Mitsubishi Electric MELSEC FX3U Programming Manual page 201

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
5. Bit specification of data register (D)
A bit in data register (D) can be specified as a device used in OR and ORI instructions.
Circuit program
X000
D0.3
*1. This function is supported only in FX
Errors
• When an I/O number used in OR or ORI instruction does not exist due to indexing, M8316 (Non-existing I/
O specification error) turns ON.
• When the device number of a device (M, T or C) other than I/O used in OR or ORI instruction does not
exist due to indexing, an operation error (error code: 6706) occurs.
*1
List program
0000 LD X000
0001 OR D0.3
Y000
0004 OUT Y000
/FX
3U 3UC
When specifying a bit in data register, input "."
after a data register (D) number, and then
input a bit number (0 to F) consecutively.
Only 16-bit data registers are available.
Specify a bit number as "0, 1, 2, ... 9, A, B, ...
F" from the least significant bit.
Example:In the example shown on the left,
OR contact is set to ON (becomes
conductive) or OFF (becomes non-
conductive) by the bit 3 of D0.
PLCs.
7 Basic Instruction
7.4 OR, ORI
1
2
3
4
5
6
7
8
9
10
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