Omron CJ1W-NC271 - 12-2009, Operation Manual

Page: 252 / 687

224
Transferring PCU Parameters
Section 5-2
n = CIO 1500 + (unit number
×
25)
The following diagram shows the operation for reading data from the PCU.
Timing Chart for Reading
Data From the PCU Data can be read from the PCU during axis operation if the Unit Busy Flag is
not ON (i.e., except when the PCU is initializing or reading/writing Memory
Card backup data). READ DATA, WRITE DATA, and SAVE DATA cannot be
executed at the same time.
When reading data from the PCU is completed, the Data Transferring Flag
(word n+15, bit 14) turns OFF. When an error occurs during data transfer, the
Unit Error Flag (word n+15, bit 12) turns ON, and the corresponding error
code is input in word n+21 of the Common Operating Memory Area. Check
the error code and perform appropriate troubleshooting.
02
EM1_00100
EM1_00101
EM1_00102
EM1_00103
EM1_00104
EM1_00105
EM1_00111
000C hex
1838 hex
0051 hex
0064 hex
00B0 hex
0064 hex
00B0 hex
01F4 hex
0040 hex
0000 hex
0000 hex
1838 hex
1839 hex
183A hex
183B hex
183C hex
183D hex
1843 hex
00B0 hex
0064 hex
00B0 hex
01F4 hex
0040 hex
0000 hex
0000 hex
14
: :
: :
CPU Unit PCU
Common Operating Memory Area
n = CIO 1500 + (unit number
×
25)
Word n
Word n+15
Word n+13
Word n+12
Word n+11
Word n+10
READ DATA Bit
Number of read words (12 words)
Read source address (1838 hex)
Read destination area (EM1_00100)
Data Transferring Flag (ON while transferring data)
Data Memory
Data Transfer Example
The data for the number of read
words starting from the word of
the read source address (PCU's
internal address) specified in
the Common Operating
Memory Area are transferred to
the words starting from the set
read destination area word.
Internal address
0064 hex
1838 hex
0051 hex
000C hex
00B0 hex Read data
0064 hex Read data
Number of read words (Word n+10)
Read source address (Word n+11)
Read destination area (Word n+12)
Read destination word (Word n+13)
READ DATA Bit (Word n, bit 02)
Data Transferring Flag (Word n+15, bit 14)
Unit Busy Flag (Word n+16, bit 14)
(EM1_00100)
(EM1_00101)
etc.
Specified read destination area
(example)
Data reading competed
Example: EM1_00100
The Data Transferring Flag turns ON for at
least one cycle time when the command to
transfer data is received from the PCU.
The Unit Busy Flag does not change when
data is being read.