Yaskawa MEMOCON GL120 User Manual

Page 93

4.3 CPU Modules

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Item

Specifications

Instruction Word Length

1) Relays:

1 word per instruction

2) Timers/Counters:

2 to 3 words per instruction

3) Math instructions:

2 to 3 words per instruction

4) Data process instructions: 2 to 3 words per instruction

Instruction Execution Time

1) Contacts:

1.30 to 1.45 µs

2) Coils:

1.90 to 2.50 µs

3) Unsigned 4-digit Decimal Addition Instructions: 4.80 to 5.35 µs

4) Block Transfer Instructions (size: 1):

2.65 µs

Block Transfer Instructions (size: 50):

22.25 µs

Block Transfer Instructions (size: 100):

42.25 µs

Scan Time

Approx. 1ms per 1K words by ladder diagram program
Remarks: The components of ladder diagram program and their ratio used in measur-

ing the scan time are as follows:

Contacts:

60%

Coils:

15%

SDAT instructions:10%

SUB instructions: 10%

BLKM instructions: 5%

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