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: !{addr}SS
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><01000000>
Description: Set module 0's (decimal 48) power-up states. 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 #6 HIGH and output lines #7, 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, the outputs power-up state, the module's address, and the turn-around delay. Six 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. The fifth data byte is the module's address. The sixth data byte is the turn-around delay.
Command: | !{addr}RC | |
Argument: | none | |
Response: | definition of the sixteen I/O lines in two 8 bit bytes, and |
the power-up states in two 8 bit bytes. (shown in bold face) | |
| |
485SDD16-1005 Manual | 15 |
ASCII Example: !9RCUAP@9♦
Dec. Example: !9RC<85><65><80><64><57><04>
Hex. Example: !9RC<55><41><50><40><39><04>
Bin. Example: !0RC<01010101><01000001><01010000><01000000> <00111001><00000100>
Description: Read module 9's (decimal 57) configuration. The first byte (MSB of I/O definitions) - I/O lines #14, 12, 10, & 8 are outputs and I/O lines #15, 13, 11, & 9 are inputs; the second byte (LSB of I/O definitions) - I/O lines #6, & 0 are outputs and I/O lines #7, 5, 4, 3, 2, & 1 are inputs; the third byte (MSB of output power-up states) - output lines #14, & 12 HIGH and output lines #10, & 8 LOW at power-up; the fourth byte (LSB of output power-up states) - output line #6 HIGH and output line #0 LOW at power-up; the fifth byte (module address) is set ASCII "9" (decimal 57); the sixth byte (turn- around delay) is a decimal 4.
