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Section 4
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V700-L11
User's Manual
Section 4
Data Read/Write with ID Tag
➁
Configuration involving link unit-OMRON original 1:N protocol
When intending to operate a link unit, OMRON original 1:1 protocol format is prefixed with [SOH] and Node
No. and suffixed with a check code.
■
Command frame structure
∗
Transmit the data such that the inter-character spacing is less than 200 ms. Otherwise, previously
received characters are ignored.
●
Node No.
This entry indicates the Node No. defined by the DIP SW on the link unit.
●
Check code
Characters beginning with a character next to [SOH], ending with a one immediately before the check
code, is each transformed into 8-bit data through Exclusive-OR logic (ExOR), and the 8-bit data is con-
verted into two ASCII code characters.
Ex: 01020000000600 (check code)
Check code = "05"
30h (ExOR) 31h (ExOR) 30h (ExOR) 32h (ExOR) 30h (ExOR) 30h (ExOR) 30h (ExOR) 30h
(ExOR) 30h (ExOR) 30h (ExOR) 30h (ExOR) 36h (ExOR) 30h (ExOR) 30h = 05h
(ASCII conversion)
↓
"0"(30h)"5"(35h)
■
Response frame structure
■
(Examples of command execution)
➀
A case where the data in page 1 is read out, with IDRWH directly connected to upstream controller
Command : 0 1 0 0 0 0 0 0 0 0 0 4 [CR]
Response : 0 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 [CR]
➁
A case where the data in page 1 is written, with IDRWH connected to upstream controller via link unit
Command : [SOH] 0 1 0 2 0 0 0 0 0 0 0 0 0 4 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 0 1 [CR]
Response : [SOH] 0 1 0 0 0 1 [CR]
SOH Node No.
Command
Parameter 1
Parameter n Check code
CR
$01
$0D
SOH Node No. Command Parameter 1
Parameter n Check code CR
$01
$0D
Read
command
Page 1
designation
Response
code
Read data
Node No. Write
command
Page 1 designation
Write data
Check code
Node No.
Response code
Check code