Carbolite 3216P1/P5 - Manual (Page 15)

Options
15 MC18-GB – v1.04
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 controller it is
necessary to go into configuration modes and enter a security codes. Please consult
Carbolite.
6.1 Digital Communications
– RS232
If the RS232 option is supplied, then the furnace 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 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
Rx 3 (2) 3 (2) Tx
Tx 2 (3) 2 (3) Rx
Com 5 (7) 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 sub-miniature 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) 3 (2)

+ 2 (3) 2 (3) +
Com 5 (7) 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.