BRADLEY COMPANY INC.
2760-SFC2 LAN SERIES A REVISION B (YES/NO)=YES
5. Select menu item 21: Identification numbers. Select:
RS485 LAN 2755-DM6 ASCII MODE 0
H (YES/NO)=YES
6. Select option 11: Configuration parameters. Set to:
SLOT TIME (NO. CHARS) (DEC 0 ... 255) = 15
INTER-CHAR TIME (NO. CHARS) (DEC 0 ... 255) = 7
IDLE TIME (NO. CHARS) (DEC 0 ... 255) = 3
RETRIES (DEC 0 ... 255) = 3
19,200 BITS PER SECOND (YES/NO)=YES
BCD NODE NUMBERS (ENABLE/DISABLE)= ENABLE
BYTE SWAPPING (ENABLE/DISABLE)=ENABLE
RECEIVE MATRIXING (ENABLE/DISABLE)=DISABLE
MATRIX ADDRESS (HEX 0 ... FFFF) = 0
RE-ESTABLISH FREQUENCY (DEC 0 ... 255)=5
POLL FREQUENCY/DESTINATION [0] (HEX 0 ... FFFF)=5
POLL FREQUENCY/DESTINATION [1] (HEX 0 ... FFFF)=105
POLL FREQUENCY/DESTINATION [2] (HEX 0 ... FFFF)=5
POLL FREQUENCY/DESTINATION [3] (HEX 0 ... FFFF)=5
Type save or quit to exit out of the editor.
7. Verify that the 2760-RB is in chassis 0, group 0 module 0.
8. Save the above configuration.
