Carbolite 3508 User Manual download pdf (Page 17)

Basic Operation

17 MC19-1.20

6 Options

Because options can be ordered in a variety of combinations and for a variety of purposes,

exact instructions are not given here. The full Eurotherm manual may be required to

determine customer parameter settings. To reveal or hide parameters in the controllers it is

necessary to go into configuration modes, a security code is needed. Please consult

Carbolite.

6.1 Digital Communications – RS232

If the RS232 option is supplied, then the furnace or oven is fitted with one subminiature D-

socket connected to the controller communications (comms) module. RS232 is suitable for

direct connection to a personal computer (PC), using a “straight through” cable as follows

(the linked pins at the computer end are recommended but may not be necessary). The

cable is usually 9-pin at the furnace or oven end and 9-pin at the computer, but other

alternatives are shown in parentheses.

Furnace end of cable

RS232 Cable: furnace to PC

Computer end of cable

female 9-pin (25-pin)

9-pin (25-pin) male

3 (2)

2 (3)

Com

5 (7)

Com

7,8 (4,5)

Link

together

1,4,6 (6,8,20)

Link

together

6.2 Digital Communications – RS485

If an RS485 option is supplied, then the furnace is fitted with two D-sockets. Connection

between products is by “straight” cable as follows:

RS485 cable: furnace to

furnace

female 9-pin (25-

pin)

9-pin (25-pin) female



3 (2)



2 (3)

5 (7)

Com

If a boxed KD485 RS485 to RS232 converter is supplied, then the connection cable from

furnace to KD485 should be a “straight” cable, the same as the furnace-to-furnace cable.

The connection between the KD485 and the PC should be a “crossover” cable, the same as

the Furnace to PC cable in section 6.1.

6.3 Comms Address

Typically the comms address is set to 1, but this can be changed. In the case of RS485 and

multiple instruments it is necessary to set different addresses.

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Carbolite 3508 User Manual Page 17

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