
4. INTERFACE BETWEEN NC AND PMC
B–63445EN/01
86
Model PMC–PA1
Programming method language Ladder
Number of ladder level 2
Level–1 Cycle Time 8 ms
Basic Instruction Execution Time 4.5
(µs/step)
Program capacity
S Ladder (step) Approx. 3,000
S Symbol/comment (Note) 1 to 128KB
S Message 0.1 to 64KB
S Language only –
Instruction (Basic)
(Function)
12 kinds
47 kinds
Internal relay (R) 1110 byte
Message request (A) 25 byte
Non–volatile
S Var. Timer (T) 80 byte
S Counter (C) 80 byte
S Keep relay (K) 20 byte
S Data table (D) 1860 byte
Fixed timer Timer No. 100
devices specified
Input/output
S Built–in I/O card (I) 32 point max.
(O) 24 point max.
Sequence program storage media Back–up SRAM
NOTE
Normal size of a symbol, a comment, and a message are
1KB, and 0.1KB, respectively. Max. size of a symbol and a
comment are each 64KB.
4.2
SPECIFICATION OF
PMC
4.2.1
Specification