The User Program - Omron SYSMAC C200H-IDS01-V1 Operation Manual

The User Program

2-3 The User Program
Operation Outline
Word data
Dedicated command
Read data
User program
MOV, OUT etc.
(Command execution flag)
MOV, LD instruction etc.
(Error information)
Effect of CPU Status on ID
Sensor Unit
Communication with the
CPU
The ID Sensor Unit will not function unless the PC is programmed to control
the operation of the Unit. The Unit communicates with the Data Carrier
through the Read/Write Head by means of the commands provided by the
user program of the PC.
Program examples with detailed explanations are provided in Section 3-1
Program Examples.
The following figure shows the basic operation outline of the program.
PC
The ID Sensor Unit is controlled by the program contained in the CPU; if an
error occurs in the CPU, an error will also occur in the ID Sensor Unit.
The ID Sensor Unit will continue to execute commands when the PC is in
PROGRAM mode.
The ID Sensor Unit reads data from and writes data to the Data Carrier in
accordance with the commands sent from the CPU.
ID Sensor Unit
Internal program
Analyzes the
command
and transfers
the data
Common
between PC
memory
and Data
Carrier
I/O word
Executes
handshaking
and pro-
cesses error
words n
information
through
n+4
Section 2-3
R/W Data
Head Carrier
17