Wika CTM9100-150 Bedienungsanleitung PDF herunterladen (Seite 17)

100

17WIKA operating instructions, models CTD9100, CTB9100, CTM9100

11263911.02 05/2014 GB/D

4. Design and function / 5. Transport, packaging and storage

4.8 Data interface

The instruments are tted with an RS-485 communications

interface. Via this interface one can connect to a PC, level

converter or a network.

The software protocol used is a MODBUS-RTU protocol,

which is used in may monitoring programs available on the

market.

The transmission speed (baud rate) is factory set to 9,600

baud. Upon request, other data transmission rates are possi-

ble.

The 5-pin socket has two pins, A and B, that you connect to

the corresponding connections on the PC, level converter or

network.

The minimum requirements for operation with a USB convert-

er are:

■

IBM compatible PC

■

Installed operating system, Microsoft

Windows

98 SE,

ME, 2000, XP (Home or Prof.) or 7

■

A USB interface (USB 1.1 or USB 2.0)

A network connection enables the connection of up to 32

calibrators/micro-baths on the same network.

To connect to a network, some factory setting is required. For

this, please contact the supplier or WIKA directly.

For access to the programming via the

keypad while the serial interface is commu-

nicating, the message “buSy” appears on

the display, and therefore indicates that it is

in an “occupied” state.

4.9 Interface protocol

The interface protocol is available on request for delivery as a

specic additional document.

4.10 Protective earth monitoring

CAUTION!

The calibrator is tted with a protective earth

monitor to keep a check on the base isola-

tion of the heater. The monitoring unit works

independently of the the normal controls

and switches o the heating power supply

as soon as the calibrator no longer has a

connection to the protective earth system of

the isolation.

Once reconnected to the protective earth

system, the monitoring unit automatically

switches the power supply back on to the

heating circuit.

Plan view of the 5-pin panel socket

5. Transport, packaging and storage

5.1 Transport

Check the calibrator or the micro calibration bath for any

damage that may have been caused by transport.

Obvious damage must be reported immediately.

5.2 Packaging

Do not remove packaging until just before mounting.

Keep the packaging as it will provide optimum protection

during transport (e.g. change in installation site, sending for

repair).

5.3 Storage

Permissible conditions at the place of storage:

■

Storage temperature: -10 ... +60 °C

■

Humidity: 30 ... 95 % relative humidity (no condensation)

Avoid exposure to the following factors:

■

Direct sunlight or proximity to hot objects

■

Mechanical vibration, mechanical shock (putting it down

hard)

■

Soot, vapour, dust and corrosive gases

■

Potentially explosive environments, ammable atmos-

pheres

To connect to a PC, the RS-485 signal must be externally

converted to an RS-232 or USB signal. The appropriate

converter, including drivers, is available as an option. The

computer records all operational data and allows program-

ming of all calibrator conguration parameters.

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