Mitsubishi Electronics FX3G Manuel D’Utilisation
198
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
7 Basic Instruction
7.5 LDP, LDF, ANDP, ANDF, ORP, ORF
5. Differences in the operation caused by auxiliary relay (M) numbers
When an auxiliary relay (M) is specified as a device in LDP, LDF, ANDP, ANDF, ORP and ORF instructions, the
operation varies depending on the device number range as shown in the figure below.
operation varies depending on the device number range as shown in the figure below.
<M0 to M2799, M3072 to M7679>
After M0 is driven by X000, all contacts [1] to [4] corresponding to
M0 are activated.
•The contacts [1] to [3] detect the rising edge of M0.
•Because of LD instruction, the contact [4] is conductive
while M0 is ON.
M0 are activated.
•The contacts [1] to [3] detect the rising edge of M0.
•Because of LD instruction, the contact [4] is conductive
while M0 is ON.
<M2800 to M3071>
From M2800 driven by X000, the program is divided into the upper
block (block A) and the lower block (block B). In each of the blocks
A and B, only the first contact which detects the rising or falling edge
is activated.
Because of LD instruction, the contact in the block C is conductive
while M2800 is ON.
By utilizing these characteristics, "transition of state by same signal"
in a step ladder circuit can be efficiently programmed.
block (block A) and the lower block (block B). In each of the blocks
A and B, only the first contact which detects the rising or falling edge
is activated.
Because of LD instruction, the contact in the block C is conductive
while M2800 is ON.
By utilizing these characteristics, "transition of state by same signal"
in a step ladder circuit can be efficiently programmed.
M0
[1]
M0
M51
X000
M0
SET
[2]
M0
[4]
M0
M52
SET
[3]
M50
SET
M53
Block B
M2800
X000
M2800
M1
SET
M0
SET
M2800
M2800
M3
SET
M2
SET
M2800
M2800
M5
SET
M4
SET
M2800
M2800
M6
SET
Block A
M7
M2800
Block C