CALogix
installation
sheet
Page
5
of
6
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).
For multiple instrument networks each transmission line must be properly terminated to prevent
reflections. 120
Ω
termination resistors should be fitted between TX+ & TX- and RX+ & RX- at the
connection to the PC in addition to the last instrument in the chain. See example below.
When transmission lines are not transmitting, they remain in an intermediate state which can allow
receivers to receive invalid data bits due to electrical noise on the cable. To prevent this bias resistors
may be required to force the lines into a known state. Some RS485 interface cards and converters
may have bias resistors fitted please check manufacturer’s specification and recommendations for use
of bias resistors.
Note:
The default Modbus address for each base-unit is 1, for a network with a number of CALogix
units, power-up each unit individually and configure them with a unique Modbus address using
CALogix-sw configuration tool. (See section on base-unit set-up in programming manual on cd)
CALOGIX-SW MINIMUM PC SYSTEM REQUIREMENTS
As a general requirement, we would recommend a minimum of Pentium 450MHz with 256MB RAM,
Windows
TM
2000/XP and screen resolution, 1024 x 768.
INSTALLING CALOGIX-SW
1.
Insert CALogix-sw disk into CD-drive.
2.
CALogix-sw install program should auto-run. If this does not happen, manually run
‘setup.exe’ on CALogix-sw cd.
3.
Follow on screen instructions to complete installation.
RUNNING CALOGIX-SW
1.
Click ‘start’ on Windows toolbar.
2.
Mouse-over ‘all programs’.
3.
Mouse-over ‘CALogix folder’ in menu.
4.
Click on ‘CALogix’ icon.
5.
CALogix program should now run.
USING CALOGIX-SW
1.
Refer to on-screen help or CALogix programming manual contained on CALogix-sw CD.
DIAGNOSTICS
Each control module has LEDs to indicate when each of the outputs are on
(or relay closed). If an analogue output option is fitted the LED dims
proportionately with the output level, e.g. a PID module with a 4-20mA output,
the LED will be dim at 4mA and bright at 20mA.
Note
: The output and the LED indicator are physically linked and always
represent the true state
of the output.
CALogix base-unit has three status LED’s to assist with diagnosing problems
RJ45 PIN
2
RX+
3
RX-
4 / 5
GND
6
TX-
7
TX+
LED 1 – Communications
Off
No
communications
On/Pulsing
Communications active
LED 2 – CALogix healthy (Heartbeat)
Slow pulse
Unit operating correctly
Fast Pulse
Base-unit emergency (comms still running)
On
Base-unit
lock-up
When base-unit emergency/lock-up conditions exist recycle power to clear. If the
problem is not clear on power recycle contact CAL controls for technical support.
LED 3 – Logic
Off
Logic not active
On
Logic
active
To start logic program running refer to section on
running logic programs
