Athena C10 line Manual de Instruções descarregar pdf (Página 17)

5.6 Assignment of the parameters and E

PROM

All the parameters modified from keyboard or assigned through serial

communication, come written in a permanent way in the EEPROM of the

instruments. Like known good, these components have limited writing

cycles beyond to which the component could be damaged. In our case

the number of cycles of writing are about 10.000 and also if this number

could appear limited, we must be held present that the writings during the

arc of life of the instrument don't arrive to overcome the thousand of

cycles. Different thing is when we talk about the serial communication. In

fact the computer could assign any parameter and with any frequency to

the regulators.

Being well aware of this fact, Athena Controls has provided to protect the

component in matter according to different hardware formality and

resources of the instruments. One of the protection made consists of the

fact to compare the new given with the datum already resident. If the two

data correspond, no writing doesn't happen in as not necessary and the

new given comes writing only and entirely if the two data disagree

between them.

Normally the datum that has a frequency of better writing it is the value of

Setpoint. In the instruments C10, M10 and M300 in as not furnished of

NOVRAM or buffered RAM, exists two formality of assignment of the

Setpoint that is:

1) Assignment to the Jbus address 2

2) Assignment to the Jbus address 5

With the first formality, the Setpoint could be assigned endless times

because it work in the RAM of the microprocessor but attention because

at the turning off of the regulator this datum comes lost for engage the

last value that had stayed written locally from keyboard or from the serial

to the Jbus address 5.

With the second formality the datum comes written in a permanent way

directly in the EEPROM of the instrument and the writing must be limited

to a real necessity.

The instruments of the series M5000, X100, X400, X5000 and X7000

possessing a different hardware structure, furnished that is of NOVRAM

or buffered RAM, they are not subdued to the limits previously exposed

and the assignments of the Setpoint to the Jbus addresses 2 or 5 don't

involve any difference. The two addresses come maintained active only

for a problem of compatibility with the preceding series.

6. Electrical Connections

6.1 General Description

All the Platinum® controllers may be fitted with a two wire (half duplex)

RS485 serial comm.s option. It makes the wiring simpler and enables a

larger connection length (maximum 1200 m).

The Platinum ® C10, M10, M300 and M400 instruments do not have any

line termination or polarisation system. If necessary a termination

resistance (120Ω ¼ W) must be connected to the terminals of the last

instrument of the line. In any case the polarisation is not possible.

The Platinum ® M5000, X100, X400 and X5000 instruments do have any

line termination or polarisation system. Please refere to the specific

chapter on these instruments.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 106 107

Comentários a estes Manuais

Sem comentários

Athena C10 line Manual de Instruções Página 17

Comentários a estes Manuais

Manuais e produtos relacionados com não Athena C10 line