Yaskawa MP900 Series Ladder Programming Manual - Manual (Page 306)

5.10 System Function Instructions
5.10.4 Read Data Trace (DTRC-RD)
5-237
Instructions
5
( 4 ) Additional Information
[ a ] Structure of Read Data
The read data is structured as shown in the following figure.
[ b ] Record Lengths
A record consists of the selected data items.
The record length (number of words in a single record) is determined by the selected registers and the number of data
items.
• Number of words for 1 record = Bn × 1 word + Wn × 1 word + Ln × 2 words + Fn × 2 words
Bn: Number of selected bit registers
Wn: Number of selected integer registers
Ln: Number of selected double-length integer registers
Fn: Number of selected real number registers
The maximum total is 16 registers.
• Maximum record length = 32 words (with 16 double-length integers or real number registers)
• Minimum record length = 1 word (with 1 record for each bit or integer register)
[ c ] Number of Records
The number of records that can be specified depends on the record length as shown below.
• Number of records with the maximum record length: 0 to 1,015
• Number of records with the minimum record length: 0 to 32,511
(Upper limit: 32,521 divided by the record length - 1)
[ d ] Latest Record Number
The most recent record number for each trace group is stored in the system registers as shown below.
Record 1 Item 1
:
:
Item 16
Record 2
:
Record n
Old
32,512 words max.
New
1 to 32 words
1 to 32 words
1 to 32 words
First address
System Register Address Description
SW00100 Latest record number in group 1.
SW00101 Latest record number in group 2.
SW00102 Latest record number in group 3.
SW00103 Latest record number in group 4.
SW00104 –
SW00105 –
SW00106 –
SW00107 –