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Sigma II User's Manual
5.5.8
Using the Near Output Signal
The basic use and wiring procedures for the near (/NEAR) output signal (photocou-
pler output signal) are described below. The signal is a sequence signal that is gener-
ally output together with the positioning completed signal (/COIN), and it is used to
indicate the servomotor is close to completing operation.
/NEAR signals: Near output signals
Photocoupler output levels
per output node:
• Maximum operating
voltage: 30V
• Maximum output cur-
rent: 50mA
Note: *CN1-o terminals are allocated using parameter Pn510.0.
Output ð /NEAR
The host controller can use the /NEAR signal to prepare the next motion sequence
before receiving the positioning completed signal. This reduces the time required to
complete the desired motion profile.
/NEAR
State
ON
Closed or low level.
OFF
Open or high level.
To use the /NEAR signal, an output terminal must be allocated with the parameter
below.
Parameter
Pn510
Output Signal Selections 3
Pn510.0 is used to allocate the /NEAR output signals above.
Pn510.0
State
0
1
2
3
Note: Multiple signals allocated to the same output circuit are output using OR logic. Set other output sig-
nals to a value other than that allocated to the /NEAR signal in order to use the /NEAR output signal
Servo amplifier
DC
DC
Near Output Signal
Status
Signal
Output Terminal (CN1–)
*1
—
25
27
29
Chapter 5: Parameter Settings and Functions
CN1-o* /NEAR+
CN1-o* /NEAR-
Position Control
Result
The servomotor has nearly completed operation.
(Position error is below the near signal setting range.)
The servomotor is not close to completing operation.
(Position error is above the near signal setting range.)
Setting
Default Setting: 0000
5-79
I/O power supply
+24V
0V
Description
Position Control
*2
—
26
28
30
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