S7-PCI315:Instruction set

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S7-PCI315 instruction set

The S7-PCI315 PLC has the complete instruction set of the SIMATIC® S7-315 PLC.

Bit logic instructions

Instruction Operand Description
A AND with a scan to "1"
AN AND with a scan to "0"
O OR with scan to "1"
ON OR with scan to "0"
X Exclusive-OR with a scan to "1"
XN Exclusive-OR with a scan to "0"
I of an input
Q of an output
M of a memory flag
L of a local data bit
T of a timer
C of a counter
DBX of a data bit
DIX of an instance data bit
==0 result equal zero
<>0 result unequal zero
>0 result greater than zero
>=0 result greater or equal zero
<0 result less than zero
<=0 result less or equal zero
UO invalid result
OV overflow
OS Überoverflow (saved)
BR binary result


Other boolean logic instructions

Operation Operand Description
A( AND left parenthesis
AN( AND NOT left parenthesis
O( OR left parenthesis
ON( OR NOT left parenthesis
X( Exclusive OR left parenthesis
XN( Exclusive OR NOT left parenthesis
) Right parenthesis
O OR-ing AND operations
NOT Negate RLO
SET Set RLO to "1"
CLR Set RLO to "0"
SAVE Save RLO to the BR bit
Operation Operand Description
= Assign value of RLO
S Set
R Reset
FP Positive edge detection
FN Negative edge detection
I of an input bit
Q of an output bit
M of a flag memory bit
L of a local data bit
DBX of a data bit
DIX of an instance data bit


Master Control Relay

Operation Operand Description
MCRA Activate MCR
MCRD Deactivate MCR
MCR( Open MCR zone
)MCR Close MCR zone


Load / Transfer instructions

Operation Operand Description
L Load operand
T Transfer operand
IB InpuInput byte
IW Input word
ID Input double word
QB Output byte
QW Output word
QD Output double word
MB Memory byte
MW Memory word
MD Memory double word
LB Local data byte
LW Local data word
LD Local data double word
DBB Data block byte
DBW Data block word
DBD Data block double word
DIB Instance data block byte
DIW Instance data block word
DID Instance data block double word
STW Status word
L Const Load constant value
L #Pointer Load pointer
L T Timer
LC T Timer (BCD coded)
L C Counter
LC C Counter (BCD coded)
L DBNO Data block number
L DBLG Data block length
L DINO Instance data block number
L DILG Instance data block length

Peripheral access instructions

Operation Operand Description
L PIB Load peripheral input byte
L PIW Load peripheral input word
L PID Load peripheral input double word
T PQB Transfer peripheral output byte
T PQW Transfer peripheral output word
T PQD Transfer peripheral output double word


Accumulator instructions

Operation Operand Description
PUSH Push accumulators upwards
POP Push accumulators downwards
ENT Push accumulators (without A1) A2->A3, A3->A4
LEAVE Push accumulators (without A1) A4->A3, A3->A2
TAK Change ACCU1 with ACCU2
CAW Change ACCU1 bytes 0 and 1
CAD Change ACCU1 bytes 0 and 3, 1 and 2


Shift and rotating instructions

Operation Operand Description
SLW Shift ACCU1-L left (word shift)
SLD Shift ACCU1 left (double word shift)
SRW Shift ACCU1-L right (word shift)
SRD Shift ACCU1 right (double word shift)
SSI Shift ACCU1-L right (word shift with sign)
SSD Shift ACCU1 right (double word shift with sign)
RLD Rotate ACCU1 left (double word)
RLDA Rotate ACCU1 left through CC1
RRDA Rotate ACCU1 right through CC1
RRD Rotate ACCU1 right (double word)
Const Number of places to shift/rotate
Number of places to shift/rotate located in ACCU2

Timer instructions

Operation Operand Description
SP T Start as impulse
SE T Start as extended impulse
SD T Start as ON-delay
SS T Start as saving ON-delay
SF T Start as OFF-delay
R T Reset timer
FR T Enable timer

Counter instructions

Operation

Operand

Description

CU

C

Count up (increment)

CD

C

Count down (decrement)

S

C

Set counter

R

C

Reset counter

FR

C

Enable counter

Word instructions

Operation

Operand

Description

AW

 

AND ACCU1-L (AND word)

AD

 

AND ACCU1 (AND double word)

OW

 

OR ACCU1-L (OR word)

OD

 

OR ACCU1 (OR double word)

XOW

 

Exclusive-OR ACCU (XOR word)

XOD

 

Exclusive-OR ACCU (XOR double word)

 

Const

with a word or double word constant

 

 

with ACCU2

Arithmetic instructions

Operation

Operand

Description

==I

 

Integer values equal

<>I

 

Integer values unequal

>I

 

Integer values greater

>=I

 

Integer values greater or equal

<I

 

Integer values less

<=I

 

Integer values less or equal

==D

 

Double integer values equal

<>D

 

Double integer values unequal

>D

 

Double integer values greater

>=D

 

Double integer values greater or equal

<D

 

Double integer values less

<=D

 

Double integer values less or equal

==R

 

Real values equal

<>R

 

Real values unequal

>R

 

Real values greater

>=R

 

Real values greater or equal

<R

 

Real values less

<=R

 

Real values less or equal

SIN

 

Sine of a real value

COS

 

Cosine of a real value

TAN

 

Tangent of a real value

ASIN

 

Arcsine of a real value

ACOS

 

Arccosine of a real value

ATAN

 

Arctanget of a real value

SQR

 

Square a real value

SQRT

 

Square root a real value

EXP

 

e to the power of a real value

LN

 

Natural logarithm of a real value

+I

 

Integer addition

-I

 

Integer subtraction

  • I

 

Integer multiplication

/I

 

Integer division

+D

 

Double integer addition

-D

 

Double-integer subtraction

  • D

 

Double-integer multiplication

/D

 

Double-integer division

+R

 

Real addition

-R

 

Real subtraction

  • R

 

Real multiplication

/R

 

Real division

MOD

 

Double integer division (modulo)

+

Const

Add a constant

+P#

Const

Add a pointer

DEC

 

decrement ACCU1-LL (one byte)

INC

 

increment ACCU1-LL (one byte)

Data type conversion instructions

Operation

Operand

Description

ITD

 

Convert integer to double integer

ITB

 

Convert integer to BCD

DTB

 

Convert double integer to BCD

DTR

 

Convert double integer to real

BTI

 

Convert BCD to integer

BTD

 

Convert BCD to double integer

RND

 

Convert real to double integer (round)

RND+

 

Convert real to double integer (round up)

RND-

 

Convert real to double integer (round down)

TRUNC

 

Convert real to double integer (truncate)

INVI

 

Invert ACCU1-L (integer)

INVD

 

Invert ACCU1 (double integer)

NEGI

 

Negate ACCU1-L (integer)

NEGD

 

Negate ACCU1 (double integer)

NEGR

 

Negate ACCU1 (real)

ABS

 

Absolute value (real)

Jump instructions

Operation

Operand

Description

JU

Destination

Jump unconditional

JC

Destination

Jump if RLO = 1

JCB

Destination

Jump if RLO = 1 (save RLO)

JCN

Destination

Jump if RLO = 0

JNB

Destination

Jump if RLO = 0 (save RLO)

JBI

Destination

Jump if BR = 1

JNBI

Destination

Jump if BR = 0

JZ

Destination

Jump if compare result = 0

JN

Destination

Jump if compare result ≠ 0

JP

Destination

Jump if compare result > 0

JPZ

Destination

Jump if compare result >= 0

JM

Destination

Jump if compare result < 0

JMZ

Destination

Jump if compare result <= 0

JUO

Destination

Jump if compare result "Unordered Math Instruction"

JO

Destination

Jump on overflow

JOS

Destination

Jump on saved overflow

JL

Destination

Jump distributor

LOOP

Destination

Loop programming (decrement ACCU1-L and jump if ≠ 0

Block call instructions

Operation

Operand

Description

CALL FB

 

Unconditional call of an FB with parameter transfer

CALL FC

 

Unconditional call of an FC with parameter transfer

CALL SFB

 

Unconditional call of an SFB with parameter transfer

CALL SFC

 

Unconditional call of an SFC with parameter transfer

UC FB

 

Unconditional call of an FB without parameter transfer

CC FB

 

Conditional call of an FB without parameter transfer

UC FC

 

Unconditional call of an FC without parameter transfer

CC FC

 

Conditional call of an FC without parameter transfer

BEU

 

End block unconditionally

BEC

 

End block conditionally (RLO = 1)

BE

 

End block

OPN

DB

Open data block

 

DI

Open instance data block

TDB

 

Exchange data block registers

Indirect adressing instructions

Operation

Operand

Description

LAR1

 

Load AR1

LAR2

 

Load AR2

 

MD

with memory double word

 

LD

with local data double word

 

DBD

with datablock double word

 

DID

with instance data block double word

LAR1

 

Load AR1 with ACCU1

LAR2

 

Load AR2 with ACCU1

LAR1

AR2

Load AR1 with AR2

LAR1

P#

Load AR1 with pointer

LAR2

P#

Load AR2 with pointer

TAR1

 

Transfer in AR1

TAR2

 

Transfer in AR2

 

MD

in memory double word

 

LD

in local data double word

 

DBD

in datablock double word

 

DID

in instance data block double word

TAR1

 

Transfer AR1 in ACCU1

TAR2

 

Transfer AR2 in ACCU1

TAR1

AR2

Transfer AR1 in AR2

TAR

 

Swap AR1 with AR2

+AR1

 

Add ACCU1 to AR1

+AR2

 

Add ACCU1 to AR2

+AR1

P#

Add pointer to AR1

+AR2

P#

Add pointer to AR2

Program display and null operation instructions

Operation

Operand

Description

NOP

0

Null operation instruction

NOP

1

Null operation instruction

BLD

Const

Program display instruction (null operation)

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