Rockwell Automation 1746-NO8V SLC 500 8-Point Analog Output Module/ User Manual - Manual (Page 49)

Publication 1746-UM026A-EN-P - September 2003
I/O Data and Status Information 5-5
Input Status 1 Descriptions
Output Enable Echo (Status Bit 0)
This bit shows the current channel status. The channel is enabled
when this bit echo is 1.
Output Range Echo (Status Bits 1 and 2)
These bits echo the current output range for the active channel.
Scale Echo (Status Bits 4 to 6)
These bits shows the current channel data format setting
24V Power Failure Echo (Status Bit 12)
This bit is set to 1 if the external 24V dc power supply (selected via
Jumper J4) has failed. This bit will clear when the external 24V dc
supply is present and, if the Latch Alarms feature is enabled, the Reset
Latched Alarms bit has been set or toggled.
If the J4 jumper is missing, the module will report a 24V dc power fail,
regardless of whether external 24 V dc power is present or not.
Open Current Loop (Status Bit 13)
This bit is set to 1 if there is no load (open loop) on the output
channel. Open loop detect will only be indicated if the current being
commanded is greater than 0.1 mA. Invalid open loop detection may
occur if the channel load resistance is greater than the specified
maximum resistance of 500 ohms, or less than 0.1 mA is commanded.
This bit will clear when the channel is no longer in an open loop
condition (or commanding less than 0.1 mA) and, if the Latch Alarms
feature is enabled, the Reset Latched Alarms bit has been set or
toggled.
Module / SLC Resetting (Status Bit 14)
This bit is set to 1 whenever the module or SLC is resetting. The bit
will clear when both the module and the SLC are not resetting. This
bit is not latched by the Latch Alarm feature. Do not send
configuration data to the module when this bit is set
Fatal Channel Error (Status Bit 15)
This bit is set to 1 whenever your module detects a “non-recoverable”
channel error, such as a software power-up failure due to corrupt
hardware or malfunctioning software. You may be able to recover
from this type of error by resetting the SLC 500 processor or cycling
power to your module. This bit is not latched by the Latch Alarm
feature.