MRF 16/22
38
MF 55-GB 1.21
11 Digital communication
An RS232 communication port is fitted as standard and is connected to the 3508 main
controller only.
[See figure 4.1 for location]
. 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 9-pin at both the
furnace and computer. The computer must have appropriate communication software
installed such as Eurotherm’s ‘i-Tools’, which is available from Carbolite.
11.1 RS232 communication addressing:
Modbus Address (Main) =
2
Baud
Rate
=
9600
Byte
Format
=
8
11.2 RS232 communication cables
Connecting the furnace to a computer is done via a “straight” cable as follows:
Furnace end of cable
RS232 cable: furnace to PC
Computer end of cable
female 9-pin
9-pin male
Rx HF
2
Tx
Tx HE
3
Rx
Com HD
5 Com
7,8 Link
together
1,4,6 Link
together
Figure 11.1 RS232 cable connections
