Checking Leds - Emerson ControlWave Instruction Manual

ControlWave I/O Expansion Rack Instruction Manual

5.3.2 Checking LEDs

Module /
Board
PSSM MC
PSSM PWR DOWN
PSSM PWR GOOD
CPU CR1 – WATCHDOG
CPU CR2 – IDLE
5-14
ports by powering down the unit, and then setting CPU switch SW1-
3 to OFF and restoring power.
 Incorrect BSAP local address – this address must be an integer from
1 to 127 and must be unique on this particular BSAP communication
line. You set the BSAP local address using the flash configuration
utility. If this ControlWave is a BSAP slave node, and the range of
addresses defined for the BSAP master port end of the
communication line does not encompass the local BSAP address
defined for this ControlWave, BSAP communications will not
function.
 Incorrect EBSAP Group number – if you use expanded BSAP the
EBSAP group number must be correct; if you are not using EBSAP,
the group number must be 0.
If IP communications do not function, it is often due to incorrect IP
addresses or masks. Check to see that the IP address you defined for the
ControlWave is compatible with the range of IP addresses defined for
the communication line on which the unit resides. Also check that the IP
address of the default gateway is correct.
ControlWave modules contain light emitting diodes (LEDs) that provide
operational and diagnostic functions.
Table 5-1 shows LED assignments on modules.
Table 5-1. LED Assignments on Modules
LED Name LED Color
Red Lights when the CPU is not running, and I/O
has been reset to 0. This lights momentarily
when unit first powers on or when the unit
resets. Master Clear; ON 2msec after PWR
FAIL goes low. See Figure 5-11.
Red ON = Bulk or regulated power has fallen below
acceptable levels. See Figure 5-11.
Green ON = Normal operation; all power supplies
okay. See Figure 5-11. Each power supply on
the PSSM also has its own LED which lights
when power is good. If this LED does not light,
remove the power supply and check the fuse.
Then ensure that the board is fully inserted.
Red ON = Watchdog condition. See Section 2.3.7
for a description of what causes a watchdog.
See Figure 5-12.
Red ON = CPU idle. The CPU should show idle
most of the time. If this light goes OFF and
Service & Troubleshooting
Function and Location
Revised Aug-2015