
B–61863E/15
1. SEQUENCE PROGRAM
CREATING PROCEDURE
PMC SEQUENCE PROGRAM
25
Table 1.1 PMC specifications (13)
Series 21i–B Series 16i/18i/21i–B
Model PMC–SA1 PMC–SA1
(Loader control)
PMC–SB7
Programming method Ladder Ladder Ladder
C–language
Step sequence (Note 4)
Number of ladder levels 2 2 3
First–level execution period 8 ms 8 ms 8 ms
Basic instruction processing time 5.0 µ sec/step 5.0 µ sec/step 0.033 µ sec/step
Program capacity
S Ladder (step) (Note 1,2)
S Symbol & comment (Note 2)
S Message (Note 2)
About 3,000
About 5,000
1 to 128KB
0.1 to 64KB
About 3,000
About 5,000
About 8,000
About 12,000
1 to 128KB
0.1 to 64KB
About 3,000
About 5,000
About 8,000
About 12,000
About 16,000
About 24,000
About 32,000
About 40,000
About 48,000
About 64,000
1KB or more
8KB or more
Instruction (Basic instruction)
(Functional instruction)
12
48
12
48
14
69
Internal Relay (R)
Extra Relay (E)
Message Request (A)
Nonvolatile Memory
S Data Tables (D)
S Variable Timers (T)
S Fixed Timers
S Counters (C)
Fixed Counters (C)
S Keep Relays (K)
Subprograms (P)
Labels (L)
1100 bytes
–
200 points (25 byte)
1,860 byte
40 points (80 byte)
100 points
20 points (80 byte)
–
20 byte
–
–
1,100 byte
–
200 points (25 byte)
1,860 byte
40 points (80 byte)
100 points
20 points (80 byte)
–
20 byte
–
–
8,500 byte
8,000 byte
2,000 points (500 byte,
2 bit/point)
10,000 byte
250 points (1,000 byte,
4 byte/point)
500 points (Timer number
specify)
100 points (400 byte,
4 byte/point)
100 points (200 byte,
2 byte/point)
120 byte
2000
9999
I/O I/O link
S Input
S Output
1024 points maximum
1024 points maximum
1024 points maximum
1024 points maximum
2048 points maximum (Note 3)
2048 points maximum (Note 3)
Sequence program storage media Flash ROM
128KB
Flash ROM
128KB
Flash ROM
128KB (16,000steps option or
less)
256KB (24,000steps option)
384KB (32,000/40,000steps
option)
512KB (48,000steps option)
768KB (64,000steps option)