5.0 3216CC Controller
5.8.2
Digital Communications - RS485
If an RS485 option is supplied, the furnace is fitted with two D-sockets. Connection
between products is by “straight” cable as follows:
Product end of cable
female (25-pin) 9-pin
RS485 Cable:
product to PC
Computer end of cable
9-pin (25-pin) female
-
(2)
3
3
(2)
Tx
+
(3)
2
2
(3)
Rx
Com
(7)
5
_________________
5
(7)
Com
5.8.3
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 page key until the COMMS
parameter is displayed. Press up
down
to select the address value.
5.8.4
Alarm Option
When an alarm board is fitted, which consists of a relay with voltage free contacts, for
operator use, the contacts are taken to a panel plug on the control panel, wired as
indicated:
Key
C
Temperature Controller
F
Fuse (2A)
S
Supply
L
Load
*
Normally open relay
contacts
RO
Relay Output 240V 2A
MAX
The purpose of the 2 amp fuse is to break the circuit to prevent overloading on the
circuit due to high voltage.
The instrument configuration and parameters available to the operator depend on the
customer requirements.
Before handling the controller: wear an anti-static wrist strap or
otherwise avoid any possibility of damage to the unit by static electricity.
Refer to the detailed instructions supplied with the replacement
controller.
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