B&B Electronics RS-485 Digital I/O Module 485SDD16 User Manual
Page 28
485SDD16-1005 Manual
Appendix D
D-3
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PH (815) 433-5100 -- FAX (815) 433-5104
Table D-1 Extended Commands
Function Command Response
Read I/O Lines
#{addr}RD
{I/O msb}{~I/O msb}{I/O
lsb}{~I/O lsb}
Set Output Lines
#{addr}SO{I/O
msb}{~I/O msb}{I/O
lsb}{~I/O lsb}
no response
Set Module
Address
#{addr}SA{new
addr}{~new addr}
no response
Set Turn-around
Delay
#{addr}SC{x}{~x} no
response
Define I/O Lines
#{addr}SD{I/O
msb}{~I/O msb}{I/O
msb}{~I/O msb}
no response
Set Power-up
States
#{addr}SS{I/O
msb}{~I/O msb}{I/O
lsb}{~I/O lsb}
no response
Read
Configuration
#{addr}RC
{I/O msb}{~I/O msb}{I/O
lsb}{~I/O lsb}{I/O powerup
msb states}{~I/O powerup
msb states}{I/O powerup
lsb states}{~I/O powerup
lsb states}{addr}{~addr}{turn-
around delay}{~turn-around
delay}
Where “x” is the required data byte and “~” signifies the complement
of the specified byte.
D-4
Appendix D
485SDD16-1005 Manual
B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104