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3.2.4 LD77MS common functions
Common functions
Parameter initialization function
Execution data backup function
External signal selection function
External I/O signal logic switching function
History monitor function
Amplifier-less operation function
Virtual servo amplifier function
Driver communication function
Mark detection function
Optional data monitor function
Module error collection function
Connect/disconnect function of SSCNET
communication
LD77MH initial value setting function
The outline of the functions executed as necessary is described below.
(Refer to "Section 2" for details on each function.)
This function returns the "parameters" stored in the buffer
memory/internal memory and flash ROM/internal memory
(nonvolatile) of Simple Motion module to the default values.
The following two methods can be used.
1) Method using sequence program
2) Method using GX Works2
This function stores the "setting data", currently being executed,
into the flash ROM/internal memory (nonvolatile).
1) Method using sequence program
2) Method using GX Works2
This function selects from the following signals when using the
upper/lower limit signal and the near-point dog signal.
• External input signal of servo amplifier
• External input signal via CPU (buffer memory of LD77MS)
This function switches I/O signal logic according to externally
connected devices.
This function enables the use of the system that does not use b
(N.C.)-contact signals, such as Upper/lower limit signal, by
setting parameters to positive logic.
This function monitors errors, warnings, and start history of all
axes.
This function executes the positioning control of Simple Motion
module without connecting to the servo amplifiers.
It is used to debug the program at the start-up of the device or
simulate the positioning operation.
This function executes the operation as the axis (virtual servo
amplifier axis) that operates only command (instruction) virtually
without servo amplifiers.
This function uses the "Master-slave operation function" of servo
amplifier. The Simple Motion module controls the master axis
and the slave axis is controlled by data communication between
servo amplifiers (driver communication) without Simple Motion
module.
This function is used to latch any data at the input timing of the
mark detection signal (DI1 to DI4).
This function is used to store the data selected by user up to 4
data per axis to buffer memory and monitor them.
This function collects errors occurred in the Simple Motion
module in the PLC CPU.
Holding the error contents in the PLC CPU, this function enables
to check the error history even after the PLC CPU in powered off
or reset.
Temporarily connect/disconnect of SSCNET communication is
executed during system's power supply ON.
This function is used to exchange the servo amplifiers or
SSCNET
This function is used to set the factory-set initial value of
LD77MH for the setting data set in the LD77MS buffer
memory/internal memory and flash ROM/internal memory
(nonvolatile).
Chapter 3 Specifications and Functions
Details
cables.
3 - 11
Reference
section
14.2
14.3
14.4
14.5
14.6
14.7
14.8
14.9
14.10
14.11
14.12
14.13
14.14
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