NAiS FP1, Hardware Manual

Page: 146 / 280

Description
• Compares the double word data specified by S1 and S1+1, with the double word data specified
by S2 and S2+1, according to the comparative conditions. The contact is connected in parallel
depending on the results of the comparative conditions.
• The result of the comparison operation is as follows:
■
Flag condition
• Error flag (R9007): Turns ON and keeps the ON state when the area specified using the
index modifier exceeds the limit. The error address is transferred to
DT9017 and held. (See notes below.)
• Error flag (R9008): Turns ON for an instant when the area specified using the index
modifier exceeds the limit. The error address is transferred to DT9018.
(See notes below.)
Notes:
Notes:
• The OR comparison instructions
ORD =
,
ORD <>
,
ORD >
,
ORD >=
,
ORD <, and ORD <=
are
programmed from the bus line.
• Multiple OR comparison instructions
ORD =
,
ORD <>
,
ORD >
,
ORD >=
,
ORD <, ORD <=
can be
used consecutively.
• This instruction can be input only with FP Programmer
II
or NPST-GR version 3.1 or later.
• When processing 32-bit data, the higher 16-bit areas (S1+1, S2+1) are automatically decided if the lower
16-bit areas (S1, S2) are specified.
• Special data registers DT9017 and DT9018 are available only for FP1s with CPU
version 2.7 or later. (All FP1s with a suffix “B” on the part number have this function.)
• When using special internal relay R9008 as the flag for this instruction, be sure to
program the flag at the address immediately after the instruction.
• Refer to page 223, “8-3. Table of Special Internal Relays”, for details about error flags.
ON
OFF
ORD <>
ORD =
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ORD =
ORD <>
ORD >
ORD >=
ORD <
ORD <=
Comparative
instruction
Comparative
condition
ON
OFF
ON
OFF
ORD >=
ORD >
ON
OFF
ON
OFF
ORD <=
ORD <
(S1+1, S1) < (S2+1, S2)
ON
OFF
Contact
operation
Condition
(S1+1, S1) =
(S1+1, S1)
(S1+1, S1)
(S1+1, S1) =
(S1+1, S1) >
(S1+1, S1)
(S1+1, S1)
(S1+1, S1) <
(S1+1, S1) <
(S1+1, S1)
(S1+1, S1)
(S1+1, S1) >
(S2+1, S2)
(S2+1, S2)
(S2+1, S2)
(S2+1, S2)
(S2+1, S2)
(S2+1, S2)
(S2+1, S2)
(S2+1, S2)
(S2+1, S2)
(S2+1, S2)
(S2+1, S2)
(S2+1, S2)
(S1+1, S1) = (S2+1, S2) (S1+1, S1) > (S2+1, S2)
ON [(DT1, DT0) = K50]
OFF [(DT1, DT0)
K50]
ON [(DT11, DT10) > K40]
OFF [(DT11, DT10)
K40]
ON
OFF
K10
K30
K40
K50
K20
ORD >
STD =
Y0
(DT11, DT10)
(DT1, DT0) = K50 (DT1, DT0) K50
■
Time chart
138
5-3. Description of Basic Instructions