Rockwell Automation 1771-IL INSTL.INSTR.ISOL ANALOG INPUT - Manual (Page 10)

Isolated Analog Input Module 10
Publication 1771Ć5.51 - October 1996
Default Configuration
If a write block of with all zeroes is sent to the module, the default
selections will be:
•
1 to 5V dc or 4 to 20mA (depends on voltage/current selection
jumper setting)
•
BCD data format
•
no real time sampling (RTS)
•
no digital filter
•
no scaling
•
no alarms
The front panel of the isolated analog input module contains a green
RUN indicator and a red FAULT indicator. At power-up, the module
momentarily turns on both indicators as a lamp test, then checks for:
•
correct RAM operation
•
EPROM operation
•
EEPROM operation
•
a valid write block transfer with configuration data
If there is no fault, the red indicator turns off.
The green indicator comes on when the module is powered. It will
flash until the module is programmed. If a fault is found initially or
occurs later, the red fault indicator lights. The module also reports
status and specific faults (if they occur) in every transfer of data
(BTR) to the PC processor. Monitor the green and red indicators and
status bits in word 1 of the BTR file when troubleshooting your
module.
RUN
FLT
10528ĆI
Green RUN indicator
Red FAULT indicator
ISOLATED
ANALOG INPU T
Interpret Status Indicators