14 - 8
Chapter 14 Common Functions
(2) When "2: Buffer memory of QD77GF" is set, use the following control data to
operate the external input signal (upper/lower limit signal, proximity dog signal
and stop signal).
Setting item
Setting
value
Setting details
Buffer memory
address
[Cd.44]
External input
signal operation
device
Set the status of the upper/lower limit signal,
the proximity dog signal and the stop signal.
5928
to
5931
: Refer to Section 5.7 "List of control data" for details on the setting details.
[2] Precautions during parameter setting
(1) When the value which cannot be used is set, the error "External input signal
selection error" (error code: 936) occurs at turning the PLC READY signal
[Y0] ON, and the READY signal [X0] is not turned ON.
(2) When "1:External input signal of servo amplifier" is set, use a servo amplifier
which enables input of the external input signal.
(3) When "2: Buffer memory of QD77GF" is set, operation is affected by the PLC
scan time.
(4) When using MR-J4-GF, the servo parameter "Function selection D-4 (PD41)"
is required to be set as shown in the following table. [CiA402 mode]
Refer to Section 13.4.4 "Hardware stroke limit function".
[Pr.80] External input signal selection
Setting of servo parameter "Function
selection D-4 (PD41)"
1: External input signal of servo
amplifier
01_ _H
2: Buffer memory of QD77GF 11_ _H
[3] Control details
The following table shows the external signal that becomes valid by setting
"[Pr.80] External input signal selection".
"[Pr.80] External input signal selection" External signal that becomes valid
External input signal of servo amplifier
(Setting value: 1)
Upper/lower stroke limit signal : External input signal of servo amplifier
(LSP, LSN)
Proximity dog signal : External input signal of servo amplifier
(DOG)
Stop signal : Buffer memory of QD77GF (STOP)
External command/switching signal: External input signal of QD77GF (DI)
Buffer memory of QD77GF
(Setting value: 2)
Upper/lower stroke limit signal : Buffer memory of QD77GF (FLS, RLS)
Proximity dog signal : Buffer memory of QD77GF (DOG)
Stop signal : Buffer memory of QD77GF (STOP)
External command/switching signal: External input signal of QD77GF (DI)
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