Omron SYSMAC CS Series Instruction & Reference Manual page 55

Values Represented in 1-word Data
Value
(Decimal)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
:
9999
10000
:
32767
32768
:
65535
−1
:
−32768
−32769
CS/CJ/NSJ Series Instructions Reference Manual (W474)
The two's complement b Hex of a Hex is FFFF Hex − a Hex + 0001 Hex =
b Hex. To determine the two's complement b Hex of "a Hex," use b Hex =
10000 Hex − a Hex.
Example: to determine the two's complement of 3039 Hex, use 10000 Hex
− 3039 Hex = CFC7 Hex.
Similarly use a Hex = 10000 Hex
from the two's complement b Hex.
Example: To determine the real value from the two's complement CFC7
Hex use 10000 Hex − CFC7 Hex = 3039 Hex.
The CS/CJ Series has two instructions: NEG(160)(2'S COMPLEMENT)
and NEGL(161) (DOUBLE 2'S COMPLEMENT) that can be used to deter-
mine the two's complement from the true number or to determine the true
number from the two's complement.
Binary representation
Decimal representations
Unsigned Signed
&1
&2
&3
&4
&5
&6
&7
&8
&9
&10
&11
&12
&13
&14
&15
&16
:
&9999
&10000 +10000
:
&32767 +32767
&32768 Not applicable.
:
&65535
Not applicable.
−32768
Not applicable.
1. Basic Understanding of Instructions
b Hex to determine the value a Hex
−
Hexadecimal
representation
+1 #0001
+2 #0002
+3 #0003
+4 #0004
+5 #0005
+6 #0006
+7 #0007
+8 #0008
+9 #0009
+10 #000A
+11 #000B
+12 #000C
+13 #000D
+14 #000E
+15 #000F
+16 #0010
: :
+9999 #270F
#2710
: :
#7FFF
#8000
:
#FFFF
−1 #FFFF
: :
#8000
Not applicable.
BCD representation
(decimal)
#0001
#0002
#0003
#0004
#0005
#0006
#0007
#0008
#0009
#0010
#0011
#0012
#0013
#0014
#0015
#0016
:
#9999
Not applicable.
Not applicable.
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