POINT

Monitoring servo amplifier

Carefully read the manual of servo amplifier to be connected and fully understand the operating procedures before monitoring.

Before operation, check the parameter settings. Improper settings may cause some machines to perform unexpected operation.

The parameter settings must not be changed excessively. Operation will be insatiable.

(1)Parameters with * in front of it's abbreviated name For the parameter with * in front of it's abbreviated name, powering off the servo amplifier after setting then on makes the parameter valid.

(2)Data length for setting virtual devices for servo amplifier

Set the following data length for setting devices.

•PRM, ST, AL, PA, PB, PC, PD, POS, SPD, ACT,

DCT, DWL, AUX

: 16bits or 32bits (depends on the data of servo amplifier)

•DI, DO, TMI, TMO, TMD: 32bits

If the above data length was not set, data would not be set to the servo amplifier correctly or the GOT can not monitor normally.

(a)Monitoring

•When the 16-bit data is handled as 32-bit data, the upper 16bits are displayed as 0.

•When the 32-bit data is handled as 16-bit data, the lower 16bits only are displayed as 0.

(b)Writing

The GOT writes within the range of data length set. Note that the servo amplifier responds correctly while the written data is invalid in the servo amplifier side when the written data is outside the range of values which can be set by the servo amplifier.

(3)Memory area for writing parameters Parameters are written to RAM or E2PROM of servo amplifier.

(a)When written to RAM

Remember that written parameters are cleared when power supply to the servo amplifier is turned off.

(b)When written to E2PROM

Written parameters are not cleared even when power supply to the servo amplifier is turned off.However, there are limits in the number of writing to E2PROM.

If the data is frequently updated (more than once in an hour), write the parameters to the RAM.

For details, refer to the manual of the servo amplifier used.

(2) MELSERVO-J2M-P8A

 

 

 

 

 

Device

 

Device name*2

Setting range available

No.

 

represent

 

 

 

 

 

 

 

 

 

 

ation

device

Servo amplifier request

SP1

to

SP2

 

(SP)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit

Operation mode selection

OM0

to

OM4

 

(OM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic parameter

PRM0

to

PRM29

 

 

Expansion parameter

 

 

PRM1000

to

PRM1029

 

 

(PRM)*1

 

 

 

 

 

 

 

Status display (ST)

ST0

to

ST2

 

 

 

 

 

 

Decimal

 

 

AL0

 

 

 

 

 

 

 

device

 

AL11

to

AL13

 

Alarm (AL)

AL200

to

AL205

 

 

 

Word

 

AL210

to

AL215

 

 

AL230

to

AL235

 

 

 

 

 

 

 

 

 

 

 

External input (DI)*3

DI0

to

DI2

 

 

External output (DO)

DO0

to

DO1

 

 

 

 

 

 

 

 

Forced output of signal pin

 

 

 

 

 

(for test operation)

TMO0

 

 

 

 

(TMO)

 

 

 

 

 

 

 

 

 

*1 Use PRM0 to PRM29 when writing parameters to the servo

 

amplifier RAM.

 

 

 

 

 

PRM1000 to PRM1029 are used when writing parameters to

 

E2PROM of the servo amplifier.

 

 

 

*2 The GOT cannot read or write data from/to consecutive

 

devices.

 

 

 

 

 

*3 Only reading is possible.

 

 

 

POINT

Precautions for SP, OM, and TMO devices

(1)For bit devices

Only writing is possible.

[Alternate] of a bit switch cannot be used. Use [Set], [Reset], and [Momentary] of a bit switch.

(2)For word devices

Only writing is possible. Numerical input cannot be used.

When writing, use [Word Set] of a data set switch.

16 - 18

16. SERVO AMPLIFIER CONNECTION

 

16.6 Device Range that Can Be Set