- Emerson Remote Terminal Unit Instruction Manual

2-10 / Installation & Operation CI-ControlWave Express
SW2-5 set OFF forces the ControlWave Express to reinitialize SRAM when the unit
recovers from a low power or power outage condition. When set ON, the contents of SRAM
will be retained and utilized when the system restarts. Note: If the Battery is removed
from the CPU Module (CPU removed), the CPU should not be installed (and
power applied) before one minute has passed unless SW2-5 on the CPU has been
set OFF.
SW2-6 set ON will enable the user to perform a remote download of System Firmware on
units equipped with Boot PROM version 4.7 or higher and System PROM version 4.7 or
higher (see Section 2.4.2.3).
SW2-8 set OFF prevents the ‘Boot Project’ from running and places the unit into diagnostic
mode. SW2-8 must be set OFF to run the WINDIAG program resident on the local PC (see
Section 3.5). When SW2-8 has been set ON, diagnostics is disabled. SW2-8 must be set to
the ON position for normal system operation, i.e. for the Boot project to run. Note: If both
SW2-3 and SW2-8 are set OFF (closed), all communication ports will be set to 9600 bps
operation.
Table 2-5 in Section 2.3.3.3 provides CPU/System Controller Board Switch SW3 (COM3)
RS-485 communication port settings.
Table 2-2 - CPU/System Controller Bd. Switch SW1
Recovery Mode/Local Mode Control
SWITCH Function Setting
SW1-1/2 Recovery/Local Mode
Both ON or OFF = Recovery Mode
SW1 OFF & SW2 ON = Local Mode
SW1-3 Force Recovery Mode
ON = Force Recovery Mode (via CW Console)
OFF = Recovery Mode disabled
SW1-4 LED Status
ON = Enable All LEDs
OFF = Disable All LED except Watchdog (WD)
* = Note: Only the Switch SW1 settings listed in this table, have been tested.
Recovery Mode as supported by SW1-1 and SW1-2 or SW1-3 (forced by CW Console)
accommodates FLASH firmware upgrades to the CPU or allows the user to perform a
Core Updump, i.e., upload the contents of SRAM to a PC for evaluation.
2.3.3.2 Communication Ports
A ControlWave Express can be configured as a Master or Slave node on either a MODBUS
network or a BSAP network. A variety of communication schemes are available. Three
serial communication ports are contained on the standard CPU/System Controller Board.
These communication ports are designated as follows:
CPU/System Controller Board:
COM1 - Port 1: J4 (9-Pin Male D-Type Connector) RS-232 or J11 (3-Pin Male Connector)
Choice of active connector configured by jumper W18.
COM2 - Port 2: TB3 (8-Pin Term. Block) RS-232
COM3 - Port 3: TB4 (5-Pin Term. Block) RS232/RS-485 - RS-485 Configured by SW3
Communication Ports COM1, COM2 and COM3 support serial asynchronous operation as
listed above. Any communication port (COM1, COM2 or COM3) can be configured for local
communications, i.e., connected to a PC loaded with ControlWave Designer and OpenBSI
software.
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