Automatic Read/Write Function - Omron V600-CA8A-V Series Operation Manual

Data Carrier Motion and Command Conditions

3-1-3 Automatic Read/Write Function

Command Processing
1, 2, 3...
16
Under the automatic commands, the ID Controller does not return a response
until the DC comes close to the specified R/W Head. This means that the com-
munications path to the PC remains in the busy condition until the response is
returned, and the IBM PC/AT or compatible cannot send commands specifying
the other R/W Head of the same ID Controller.
(PC)
Auto
command
Busy
condition
Busy
condition
Command
completed
1. The PC sends the auto command to Head 1.
2. The ID Controller does not return the response until the DC comes close to
the specified R/W Head, and consequently, the IBM PC/AT or compatible
stays in the busy condition. If two R/W Heads are connected to the same ID
Controller, communications to Head 2 are not possible.
3. When the DC passes in front of a R/W Head, write or read processing is per-
formed.
4. Once processing is completed, the ID Controller sends a response to the PC
indicating that processing indicated by the auto command has been com-
pleted.
(ID Controller) (DC)
Head 1
Not close
Head 1
Not close
Read/Write
DC
Processing
Head 1
Response
Passes on
Head 1
Head 1
processing
completed
Section 3-1