Hardware reference guide

Modbus Plus NOMs
35013379 11/2011 265
Rear Panel Switches
Two rotary switches are located on the rear panel of the modules. They are used
together to set the Modbus Plus node and Modbus port address for the unit.
NOTE: The highest address that may be set with these switches is 64.
Rotary SW1 (top switch) sets the upper digit (tens), and rotary SW2 (bottom switch)
sets the lower digit (ones) of the Modbus Plus node address. The illustration below
shows the setting for an example address of 11.
63AH peer unable to come out of transitions at power-up
681h bad master state
682h bad slave state
683h unknown routing failure to send
684h bad port number in set () proc
685h bad port number in reset () proc
686h bad port number in getport () proc
687h bad port number in bitpos () proc
688h bad port number in enable_transmit_interrupt () proc
689h bad port number in enable_receive_interrupt () proc
68ah bad port number in disable_transmit_interrupt () proc
68bh bad port number in
691h privilege flag is not reset in the session timeout proc
692h bad port number in chkmst_hdw () proc
6AIh unknown controller type in reset busy flag
6A2h unknown function code in generate_poll_cmd () proc
6A3h unknown function code in generate_logout_msg () proc
6A4h slave link timeout on port other than port #9
6A5h illegal bypass command received by bypass code
5 513h ram address test error
6 412h ram data test error
7 311h prom checksum error
LED Error Codes
Number of Blinks Code Error