Siemens SINUMERIK 840D sl Function Manual page 63

System variable
$A_DPSD_IN[<n>,<b>]
$A_DPR_IN[<n>,<b>]
<n> = input range 1, 2, ... m; <b> = byte index within the input range: 0, 1, ... (length - 1)
Output data
System variable
$A_DPB_OUT[<n>,<b>]
$A_DPW_OUT[<n>,<b>]
$A_DPSB_OUT[<n>,<b>]
$A_DPSW_OUT[<n>,<b>]
$A_DPSD_OUT[<n>,<b>]
$A_DPR_OUT[<n>,<b>]
<n> = output range 1, 2, ... m; <b> = byte index within the output range: 0, 1, ... (length - 1)
Configured and parameterized I/O ranges for part programs / synchronized actions
Each system variable is a 32-bit bit array. Each bit is assigned to an I/O range.
Bit <n> ≙ machine data index <n> ≙ I/O range <n+1>
Bit <n> == 1 ⇒ The I/O range <n+1> is configured/parameterized.
System variable
$A_DP_IN_CONF
$A_DP_OUT_CONF
Valid I/O ranges for part programs / synchronized actions
Each system variable is a 32-bit bit array. Each bit is assigned to an I/O range.
Bit <n> ≙ machine data index <n> ≙ I/O range <n+1>
Bit <n> == 1 ⇒ The I/O range <n+1> is valid. Reading/writing via part programs / synchronized
actions
System variable
$A_DP_IN_VALID
$A_DP_OUT_VALID
State of an I/O range
The state of an I/O range can be read via the following system variables.
System variable
$A_DP_IN_STATE[<n>]
$A_DP_OUT_STATE[<n>]
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
A4: Digital and analog NC I/O for SINUMERIK 840D sl
Type Meaning
32-bit signed Reads a data double word (32-bit)
32-bit REAL Reads input data (32-bit REAL)
Type Meaning
8-bit unsigned Writes a data byte (8-bit)
16-bit unsigned Writes a data word (16-bit)
8-bit signed Writes a data byte (8-bit)
16-bit signed Writes a data word (16-bit)
32-bit signed Writes a data double word (32-bit)
32-bit REAL Writes output data (32-bit REAL)
Type Meaning
32-bit bit array Reads all configured input ranges
32-bit bit array Reads all configured output ranges
Type Meaning
32-bit bit array Reads all valid input ranges
32-bit bit array Reads all valid output ranges
Type Meaning
INT Reads the state of the input range
Reads the state of the output range
2.4 Direct I/O access without PLC
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