Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Uživatelský manuál Strana 110

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Chapter 7
"#!!#"
7-2
Prior to Series A Revision E (1.30) of the firmware, all the COMM ports
on the control coprocessor and serial expander were initialized at the
factory for connection to a programming terminal. These initial settings
would process control-character sequences, pause characters, and program
abort sequences. If you have a firmware release earlier than Series A
Revision E (1.30) and you want to connect a COMM port to a device other
than a terminal, you must reconfigure the port.
The 9-pin serial port COMM 0, used for configuring the coprocessor,
retains the factory settings for connection to a programming terminal.
In Series A Revision E (1.30) of the firmware and later, however,
COMM1, COMM2, and COMM3 have all serial-port settings prepared
for raw binary data transfers. For example, the XON and XOFF settings
are set to 0xFF in order to turn of software and hardware handshaking;
this setting allows for proper RS-485 communication.
The exact changes made to the serial port settings are listed in the
following table.
Settings Prior to Series A
Revision E (1.30)
Settings in Series A
Revision E (1.30) and Later
$ $
" "
" "
 
 
$ $
$" $"
 
" "
 
! !
 
!!# !!#
$ $
" "
!# !#
$# $#
" "
 
#& #&
$ $
% %
% %
# #
#" #"
Setting Up Communication
Parameters
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