Omron V640-HS61, Руководство пользователя, Страница: 88 / 174

86
SECTION 4
When SECS Is
N
ot U
sed
CIDRW System
User’s Manual
SECTION 4
Reading from/Writing to ID Tags
When SECS Is Not Used
Command/Response Format
 1:N Protocol
 1:1 Protocol
Meaning of FCS (frame check sequence)
This is two ASCII characters obtained by conversion from the 8-bit exclusive logical sum (EOR) of the characters from
the character immediately after SOH to the character immediately before FCS.
Example: Reading the data of page 1 and page 2 of node No.1
Command
SOH Node No. Command code
Parameter
FCS CR
1
⋅ ⋅ ⋅
n
01h 0Dh
Response
SOH Node No.
Response
code
Parameter
FCS CR
1
⋅ ⋅ ⋅
n
01h 0Dh
Command
Command code
Parameter
CR
1 ⋅ ⋅ ⋅ n
0Dh
Response
Response
code
Parameter
CR
1 ⋅ ⋅ ⋅ n
0Dh
Command
Calculation range
(ASCII conversion)