Instruction manual

ControlWave Gas Flow Computer (GFC Plus) Instruction Manual (CI-ControlWave GFC Plus)
Revised Feb-2013 Installation 2-17
Switch
Setting
Function Mode
2
TX- to RX- Loopback / 2-
wire
ON (2-wire operation or loopback enabled)
OFF (4-wire operation and loopback
disabled)
3
100 Ohm RX+ Termination
ON (End nodes only)
4
100 Ohm RX- Termination
ON (End nodes only)
5
N/A Not currently used
6
N/A Not currently used
7
RX+ Bias (End
Nodes/Node)
ON (4-wire = Both End nodes only; 2-wire=
One end node only)
OFF = No bias
8
RX- Bias (End
Nodes/Node)
ON (4-wire = Both End nodes only; 2-wire=
One end node only)
OFF = No bias
2.3.2 Setting Jumpers on the CPU/System Controller Board
The CPU has several jumpers.
 W1: COM1 CTS usage:
o 1-to-2 Installed = COM1 CTS source is from device.
o 2-to-3 Installed = COM1 RTS to CTS loopback
 W2: COM2 CTS usage:
o 1-to-2 Installed = COM2 CTS source is from device.
o 2-to-3 Installed = COM2 RTS to CTS loopback
Note: You must enable the backup battery by setting jumper W3 to
position 1-2.
 W3: Enable/disable battery backup selection:
o 1-to-2 Installed = Enable battery backup.
o 2-to-3 Installed = Disable battery backup
 W5: Power supply shut down selection:
o 1-to-2 Installed = 12/24V power supply shut down hysteresis
o 2-to-3 Installed = 6V power supply shut down hysteresis
 W6: Power supply shut down selection:
o 1-to-2 Installed = 12V power supply shut down
o 2-to-3 Installed = 6/24V power supply shut down
 W7: Power fail trip point hysteresis selection:
o 1-to-2 Installed = 12/24V power fail trip point hysteresis
o 2-to-3 Installed = 6V power fail trip point hysteresis
 W8: Power fail trip point selection:
o 1-to-2 Installed = 12V power fail trip point