B&B Electronics 232SDD16 manual Define I/O Lines Command, Set Power-up States Command

Command: !0SO

Argument: {I/O msb}{I/O lsb}

Response: none

ASCII Example: !0SOUA

Dec. Example: !0SO<85><65>

Hex. Example: !0SO <55><41>

Bin. Example: !0SO<01010101><01000001>

Description: the first byte sets output lines #14, 12, 10, & 8 HIGH and output lines #15, 13, 11, & 9 LOW; the second byte sets output lines #6, & 0 HIGH and output lines # 7, 5, 4, 3, 2, & 1 LOW. Note: If any of these lines are defined as inputs the bit settings are ignored.

Define I/O Lines Command

The Define I/O Lines command is used to define each of the 16 I/O lines as either an input or an output. This command requires two data bytes. Each data byte defines eight I/O lines. The first data byte defines the eight most significant I/O lines (15 - 8). The second data byte defines the eight least significant digital I/O lines (7 - 0). If a bit position is set to a "0" then the I/O line will defined as an input. If a bit position set to a "1" then the I/O line will be defined as an output.

Command: !0SD

Argument: {I/O msb}{I/O lsb}

Response: none

ASCII Example: !0SDUA

Dec. Example: !0SD<85><65>

Hex. Example: !0SD<55><41>

Bin. Example: !0SD<01010101><01000001>

Description: the first byte define I/O lines #14, 12, 10, & 8 as outputs and I/O lines #15, 13, 11, & 9 as inputs; the second byte define I/O lines #6, & 0 as outputs and I/O lines #7, 5, 4, 3, 2, & 1 as inputs.

232SDD16-1005 Manual 13

Set Power-up States Command

The Set Power-up States command is used to set the states of output lines when the module's power is recycled. This command requires two data bytes. These data bytes specify the output state of each output line. The first data byte represents the eight most significant I/O lines (15 - 8). The second data byte represents the eight least significant I/O lines (7 - 0). If a bit position is set to a "0" then the state of that output line will be set LOW. If a bit position is set to a "1" then the state of that output line will be set HIGH.

Command: !0SS

Argument: {I/O msb}{I/O lsb}

Response: none

ASCII Example: !0SSÛ@

Dec. Example: !0SS<219><64>

Hex. Example: !0SS<DB><40>

Bin. Example: !0SS<11011011><10000000>

Description: the first byte sets output lines #15, 14, 12, 11, 9, & 8 HIGH and output lines #13, & 10 LOW at power-up; the second byte sets output line #7 HIGH and output lines #6, 5, 4, 3, 2, 1, & 0 LOW at power-up. Note: If any of these lines are defined as inputs the bit settings are ignored.

Read Configuration Command

The Read Configuration command returns the module's I/O definitions and the outputs power-up state. Four data bytes are returned. The first two data bytes contain the definition of the eight most significant I/O lines (15 - 8) and the eight least significant I/O lines (7 - 0) respectively. If a bit position is set to a "0" the I/O line is defined as an input, if set to a "1" the I/O line is defined as an output. The second two data bytes contain the power-up states of the most significant output lines (15 - 8) and the least significant output lines (7 - 0) respectively. If a bit position is set to a "0" the power-up state of the output will be LOW, if set to a "1" the output will be HIGH.

14 232SDD16-1005 Manual

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