Communication Diagnostics; Communication Status Leds; Table 27 - Communication Status Leds - Keyscan CA250 Series Technical Manual

Communication Diagnostics

The PC109x control boards have communication status LEDs and a system status LED, which indicate the
current communication status.
For CIM diagnostic LEDs, refer to page 118.

Communication Status LEDs

The CA250B, CA4500B, CA8500B, EC1500B, EC2500B, CB-485, and CPB-10-2 have communication LEDs for
diagnostics and troubleshooting. The table below outlines the LED and its diagnostic function. When calling
Keyscan technical support, indicating the LEDs state assists our technicians in isolating potential difficulties.
All CA & EC Control Boards
LED State of LED
Flashing – normal
TD 1 - Green
Not Illuminated – abnormal
condition
Illuminated – abnormal
condition
Flashing – normal
RD 1 - Red
Not Illuminated – abnormal
condition
Illuminated – abnormal
condition
Flashing – normal
TD 2 – Green
Not Illuminated
Illuminated – abnormal
condition
Flashing – normal
RD 2 – Red
Not Illuminated -
Illuminated - abnormal
condition
Keyscan Inc. – Technical Guide (PC109x - 07.15)
Table 27 – Communication Status LEDs
Notes
If IOCB function disabled in Client software, main processor sending data
to on-board supervised inputs processor only
If IOCB function enabled in Client software, main processor sending data
to on-board supervised inputs processor and IOCB modules connected to
TB2
Follow restore factory defaults S3 procedure in attempt to resolve.
Follow restore factory defaults S3 procedure in attempt to resolve.
If IOCB function disabled in Client software, main processor receiving
data from on-board supervised inputs processor only
If IOCB function enabled in Client software, main processor receiving
data from on-board supervised inputs processor and IOCB modules
connected to TB2
Follow restore factory defaults S3 procedure in attempt to resolve
Follow restore factory defaults S3 procedure in attempt to resolve
Control board sending global, inter-panel communication data to CIM
module connected to H2 header
If CIM module not connected to H2 header
If CIM module not communicating
Follow restore factory defaults S3 procedure in attempt to resolve
Control board receiving data from CIM module connected to H2 header
for global, inter-panel communication
If CIM module not connected to H2 header
If CIM module not communicating
Possible fault on CIM module
Possible wiring fault
128