APPENDICES APPENDIX
Appendix 2 How to Find Buffer Memory Addresses
621
A
For each variable, substitute a number following the description below.
When the buffer memory address of "[Da.9] Dwell time/JUMP destination positioning data No." of the positioning data No.1 of
axis 2 is determined
6000 + (1000 (2 - 1)) + 10 (1 - 1) + 2 = 7002
Block start data
Block start data consists of five start blocks from Start block 0 to 4, and the block start data of 1 to 50 points is assigned to
each block. The start blocks are assigned to each axis. Block start data has the following structure.
When setting block start data using a program, determine buffer memory addresses using the following calculation formula
and set the addresses.
■[Da.11] Shape, [Da.12] Start data No.
Use the following calculation formula.
• 22000 + (400 (Ax - 1)) + (200 M) + (P - 1)
For each variable, substitute a number following the description below.
Variable Description
Ax The axis number of the buffer memory address to be determined. Substitute a number from 1 to 16.
N The positioning data No. of the buffer memory address to be determined. Substitute a number from 1 to 100.
S Substitute one of the following numbers according to the buffer memory address to be determined.
• Positioning identifier ([Da.1] to [Da.4], [Da.20] to [Da.22]): 0
• [Da.10] M code/Condition data No./Number of LOOP to LEND repetitions/Number of pitches: 1
• [Da.9] Dwell time/JUMP destination positioning data No.: 2
• Positioning option ([Da.27] to [Da.29]): 3
• [Da.8] Command speed (lower 16 bits): 4
• [Da.8] Command speed (upper 16 bits): 5
• [Da.6] Positioning address/movement amount (lower 16 bits): 6
• [Da.6] Positioning address/movement amount (upper 16 bits): 7
• [Da.7] Arc address (lower 16 bits): 8
• [Da.7] Arc address (upper 16 bits): 9
Variable Description
Ax The axis number of the buffer memory address to be determined. Substitute a number from 1 to 16.
M The start block No. of the buffer memory address to be determined. Substitute a number from 0 to 4.
P The block start data point of the buffer memory address to be determined. Substitute a number from 1 to 50.
50th point
2nd point
Setting item
Setting item
b0
[Da.11] Shape [Da.12] Start data No.
b8b7b15
1st point
Setting item
22000+400n
n: Axis No. - 1
22050+400n
22001+400n
22051+400n
22049+400n
22099+400n
b0
[Da.13] Special start instruction
[Da.14] Parameter
Start block 0
b15 b8b7
Buffer memory
address
Buffer memory
address
Buffer memory
address
Up to 50 block start data points can be
set (stored) for each axis in the buffer
memory addresses shown on the left.
Items in a single unit of block start data
are shown included in a bold frame.
Each axis has five start blocks (block
Nos. 0 to 4).
Start block 2 to 4 are not allocated to
buffer memory.
Set with the engineering tool.
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