Mitsubishi FR-A800

BCN-C22005-696
• Pulses are cleared according to the following conditions.
 The droop pulses are not cleared.
NOTE
• The monitor value of the current position 2 is not cleared when the first and the second motors are switched each
other.
• For the details of the pulse monitor selection, refer to page 246 of the Instruction Manual (Detailed).
• For the details of the PLC function special register, refer to page 22 of the PLC Function Programming Manual.
6 Cumulative pulse monitor
Monitor selection
• The cumulative pulse monitor is available when "71 to 74" is set in the monitor selection parameters (Pr.52,
Pr.774, Pr.775, Pr.776, and Pr.992).
 Negative values are not displayed on the operation panel. The values "-1 to -32767" are displayed as "65535 to 32769" on the
operation panel.
Clearance condition
Position command / current position /
droop pulse
Current position 2
Pr.419=0 Pr.419=2 Pr.419=0 Pr.419=2
Servo-OFF (output shutoff) Cleared Not cleared
Clear signal input Cleared Cleared
Home position return completed Cleared
 - Not cleared -
• When the plug-in option (FR-A8AP) or the control terminal option (FR-A8TP) is used, the accumulated value
of the encoder pulses can be monitored.
Pr. Name
Initial
value
Setting
range
Description
635
M610
Cumulative pulse clear
signal selection
0 0 to 3 Select the clearance method for the cumulative pulse monitor.
636
M611
Cumulative pulse
division scaling factor
1 1 to 16384
Set the division scaling factor on the cumulative pulse for the
plug-in option (FR-A8AP).
637
M612
Control terminal option—
Cumulative pulse
division scaling factor
1 1 to 16384
Set the division scaling factor on the cumulative pulse for the
control terminal option (FR-A8TP).
638
M613
Cumulative pulse
storage
0 0 to 3
Select the processing method for the cumulative pulse monitor
value when the power is turned OFF or the inverter is reset.
Types of Monitor Unit
Pr.52, Pr.774
to Pr.776,
Pr.992
RS-485
communication
dedicated
monitor
(hexadecimal)
Modbus-RTU
real time
monitor
Display with
minus sign
Description
Cumulative pulse — 71 H47 40271 
The cumulative number of pulses is
displayed (monitor range: -32767 to
32767) (for FR-A8AP).
Cumulative pulse
carrying-over times
— 72 H48 40272 
The number of the cumulative pulse
carrying-over times is displayed (for FR-
A8AP).
Cumulative pulse (control
terminal option)
— 73 H49 40273 

The cumulative number of pulses is
displayed (monitor range: -32767 to
32767) (for FR-A8TP).
Cumulative pulse
carrying-over times
(control terminal option)
— 74 H4A 40274 

The number of the cumulative pulse
carrying-over times is displayed (for FR-
A8TP).