Omron V600 Series User Manual page 96

Section 5
Communications
■ 1:N Communications
Command
Controller No.
@ x x
3
Data code specification
R/W Head No.
Read area start address
No. of read bytes
Response
Less than 242 Characters in Read Data
Command
Controller No.
@ x x
3
More Than 240 Characters in Read Data
ER A/H
@Controller No.
End code
Read data
RFID System
94
Operation Manual
Data code
R/W Head No.
specifica-
Read area start address
Command code
tion
A/H 1/2
E R x x
2 1 1
Specifies the type of code in which to send the read data in the response.
A: ASCII
H: Hexadecimal
Specifies the Read/Write Head with which to communicate.
1: Read/Write Head 1
2: Read/Write Head 2
Specifies the first address from which to read data from the Data Carrier as a four-digit hexadeci-
mal number.
Specifiable range: 0000H to FFFFH
Specifies the number of bytes of data to read from the Data Carrier as a four-digit hexadecimal
number. Up to 8192 bytes can be read with one command.
Specifiable range: 0001H to 2000H
• ASCII specification: 8192 bytes (8192 characters)
• Hexadecimal code specification: 8192 bytes (16384 characters)
End code
code
Read data
E R 0 0 x x
2 2
Host device
1/2 Start address No. of read bytes FCS
Indicates the results of command execution. An end code of 00 is returned for a normal end.
Refer to End Codes for more information.
p.135
The data read from Data Carrier memory. The number of characters will be the same as the number of
read bytes for ASCII data and twice the number of read bytes for hexadecimal data.
No. of read bytes
x x x x x x
4 4
Terminator
FC S
x x x x * C R
n 2 2
1 frame = 250 characters max.
*CR
@Controller No. ER
@Controller No.
@Controller No.
@Controller No.
FCS Terminator
x x * CR
2 2
ID Controller
240 characters
Read data 1
00
240 characters
Read data 2
Read data n-1
240 characters or less
Read data n FCS
FCS CR
Frame 1
20 ms
CR
FCS
Frame 2
:
FCS
CR
Frame n-1
* CR
Frame n