CV500CN228 Omron, CV500CN228 Datasheet - Page 40

• Manufacturer Part Number: CV500CN228
• Description: Programmable Logic Controller
• Manufacturer: Omron

Specifications of CV500CN228

• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Event processing
PT processing
PT power ON
Initialize
Write initial values to memory tables
Read PT Status Control area
Read bits
Read PT Status Control area
Read numeral table
Read PT Status Control area
Read character-string memory table
Note Only data for the currently displayed screens is read from the PC. Even if a
words allocated in the control general memory for lamps and touch switches are
processed more rapidly than those allocated to other areas of memory.
memory table allocated to the PC memory is changed, the PT data contents re-
main unchanged until the memory table is used for a display screen.
When the PT status changes during PT operation, data is written to the appropri-
ate area of the PC memory. These writing processes occur only when the PT
status changes. If more than one change occurs simultaneously data is written
to the PC according to the highest order of preference.
During PT processing, the control general memory and PT Status area are read
simultaneously. The lamp and touch switch control bits and the numeral table
Restart operation
(PT
(PT
(PT
(PT
(PT









PC)
PC)
PC)
PC)
PC)
The initial values stored in the PT are written as the
memory table initial values to the allocated words in
the PC.
The PC reads and executes the contents of the PT
Status Control area to control the PT.
The PC reads the bits allocated for lamps and touch
switches and lights or turns them off as appropriate.
The PC reads the words allocated as the numer-
al tables and changes the display.
The PC reads the words allocated as the character-
string memory tables and changes the display.
Hardware and communication
status checked.
Comments
Section 3-4