5. SEQUENCE PROGRAMS AND SFC PROGRAMS
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5. SEQUENCE PROGRAMS AND SFC PROGRAMS
This section explains how to start a servo program using a sequence program or
SFC program for positioning control, and gives other information.
5.1 Cautions on Creating a Sequence Program or SFC Program
The following cautions should be observed when creating a sequence program or
SFC program.
(1) Positioning control instructions
The servo program start request instruction (SVST) (see Section 5.2) and the
current value change/speed change instructions (CHGA/CHGV) instructions (see
Section 5.3) are used as positioning instructions.
(2) Dedicated devices for the PCPU
Of the servo system CPU devices, those shown in Table 5.1 are exclusively for
use with the PCPU.
Check the applications of devices before using them in the sequence program
(for details, see Section 3).
Table 5.1 Dedicated Devices for the PCPU
Device Name Device No.
Internal relays M2000 to M3839
Data registers D0 to D799
Special relays M9073 to M9079
Special registers D9180 to D9199
Note that internal relays (M2000 to M3839) and data registers (D0 to D799) will
not be latched even if a latch range setting is made for them. (The device
symbols for M2000 to M3839 are displayed as M, L, and S by the GPP device
in accordance with the M, L, and S settings in the parameters.)
(3) SFC programs
Refer to the manuals below for details on the SFC programming method.
MELSAP II Programming Manual (IB-66361)
SW2SRX-GSV13PE Operating Manual (IB-67266)
SW2SRX-GSV22PE/SW0IX-CAMPE Operating Manual (IB-67399)
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