Pepper Computer Modular Computers RS485 - Manual (Page 292)

SMART I/O User’s Manual
March 12, 1996 ©1996 PEP Modular Computers GmbH Page 6 - 10
Chapter 6 Communications Modules
6.1.8 ISaGRAF Programming
6.1.8.1 The ISaGRAF Board Parameters
Information on board parameters may be found in the PEP online help and
ISaGRAF online help or user’s manual.
Figure 6.1.8.1.1 Typical Screen Sections for the SM-RS232 Module
Logical Address
This particular module is accessed over an OS-9 device descriptor and driver
which are already present in EPROM on the SMART-BASE. Because the
SM-RS232 module can only occupy the first slot on the SMART-BASE, the
descriptor is able to access the module directly without the need of a manu-
ally entered logical address.
Module Specific Information
dev_file_name
: This must be set to scc3
dev_mod_name
: This must be set to scc3
hw_handshake
: A hardware handshaking flag that is not supported
for SMART I/O applications
echo
: A boolean flag allowing incoming characters to be
echoed to the screen.