1747-6.22, Backup Scanner User Manual

B-202 M0-M1 Files and G Files
Publication 1747-6.22
COP
COPY FILE
Source #B3:0
Dest #M0:1.0
Length 34
If you are using a SLC 5/02 Series B processor, add 1580 µs plus 670
µs per word of data addressed to the M0 or M1 file. As shown above,
34 words are copied from #B3:0 to M0:1.0. Therefore, this adds
24360 µs to the scan time of the COP instruction. If you are using a
SLC 5/02 Series C processor, add 950 µs plus 400 µs per word. This
adds 14550 µs to the scan time of the COP instruction.
SLC 5/03 Processor Example
COP
COPY FILE
Source #B3:0
Dest #M0:1.0
Length 34
The SLC 5/03 processor access times depend on the instruction type.
Consult the table on B-5 for the correct access times to add. As an
example, if you use a COP to M file instruction like the one shown
above, add 772 µs plus 23 µs per word. This adds 1554 µs to the SLC
5/03 processor scan time due to the COP instruction.
SLC 5/04 Processor Example
COP
COPY FILE
Source #B3:0
Dest #M0:1.0
Length 34
The SLC 5/04 processor access times depend on the instruction type.
Consult the table on B-5 for the correct access times to add. As an
example, if you use a COP to M file instruction like the one shown
above, add 735 µs plus 23 µs per word. This adds 1517 µs to the SLC
5/04 processor scan time due to the COP instruction.
Minimizing the Scan Time
You can keep the processor scan time to a minimum by economizing
on the use of instructions addressing the M0 or M1 files. For
example, XIC instruction M0:2.1/1 is used in rungs 1 and 2 of the
figure below, adding approximately 2 ms to the scan time if you are
using a SLC 5/02 Series B processor.