User's Manual

485SDA103798 Manual 17
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Set Power-up States Command
The Set Power-up States command is used to set the states of
the digital outputs at power-up. This command requires a data byte.
The data byte is used to specify the power-up output states. Bits 0-2
correspond to the power-up states of digital outputs 0-2. If a bit is a
0 then the output will be set LOW at power-up. If a bit is a 1 then
the output will be set HIGH at power-up. Refer to Table 3.6.
NOTE: This command ignores bits 3-7 of the data byte.
Command Syntax
!{addr}SS{states}
Response Syntax
no response
Where {states} is a byte in which Bits 0-2 correspond to the
power-up states of Digital Outputs 0-2
Set Turn-around Delay Command
The Set Turn-around Delay command sets the amount of time
the 485SDA10 waits to respond after executing a command. This
delay is necessary when two RS-485 transmitters are sharing a pair
of wires to ensure that two transmitters are not enabled at the same
time. Refer to B&B Electronics’ free RS-422/RS-485 Application
Note for more information on RS-422/485. The turn-around delay is
stored in non-volatile memory. This command requires a data byte.
The data byte is used to specify the turn-around delay. One unit of
turn-around delay is equal to the transmission time of one character.
The transmission time can be computed as follows:
time = (1 / baud rate) * 10
Command Syntax
!{addr}SC{delay}
Response Syntax
no response
Where {delay} is a byte used to specify the turn-around delay.
Read Module Configuration Command
The Read Module Configuration command reads the
485SDA10’s address, power-up states, and turn-around delay (in
that order).
Command Syntax
!{addr}RC
Response Syntax