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79
Communications Commands
Section 6-2
6-2-2
Command Descriptions
Read
Reads the specified number of bytes from the specified start address in the
Data Carrier.
Up to 2,048 bytes (i.e., 1,024 words) can be read with one command execu-
tion.
Note
Check the memory capacity of the Data Carriers before setting the Process-
ing Address and Number of Processing Bytes. If the Processing Address and
Number of Processing Bytes are not suitable for the Data Carriers for which
communications are being performed, the Data Carrier Address Error Flag
(word (n + 8), bit 13) will turn ON.
Word address
Bit No.
Type
Bit name
Description
Head 1 of
CS1W-
V600C11,
CS1W-
V600C12,
CJ1W-
V600C11,
or CJ1W-
V600C12
Head 2 of
CS1W-
V600C12
or CJ1W-
V600C12
n + 1
n + 11
08 to 15
Command
Command code
00 (hex)
04 to 07
Communications Specifi-
cation (Refer to page 52.)
Specify the communications method
with the Data Carrier.
0
Trigger
1
Single auto
2
Repeat auto
00 to 03
Processing Specification
(Refer to page 46.)
Specify the read data storage order.
0
Leftmost
→
Rightmost
1
Rightmost
→
Leftmost
n + 2
n + 12
00 to 15
Processing Address
Specify the first Data Carrier address to
read.
n + 3
n + 13
00 to 15
Number of Processing
Bytes
Specify the number of Data Carrier
read bytes.
n + 4
n + 14
00 to 15
Data stor-
age area
Data Storage Word
Address (rightmost 4 dig-
its)
Specify the read data storage destina-
tion. Refer to page 46 for details.
n + 5
n + 15
12 to 15
Data Storage Area
08 to 11
Bank Specification
00 to 07
Data Storage Word
Address (leftmost 2 dig-
its)
n + 6
n + 16
00 to 15
Option
Command Option
Not used
Summary of Contents for CJ - 12-2004
Page 2: ...SYSMAC CS CJ Series ID Sensor Units Operation Manual Revised December 2004...
Page 3: ...iv...
Page 11: ...xii...
Page 55: ...36 Connections and Wiring Section 3 4...
Page 69: ...50 I O Data Allocations Section 4 3...
Page 91: ...72 Data Check Section 5 7...
Page 141: ...122 Sample Programming Appendix B...
Page 147: ...128 Revision History...