CV500CN228 Omron, CV500CN228 Datasheet - Page 76

• 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

5-4
5-4-1 Comparing Conventional and Direct Connection Formats
Example 1
Example 2
Memory
table
Modifying Programs for Conversion
PT
PT
Conventional format
Conventional format
OK
NO
NO
OK
OK
NO
NO
This section describes the method to modify a program created for a conven-
tional Host Interface Unit (Direct Connection OFF) to use it for Direct Connec-
tion.
It is important to understand the differences between the conventional format
and Direct Connection format before modifying a program.
The modifications to the program described here are the minimum modifications
required. To use the Direct Connection format to most effectively control the PT
the programs should be entirely rewritten.
The differences between the conventional format and Direct Connection format
are described below.
The memory tables and the bits and words to control and notify the lamp and
touch switch status can be allocated almost anywhere in the PC memory. The
number of words allocated to a memory table can also be freely allocated (see
Modification and Settings 1 , page 74) .
No limit on the number of memory tables in the PC memory as memory tables,
lamps and touch switches can be independently read or written to the PC
memory (see Modification and Settings 2 , page 74).
DM
Wd
TIM
DM
PC
PC
Memory
table
PT
PT
Direct Connection format
Direct Connection format
OK
OK
OK
OK
OK
OK
OK
DM
Wd
TIM
DM
Wd
TIM
PC
PC
Section 5-4