D20Me/Me Ii Factory Fitted Software; D20Me: Serial I/O Architecture; Serial Performance; Enhanced Feature: 68K Monitor Speed Change - GE D20 Installation And Operation Manual

GE Energy
Familiarization
, continued
D20ME/ME II The D20ME/ME II has Base software, which resides on the BootROM installed at
Factory Fitted the factory.
Software
Each D20ME/ME II board undergoes factory testing. The level of testing depends on
the type of system you have ordered. See "D20/D200 Software Configuration" page
99.
D20ME: •
Supports eight serial channels, and utilizes a serial I/O (SIO) chip (called the
Serial I/O
"Octart")
Architecture
•
Serial channels are routed to the DB-9 connectors on the back of the chassis
•
One channel (COM0) from the rear panel is also routed to the WESMAINT
DB-9 connector on the face plate of the processor card.
Note:
Serial The following table gives the serial communication performance of the D20ME. The
information below is provided only as a guideline for comparison.
Performance
Note 1: The aggregate limits of the modules are dependent on the quantity and
Note 2: The actual communication speed of any port is defined by and limited to
Aggregate serial communications
limit of module, half-duplex
Enhanced Using the Monitor's BAUD command, the communication speed of the WESMAINT
Feature: port can be changed to a higher or lower rate. The most common reasons for
68K Monitor increasing the WESMAINT port speed are to reduce the time required to:
Speed Change
•
Download application code file to the flash memory, and to
•
Carry out a configuration download.
Refer to "Appendix B: Changing the Baud Rate", page 127 for more information.
General
Full
Use only a standard PROMAINT cable (GE Energy part number 977-
0048) when you are connecting to the D20ME or ME II's front-panel
WESMAINT connector. Use of any other cable may cause serious damage.
processing load of other applications running in the modules.
speeds that individual applications support. Some applications and base
systems may not support baud rates higher than 9600.
Parameter
Installation and Operations Guide
D20ME/ME II Limit
7 ports at 38.4 kbps, plus WESMAINT
994-0078-2.00-7
D20/D200
25