West Control Solutions CALogix - Manual (Page 11)

Configuring CALogix
CALogix is configured using Windows-based CALogix-sw software. Before using CALogix–sw, connect CALogix to a PC
as shown below:
CALOGIX NETWORK
CALogix uses RS485 full duplex serial communications link which is the standard most commonly used for industrial
applications due to high noise immunity and multi-drop capability. It enables a PC to communicate with up to 31 CALogix
base-units over distances up to 1200 metres, and requires the addition of an RS485 interface card, or a separate RS232 /
485 converter connected to the RS232 port of the PC. RS485 converters that derive power from the RS232 port must have
all 9 pins (RS232) connected for full operation of the converter.
RS485 cards and converters can differ greatly in their requirements and therefore the installation instructions supplied with
the interface should be read carefully.
2m CALogix-PC cable (part number - CAB RJ45 2M 01) and a RS232/485 converter (part number 3C 25 000 K 3X) that
fits directly on to the RS232 serial port on a PC are available from your nearest CAL Controls distributor.
If wiring your own cable the RS485 connections are as follows.
As CALogix is designed for an industrial environment, CAL recommends using a 4 wire shielded RS485 cable such as
Belden 8132. Ensure that connectors are suitable for use with shielded cable and are correctly bonded.
Auto-baud rate function.
On power up CALogix detects the network speed and automatically adjusts its baud rate
accordingly. If the network baud rate is later modified, remove the power and reapply so that CALogix can resynchronise to
the new baud rate.
MULTIPLE CALOGIX NETWORKS
Each CALogix unit has an RS485-in and RS485-out RJ45 socket. To connect a number of CALogix units on a network,
wire as shown below. The cables should be wired so that the corresponding pins of RS485-out are connected to the same
pin number on RS485-in of the next controller i.e. Pin 2 (out) to Pin 2 (in), Pin 3 (out) to Pin 3(in), Pin 5(out) to Pin 5(in),
Pin 6(out) to Pin 6(in) and Pin 7(out) to Pin 7(in).
RS232/485 converter
<15m <1200m
To other
CALogix
controllers
RS485 from PC
RJ45 PIN
2
RX+
3 RX-
4 / 5 GND
6 TX-
7 TX+
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