Mitsubishi FX1N Series Programming Manual

FX Series Programmable Controlers Applied Instructions 5
5-94
means once the current value of D equals that of S2, the RAMP instruction will ‘freeze’ in
this state. This means the M8029 will be set ON for as long as the instruction remains
energized and the value of D will not reset until the instruction is re-initialized, i.e. the RAMP
instruction is turned from OFF to ON again.
b) Users of FX
1N and FX1S PLC’s cannot change the operating mode of the RAMP instruction.
For these PLC’s the mode is fixed as in the same case as FX PLC’s when M8026 has been
set ON, i.e. HOLD mode.
c) If the RAMP instruction is interrupted before completion, then the current position within the
ramp is ‘frozen’ until the drive signal is re-established. Once the RAMP instruction is re-
driven registers D and D+1 reset and the cycle starts from its beginning again.
d) If the RAMP instruction is operated with a constant scan mode, i.e. D8039 is written to with
the desired scan time (slightly longer than the current scan time) and M8039 is set ON. This
would then allow the number of scans n (used to create the ramp between S1and S2) to be
associated to a time. If 1 scan is equal to the contents of D8039 then the time to complete
the ramp is equal to n × D8039.
The RAMP instruction may also be used with special M flags M8193 and M8194 to mimic the
operation of the SER (FNC 61) and RS (FNC 80) respectively when being programmed on
older versions of programming peripherals. See page 1-5 for more details.

Mitsubishi FX1N Series Specifications

General

Programming Language	Ladder Logic
Output Type	Relay, Transistor
Operating Temperature	0 to 55°C
Power Supply	100-240V AC or 24V DC
Program Capacity	8K steps
Communication Ports	RS-422
Data Memory	8000 words
High-speed Counters	Up to 6 channels
Expansion Modules	Available
Pulse Output	2 points