Omron V600 Series Operation Manual page 18

Data Carrier Motion and Command Conditions
3-1-4 Automatic Read/Write Function
Automatic 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 host computer remains in the busy condition until the
response is returned, and the host computer cannot send commands specifying
another R/W Head of the same ID Controller.
(Host Computer) (ID Controller)
Auto
command
Head 1
Busy
condition
Head 1
Busy
condition
Read/Write
processing
Head 1
Response
Command
completed
Head 1
Head 1
processing
completed
1. The host computer 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 host computer 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.
Section
(DC)
Not close
Not close
DC
Passes on
3-1