
B–61863E/15
2. SEQUENCE PROGRAMPMC SEQUENCE PROGRAM
59
The following tables list memory capacities required for a sequence
program. Create a sequence program so that the total capacity of these
items does not exceed the sequence program memory capacity.
Table 2.8 (a) PMC–SB7
Type
Item
Memory capacity
(Note 1)
Ladder (Note 2)
Basic instruction 4 bytes
Functional instruction 4 bytes
Functional instruction parameter 4 bytes
Symbol/comment
One symbol or comment 24 bytes
(Note 2)
One half–width character in a comment 1 byte (Note 3)
Message (Note 2) One half–width alphanumeric character in
a message
1 byte (Note 4)
Others System used area About 15K bytes
Table 2.8 (b) PMC–SB4/SB6/SC4/NB2/NB6
Type
Item
Memory capacity
(Note 1)
Ladder (Note 2)
Basic instruction 4 bytes
Functional instruction 4 bytes
Functional instruction parameter 4 bytes
Symbol/comment
One symbol or comment 12 bytes
(Note 2)
One half–width character in a comment 1 byte
Message (Note 2) One half–width alphanumeric character in
a message
1 byte (Note 4)
Others System used area About 4K bytes
Table 2.8 (c) PMC–SB6 (I/O links expanded)
Type
Item
Memory capacity
(Note 1)
Ladder (Note 2)
Basic instruction 4 bytes
Functional instruction 4 bytes
Functional instruction parameter 4 bytes
Symbol/comment
One symbol or comment 12 bytes
(Note 2)
One half–width character in a comment 1 byte
Message (Note 2) One half–width alphanumeric character in
a message
1 byte (Note 4)
Others System used area About 9.5K bytes
2.8
SEQUENCE
PROGRAM MEMORY
CAPACITY