Fnc171 - Gbin / Gray Code To Decimal Conversion - Mitsubishi Electric FX3G SERIES Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
22.2 FNC171 – GBIN / Gray Code to Decimal Conversion
Outline
This instruction converts a gray code into a binary value, and transfers it.
1. Instruction format
FNC 171
D GBIN P
2. Set data
Operand Type
S
D
3. Applicable devices
Bit Devices
Oper-
and System User
Type
X Y M T C S D .b KnX KnY KnM KnS
S
D
: This function is supported only in FX
Explanation of function and operation
1. 16-bit operation (GBIN and GBINP)
Command
input
FNC171
GBIN
When S is K3X000 and
GRY 1234
D10
BIN 1234
- This instruction can be used for detecting an absolute position by a gray code type encoder.
- S can store a value from 0 to 32,767.
2. 32-bit operation (DGBIN and DGBINP)
- A gray code can be converted into a binary value of up to 32 bits.
- can store a value from 0 to 2,147,483,647.
S
Caution
When an input relay (X) is specified as
The input filter value in X000 to X017
adjustment) so that the delay caused by the filter constant is eliminated.
*1. X000 to X007 in FX
Mnemonic
16-bit Instruction
GBIN
5 steps
GBINP
Conversion source data or word device storing conversion source data
Word device storing data after conversion
Digit Specification
/FX
3U 3UC
This instruction converts and transfers data from
S
D
the source (gray code) to the destination (binary).
D
is D10
X13 X10 X7
0 1 1 0 1 0
b15
0 0 0 0 0 1 0 0 1 1
S , the response relay will be "Scan time of PLC + Input filter constant".
*1
can be converted using the REFF (FNC51) instruction or D8020 (filter
PLCs
3G
22 External Device – FNC170 to FNC179
22.2 FNC171 – GBIN / Gray Code to Decimal Conversion
Operation Condition
32-bit Instruction
Continuous
9 steps
Operation
Pulse (Single)
Operation
Description
Word Devices
Special
System User Index
Unit
T C D R U \G V Z Modify K
PLCs.
X0
1 1 1 0 1 1
b0
0 1 0 0 1 0
Mnemonic Operation Condition
DGBIN Continuous
Operation
DGBINP
Pulse (Single)
Operation
Data Type
16- or 32-bit binary
16- or 32-bit binary
Others
Con- Real Charac-
Pointer
stant Number ter String
H E " " P
583
21
22
23
24
25
26
27
28
29
30