Specifications

7 – Configuring Controllers
102 R400
Configure the port for the channel as if the Stallion EasyConnection port were a
standard Windows serial port.
Example To use the port configured as “COM8”, you would enter the following settings
under the Port tab for your channel:
Set the other communication parameters such as Baud Rate to the appropriate
values for your device.
Setting Flow Control
Because of limitations on how quickly they can process serial data, some
computers and other devices implement flow control strategies to ensure that
data is neither received nor transmitted at a rate faster than the device can
process. Flow control is also used by industrial devices to interface with modems
or half-duplex radio systems. Flow control strategies are also known as
“handshaking”.
For controllers, flow control is usually only required when communicating
through a half-duplex radio link or a modem connected to the device. Flow
control is necessary for half-duplex radio systems to ensure that the radio link is
“keyed” to receive or transmit data in the correct direction. Note that cabling
requirements for devices that use flow control and those that do not are different.
See “Cabling for Stallion EasyConnection” on page 104
.
With the Stallion EasyConnection Serial Adapter different ports can be configured
to use different flow control strategies. Before using the Stallion EasyConnection
Serial Adapter, find out what flow control strategies are used by your devices,
including any intervening modems or half-duplex radio systems.
Port Type Serial
Serial Port Name COM8
plscpcg.book Page 102 Monday, May 28, 2001 10:11 AM