7 FBD Program
A-16 SmartAXIS Touch User’s Manual
● FB Size and Number of Used Devices
The size (quantities of bytes) and the number of used devices of FBs are listed below.
*1 The size of the WEEK/YEAR FB varies depending on the number of tabs.
Group Name Symbol Qty of Bytes Device type
Number of
Used devices
Logical
Operation
Logical AND AND 12
B
1
Negative Logical AND NAND 12 1
Logical OR OR 12 1
Negative Logical OR NOR 12 1
Exclusive Logical OR XOR 8 1
Negative Exclusive Logical
OR
XNOR 8 1
Negation NOT 8 1
Shot Up SOTU 8 1
Shot Down SOTD 8 1
Truth Table TRUTH 16 1
Timer
On-delay Count Up Timer TIMU 8
T
1
On-delay Count Down
Timer
TIMD 8 1
Off-delay Count Up Timer TIMOU 12 1
Off-delay Count Down
Timer
TIMOD 12 1
On/off-delay Timer TIMCU 12 2
Single Shot Pulse SPULS 12 1
Dual Timer DTIM 12 3
Random Pulse Output RPULS 12 3
Counter
Adding Counter
CNT(W) 12
C
1
CNT(D) 12 2
Up/Down Selection
Reversible Counter
CUD(W) 16 3
CUD(D) 16 6
Hour Meter HOUR 12 3
Shift Register Shift Register SFR 16
B
1
Data
Comparison
Data Comparison CMP 16 1
Schmitt Trigger STTG 20 1
Range Comparison RCMP 20 1
Data Conversion Alternate Output ALT 12 1
Week
Programmer
Weekly Timer
*1
WEEK 20 to 130 1
Yearly Timer
*1
YEAR 24 to 212 1
Script Script SCRPT 12 1
Special
High-speed Counter HSC 12 1
RS Flip-flop RSFF 8 1
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