Mitsubishi MELSEC iQ-F FX5 series User Manual

6 BASIC INSTRUCTIONS
6.2 Arithmetic Operation Instructions
167
6
SUB(P)(_U)
These instructions subtract the 16-bit binary data in the device specified by (s1) and the 16-bit binary data in the device
specified by (s2), and store the result in the device specified by (d).
*1 The SUB instruction is not supported by the ST language. Use SUB of the standard function.
Page 781 SUB(_E)
Setting data
■Descriptions, ranges, and data types
■Applicable devices
Processing details
• These instructions subtract the 16-bit binary data in the device specified by (s1) and the 16-bit binary data in the device
specified by (s2), and store the subtraction result in the device specified by (d).
■Relationship between the flag operation and the sign (positive or negative) of a numeric value
Ladder diagram Structured text
*1
ENO:=SUBP(EN,s1,s2,d); ENO:=SUB_U(EN,s1,s2,d);
ENO:=SUBP_U(EN,s1,s2,d);
Operand Description Range Data type Data type (label)
(s1) SUB(P) Subtrahend data or the device where the data
to be subtracted from another is stored
-32768 to +32767 16-bit signed binary ANY16_S
SUB(P)_U 0 to 65535 16-bit unsigned binary ANY16_U
(s2) SUB(P) Subtrahend data or the device where the data
to be subtracted from another is stored
-32768 to +32767 16-bit signed binary ANY16_S
SUB(P)_U 0 to 65535 16-bit unsigned binary ANY16_U
(d) SUB(P) Device for storing the operation result  16-bit signed binary ANY16_S
SUB(P)_U  16-bit unsigned binary ANY16_U
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB
U\G T, ST,
C, LC
T, ST, C, D,
W, SD, SW, R
U\G Z LC LZ K, H E $
(s1)       
(s2)       
(d)       
Device Name Description
SM700, SM8022 Carry When the operation result exceeds the upper limit of the data setting range, the carry flag is turned ON.
SM8020 Zero When the operation result is 0, the zero flag is turned ON.
SM8021 Borrow When the operation result is less than the lower limit of the data setting range, the borrow flag is turned ON.
(s1) (s2) (d)
b15 b0
5678 (BIN)
(s1) (s2) (d)
1234 (BIN) 4444 (BIN)
-
···
b15 b0
···
b15 b0
···
Zero Flag
Borrow flag
Zero Flag
Carry flag
Zero Flag
-2, -1, 0, -32768 32767, 0, 1, 2-1, 0, 1
The most significant
bit of data becomes "1".
The most significant
bit of data becomes "0".

Mitsubishi MELSEC iQ-F FX5 series Specifications

General

Brand	Mitsubishi
Model	MELSEC iQ-F FX5 series
Category	Controller
Language	English