Carbolite 3216CC Indicator - Manual (Page 7)

Options
7 MC23-GB – v1.00
5 Digital Communications
5.1 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
5.2 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 5.1.
5.3 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.
To change the address value access the level 2 list. In level 2 press the scroll key
 until
the ADDR (ADDRESS) parameter is displayed. Use the Up
 
Down

to select the address
value.