Mitsubishi Electronics fx3u

/FX

3UC

PLC User's Manual - Positioning Control Edition

Built-in Positioning Functions

4 Before Programming

4.1 List of Related Devices

B - 38

4. Before Programming

This chapter describes several items that should be known before programming. They are:

• Operation of related devices, such as output pulse frequency, operation command flag, current value, and

operation monitor flag.

• Items to be set on the PLC side

• Items to be set on the servo amplifier (drive unit) side

• Items to be observed in programming

4.1 List of Related Devices

→ For details on related devices, refer to Section 4.2 to Section 4.4.

4.1.1 Special Auxiliary Relays

The following table shows the related special auxiliary relays. Note that Y000, Y001, Y002, and Y003 are

devices that determine the pulse output destinations.

→ For details on the PLSY (FNC 57), PWM (FNC 58), and PLSR (FNC 59) instructions, refer to the

programming manual.

Device number Function Attribute Corresponding

instructions Refer to

Y000 Y001 Y002*6 Y003*1

M8029 "Instruction execution complete"

flag Read only

PLSY,PLSR,DSZR,

DVIT,ZRN,PLSV,

DRVI,DRVA

and so on.

Subsection

4.4.2

M8329 "Instruction execution abnormal

end" flag Read only

PLSY,PLSR,DSZR,

DVIT,ZRN,PLSV,

DRVI,DRVA

Subsection

4.4.2

M8338*2 Acceleration/deceleration

Operation*3 Drivable PLSV

Subsection

4.3.9

M8336*4 Interrupt input specification function

enable*3 Drivable DVIT

Subsection

4.3.7

M8340 M8350 M8360 M8370 "Pulse output monitor" flag

(BUSY/READY) Read only

PLSY,PLSR,DSZR,

DVIT,ZRN,PLSV,

DRVI,DRVA

Subsection

4.4.3

M8341 M8351 M8361 M8371 CLEAR signal output function

enable*3 Drivable DSZR,ZRN

Subsection

4.3.4

M8342 M8352 M8362 M8372 Zero return direction specification*3 Drivable DSZR

Subsection

4.3.3

M8343 M8353 M8363 M8373 Forward limit Drivable PLSY,PLSR,DSZR,

DVIT,ZRN,PLSV,

DRVI,DRVA

Subsection

4.3.1

M8344 M8354 M8364 M8374 Reverse limit Drivable

Subsection

4.3.1

M8345 M8355 M8365 M8375 DOG signal logic reverse*3 Drivable DSZR

Subsection

4.3.5

M8346 M8356 M8366 M8376 Zero point signal logic reverse*3 Drivable DSZR

Subsection

4.3.6

*1. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are connected to the

FX3U PLC.

*2. Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.

*3. Cleared when PLC switches from RUN to STOP.

*4. Only available for FX3U/FX3UC PLC Ver. 1.30 or later.

*5. For the user interrupt input command, the logical NOT function will not be activated.

*6. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is connected.

*7. Only available for FX3U and FX3UC PLC Ver.2.20 or later.