- Emerson Remote Terminal Unit Instruction Manual

C-4 / Appendix C - Hardware Installation Guide CI-ControlWave Express
Step 1. Hardware Configuration (Continued)
2. Remove the Process I/O Board and the CPU/System Controller Board (as one assembly).
Table C-1 - 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 Idle LED Status Indication
OFF = Disable Idle LED Status Indication
* = Note: Only the Switch SW1 settings listed in this table, have been tested.
Table C-2 - CPU/System Controller Bd. Configuration Switch SW2 - Assignments
Note: Except for SW2-4, ON = Factory Default
SW# Function Setting - (ON = Factory Default)
SW2-1 Watchdog Enable
ON = Watchdog circuit is Enabled
OFF = Watchdog circuit is Disabled
SW2-2
Lock/Unlock
Soft Switches
ON = Write to Soft Switches and FLASH files
OFF = Soft Switches, configurations and FLASH files are locked
SW2-3
Use/Ignore
Soft Switches
ON = Use Soft Switches (configured in FLASH)
OFF = Ignore Soft Switch Configuration and use factory defaults
SW2-4
Core Updump
See Section 3.6
ON = Core Updump Disabled
OFF = Core Updump Enabled via Mode Switch (SW1)
SW2-5 SRAM Control
ON = Retain values in SRAM during restarts
OFF = Force system to reinitialize SRAM
SW2-6
System Firmware
Load Control *
ON = Enable remote download of System Firmware
OFF = Disable remote download of System Firmware
SW2-8 Enable WINDIAG
ON = Normal Operation (don’t allow WINDIAG to run test)
OFF = Disable boot project (allow WINDIAG to run test)
* = Boot PROM version 4.7 or higher and System PROM version 4.7 or higher
Table C-3 - CPU/System Controller Bd. Switch SW3 Assignments
RS-485
Loopback & Termination Control for COM3
SWITCH
#
RS-485 Function
Switch ON
Setting
SW3-1 TX+ to RX+ Loopback/2-Wire
ON – 2-Wire Operation or Loopback Enabled
OFF – 4-Wire Operation & Loopback Disabled
SW3-2
TX− to RX− Loopback/2-Wire
ON – 2-Wire Operation or Loopback Enabled
OFF – 4-Wire Operation & Loopback Disabled
SW3-3 100 Ohm RX+ Termination ON – End Nodes Only
SW3-4
100 Ohm RX− Termination
ON – End Nodes Only
SW3-7 RX+ Bias (End Nodes/Node)
ON – 4-Wire = Both End Nodes
2-Wire = One End Node Only
OFF – No Bias
SW3-8
RX− Bias (End Nodes/Node)
ON – 4-Wire = Both End Nodes
2-Wire = One End Node Only
OFF – No Bias
SW3-5 & SW3-6 Not Used
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