Mitsubishi Electric MELSEC-L Series LD40PD01 User Manual page 118

• Parameters of "Data Frame Setting"
Variable name
Input Data Type
Data Frame Length
Multi Turn Data Length
Multi Turn Start Bit
Encoder Resolution
Single Turn Data Length
Single Turn Start Bit
Parity
*1 Set values so that the total of set values for "Multi Turn Data Length" and "Single Turn Data Length" is equal to or smaller than the value
set for "Data Frame Length". Note that the parity bit length is not included in these values.
*2 A value larger than the maximum value representable by "Single Turn Data Length" cannot be set for "Encoder Resolution".
*3 When using the encoder with the encoder type being multi turn and the input data type being gray code, make sure that its resolution of
single turn data is equal to 2
9 CREATING A HARDWARE LOGIC
116
9.1 Main Blocks in the Hardware Logic Outline Window
Data type Valid range
Word Pure binary
Gray code
Word 1 to 32 (bit)
Word 0 to 32 (bit)
Word 0 to 31 (bit)
Word 0 to 4294967295
Word 0 to 32 (bit)
Word 0 to 31 (bit)
Word None
Even
Odd
n
.
Default value Description
Pure binary Set the type of input data from the SSI encoder.
• Pure binary
• Gray code
1 (bit) Specify the effective bit length of a received data frame
from the SSI encoder.
0 (bit) Specify the effective bit length of multi turn data.
When "Encoder Type" is set to "Multi Turn", this setting
is enabled.
When this setting is disabled, a default value is set.
0 (bit) Specify the start bit position of multi turn data.
When "Encoder Type" is set to "Multi Turn", this setting
is enabled.
When this setting is disabled, a default value is set.
0 Set the encoder resolution to use the encoder with its
resolution of single turn data not equal to 2
turn data length).
When the resolution is equal to 2
from the initial value (0) is not required. (When 0 is set,
the resolution is regarded as equal to 2
When "Encoder Type" is set to "Multi Turn" and "Input
Data Type" is set to "Gray code", this setting is
disabled. When this setting is disabled, a default value
is set.
0 (bit) Specify the effective bit length of single turn data.
0 (bit) Specify the start bit position of single turn data.
When "Encoder Type" is set to "Single Turn", this
setting is enabled.
When this setting is disabled, a default value is set.
None Set whether to perform the parity check or the type of
the parity check (even or odd) according to the SSI
encoder to be connected.
• No parity check: None
• Even parity: Even
• Odd parity: Odd
*3
*1
n
(n: single
*2
n
, the setting change
n
.)
*1
*1