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FX Series Programmable Controlers
Applied Instructions 5
5-80
5.8
External FX I/O Devices - Functions 70 to 79
Contents:
Page
TKY - 
Ten Key Input 
FNC 70 
5-81
HKY - 
Hexadecimal Input 
FNC 71 
5-82
DSW - 
Digital Switch
(Thumbwheel input) 
FNC 72 
5-83
SEGD - 
Seven Segment Decoder 
FNC 73 
5-84
SEGL - 
Seven Segment
With Latch 
FNC 74 
5-85
ARWS - 
Arrow Switch 
FNC 75 
5-87
ASC - 
ASCII Code 
FNC 76 
5-88
PR- 
‘Print’ To A Display FNC 
77 
5-89
FROM - 
Read From A Special
Function Block 
FNC 78 
5-90
TO - 
Write To A Special
Function Block 
FNC 79 
5-91
Symbols list:
D - Destination device.
S - Source device.
m, n- Number of active devices, bits or an operational constant.
Additional numeric suffixes will be attached if there are more than one operand with the same
function e.g. D
1
, S
or for lists/tabled devices D
3+0, 
S
+9 
etc.
MSB - Most Significant Bit, sometimes used to indicate the mathematical sign of a number, i.e.
positive = 0, and negative = 1.
LSB - Least Significant Bit.
Instruction modifications:
 
An instruction operating in 16 bit mode, where 
 identifies the instruction
mnemonic.
P -  A 16 bit mode instruction modified to use pulse (single) operation.
D
 
-  An instruction modified to operate in 32 bit operation.
D
P -  A 32 bit mode instruction modified to use pulse (single) operation.
 
- A repetitive instruction which will change the destination value on every scan unless
modified by the pulse function.
 
- An operand which cannot be indexed, i.e. The addition of V or Z is either invalid or will
have no effect to the value of the operand.