Honeywell ControlEdge 900R04-0200 Getting Started page 50

Chapter 4 - Software
50
4. Click to add the serial module.
OK
5. Select a serial module. There are four serial ports to be configured,
RS232-1, RS232-2, RS485-1 and RS485-2. Select the target port
and configure appropriate values for the following parameters.
Parameter Description
Baud 300, 600, 1200, 2400, 4800, 9600, 19200, 38400,
Rate 57600, 115200
Parity None, ODD, EVEN
Data Bits 7, 8
If you select Modbus RTU Slave or Modbus RTU
Master for the Protocol Binding, the Data Bits is set
as 8 by default.
Stop Bits 1, 2
For RS232-1 and RS232-2, you should configure one more
option:
Flow Control
descriptions.
Parameter Description
Flow Control Only for RS232-1 and RS232-2
l
l
l
6. Under
Protocol Binding
drop-down list.
The following table provides information about various protocols
supported by serial ports.
Protocol Description
Modbus The controller acts as the Modbus Slave and used for
RTU communication between:
Slave
l
l
. See the following table for the parameter
None
RTS-CTS
RTS
, select a protocol from the
Controller and SCADA
Controller and third-party Modbus Master
devices
Port Protocol