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Configuring Instrument Comms Settings

This should also be done immediately after power-up, and
is only possible from the instrument front panel.

On power-up the controller will display the self test
sequence followed by Alternating  

INPT   

and 

nonE

Note: 

During the following procedure the display will revert

to alternating  

INPT   

and 

nonE 

after 60 seconds of

keying inactivity, but will retain any settings already
completed. Should this occur, or in the event of becoming
‘lost’ in the program, please start again from the alternating     

INPT   

and 

nonE 

display.

To select Level C (communications settings) 
Press 

▼ 

once 

display alternates  

LEVL   

and 

5

Press and hold 

✱ 

and press 

▼ 

five times to reach 

level C

display alternates  

LEVL   

and 

C

Note: Level C is only visible when the comms interface
board is fitted to the unit

To set instrument comms address
Press 

▲ 

once 

display alternates  

ADDR   

and 

0

Press and hold 

✱ 

and press 

▲ 

to index to chosen address

number  

(1 to 247)

Note: 

In the absence of any conflicting information the

following comms settings should be left as the default values
(see details on page 7).

To read or adjust comms settings
Baud rate
Press 

▲ 

once 

display alternates  

BAUD   

and 

9600

(Default setting)
Press and hold 

✱ 

and use

▲ 

or 

▼ 

keys to select preferred

value.

Data format
Press 

▲ 

once 

display alternates  

DATA   

and 

18n1

(Default setting)
Press and hold 

✱ 

and use

▲ 

or 

▼ 

keys to select preferred

setting. (see table page 7).

Debug setting
Press 

▲ 

once 

display alternates  

DBUG   

and 

oFF

(Default setting)
Press and hold 

✱ 

and use

▲ 

key to select 

on

To enter settings into memory
Press and hold 

▲ 

and 

for 3 seconds display alternates  

INPT   

and 

nonE

To check settings; 

repeat the above procedure

The unit is now ready to be configured from the PC.

Note:

Where more than one instrument is connected to the

system, it is useful at this point to list them by location, title
and comms address. The list can then be used as a
reference to ensure that the instruments are given the same
identity when configuring the comms link from the PC.

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8

Summary of Contents for CALCOMMS 3300

Page 1: ...Application Guide for Installation and Cabling of the Communications Option for CAL 3300 9300 9400 9500 Controllers 8th November 1999 Ver 1 10 Doc 33010 Iss 005...

Page 2: ...9501 available from most leading distributors and stocked by CAL 2 FITTING A COMMUNICATIONS INTERFACE BOARD The RS232 and RS485 interface boards are interchangeable and are fitted in exactly the same...

Page 3: ...ent At the same time ensure the hole in the Comms board fits over the screw thread Screw the Brass Half Nut onto the Comms board Do not overtighten but ensure it s tight enough to stop the board from...

Page 4: ...to PC s and is designed for serial communications with single instrument up to distances of 15 metres in a low electrical noise environment Connection is via a screened two core cable where the volta...

Page 5: ...low receivers to receive invalid data bits due to electrical noise on the cable To prevent this the lines should be forced into a known state by fitting two 620 ohm bias resistors to one point node If...

Page 6: ...r supply to be fitted this provides the extra power for the biasing resistors and also the power to drive all 128 controllers over 1200 meters EXTERNAL POWER SUPPLY The recommended external power supp...

Page 7: ...19200 NOTE If a comms board has been retro fitted the default baud rate is 1200 Data Sets the transmission format and must match the PC settings Data Format Table Settings Start bits Data bits Parity...

Page 8: ...press to index to chosen address number 1 to 247 Note In the absence of any conflicting information the following comms settings should be left as the default values see details on page 7 To read or a...

Page 9: ...the bus a recommended minimum PC specification would be a Pentium 200MHz processor with 64Mb of RAM To keep CPU and RAM usage to a minimum it is generally good practice not to log data more frequently...

Page 10: ...hin Herts SG5 1RT UK Tel 44 0 1462 436161 Fax 44 0 1462 451801 email support cal controls co uk http www cal controls com CAL Controls Inc 1580 S Milwaukee Avenue Libertyville IL 60048 USA Tel 847 680...

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