Mitsubishi FX3G Series Programming Manual page 552

FX /FX /FX /FX
3G 3U 3GC 3UC
Programming Manual - Basic & Applied Instruction Edition
Explanation of function and operation
Command
input
FNC157
PLSV
Caution on writing during RUN
During RUN, avoid writing while PLSV (FNC157) instruction is executed (that is, while pulses are output).
Note that if writing is executed during RUN to a circuit block including FNC157 instruction while pulses are output, the
PLC executes the operation shown below.
During operation with acceleration/deceleration
During operation without acceleration/deceleration
*1. Only available for FX
Function change depending on the version
The function of the FNC157 instruction is changed depending on the version as shown in the table below.
Applicable version
FX FX
3G 3U
Ver. 1.00 Ver. 2.20
or later or later
550
Series
S D D
1 1 2
*1
PLC Ver. 2.20 or later and FX
3UC
→ For explanation of the instruction and the contents of function change,
FX FX
3GC 3UC
Acceleration/
Ver. 1.40 Ver. 2.20
deceleration operation
or later or later
function
20 Positioning Control – FNC150 to FNC159
20.6 FNC157 – PLSV / Variable Speed Pulse Output
PLC operation when writing is excuted during RUN while instruction is
Decelerates and stops pulse output.
Immediately stops pulse output.
/FX /FX
3G 3U 3GC
refer to the Positioning Control Edition.
Item
When M8338 is set to ON, the PLC accelerates or decelerates
S
up to
1
corresponding to
executed
PLCs.
Outline of function
in the acceleration or deceleration time
D if S changes.
1 1