Omron V600 Series Operation Manual page 17

Data Carrier Motion and Command Conditions
3-1-2 Command Reception Status
Command Wait Status
Command Processing
Status
Polling Auto Subcommand
Wait Status
3-1-3 Read and Write Functions
Command Processing
During Read/Write
Operations
1, 2, 3...
This is the condition in which no command processing is being performed, and
the ID Controller is ready to accept any command. Once a command is received,
it enters the command processing status.
Commands received during the interval from when a command has been
accepted until a response indicating the command processing has been com-
pleted has been returned, are ignored. However, one exception during proces-
sing of auto read and auto write commands (see page 37 to 38) is that the auto
command processing's abort command can be accepted.
Note This command processing status does not include the polling auto command.
This refers to the situation when a polling auto command is sent and the DC has
not arrived in front of the specified R/W Head. In this status, the specified R/W
Head can only accept subcommands. Subcommands are commands that query
the wait status for approach of the DC at the R/W Head (see page 39 to 41). In
the polling auto subcommand wait status, commands can be sent to the other
R/W Head.
The read/write functions are used for communications when the DC is station-
ary. Thus, before using these commands, it is necessary to check that the DC is
at a specific position. If the DC is not in a specified position, an error response is
returned.
(Host Computer)
Read/Write
Command
Command
completed
1. Once it is confirmed that the DC has stopped in the specified position, the
host computer sends the command.
2. The ID Controller follows the command and performs read/write operations.
3. After processing has been completed, the ID Controller returns a proces-
sing completed response to the host computer. The host computer accepts
the response and once again starts the line workpiece, with the DC
attached, in motion.
(ID Controller) (DC)
Not close
DC
(stationary)
Read/Write
DC
processing
(stationary)
Response
In motion
Section 3-1
15