Omron CJ - 12-2004 Manual page 107

Communications Commands
Data Check
Word address
Head 1 of Head 2 of
CS1W- CS1W-
V600C11, V600C12
CS1W- or CJ1W-
V600C12, V600C12
CJ1W-
V600C11,
or CJ1W-
V600C12
n + 1 n + 11
n + 2 n + 12
n + 3 n + 13
n + 4 n + 14
n + 5 n + 15
n + 6 n + 16
Note
88
Finds the CRC code for the data area from the specified start address to 2
bytes less that the specified number of bytes and writes 2 bytes of data.
From 3 to 2,048 bytes of data can be specified for one command execution.
Bit No. Type
08 to 15 Command
04 to 07
00 to 03
00 to 15
00 to 15
00 to 15 Data stor-
age area
12 to 15
08 to 11
00 to 07
00 to 15 Option
1. Verification will not be performed if No Verification is set for writing.
2. The last 2 bytes of the check area is the check code area. Do not write user
data to these bytes.
3. Check the memory capacity of the Data Carriers before setting the Pro-
cessing Address and Number of Processing Bytes. If the Processing Ad-
dress and Number of Processing Bytes are not suitable for the Data
Carriers for which communications are being performed, Data Carrier Ad-
dress Error (word (n + 8), bit 13) will turn ON.
Bit name
Command code
Communications specifi-
cation (Refer to page 52.)
Processing Specification
Processing Address
Number of Processing
Bytes
Data Storage Word
Address (rightmost 4 dig-
its)
Data Storage Area
Bank Specification
Data Storage Word
Address (leftmost 2 dig-
its)
Command Option
Section 6-2
Description
07 (hex)
Specify the communications method
with the Data Carrier.
0 Trigger
1 Single auto
Specify the process.
0 CRC calculation
1 CRC verification
Specify the Data Check Start address
in the Data Carrier.
Specify the number of bytes in the data
check range in the Data Carrier plus 2
bytes.
Not used
Not used