Watlow MICRODIN - Manual (Page 8)

8
Watlow MicroDIN Quick Start Guide
Serial Data Format
Configure your computer’s COM1 or COM2 (communications) port data format to
match the MicroDIN’s settings in the table below.
MicroDIN Installation Wiring Tasks
MicroDIN requires these wiring tasks for a successful installation
1. Wire MicroDIN sensor input.
2. Wire MicroDIN Output 1, the control output.
3. Wire MicroDIN Output 2, the alarm output.
4. Wire MicroDIN power.
5. Connect the MicroDIN communications daisy chain.
6. Wire the 232-to-485 converter; connect to the computer.
7. If necessary, wire the termination and pull-up/pull-down resistors.
Communications Software
WATVIEW TM
Watlow offers a
Modbus
™ package
in WATVIEW ™ ,
software that will
set up and run
multiple
MicroDINs over
an EIA-485
network.
WATVIEW
™ is
available from
any Watlow sales
representative or
authorized dis-
tributor. For more
information, go to
www.watlow.com
/products/software. WATVIEW
™ can handle up to 32 MicroDIN units.
Other Software
To communicate with MicroDIN, you must use a Modbus ™ RTU (remote terminal
unit) compatible software package. Sending ASCII commands via a standard
serial communication application will not work. Refer to the Appendix in the
User's Manual if you’re writing your own Modbus
™ RTU application.
Table 8a -
Serial Data Format
Data Bits Parity Stop Bit Start Bit
8 None 1 1
Figure 8b -
WATVIEW
™ sample soft-
ware screen