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Rockwell Automation 1790-TXXXX CompactBlock LDX I/O Profibus Analog, RTD and Thermocouple User Manual

Page 21

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21

Publication 1790-IN010B-EN-P - April 2003

RTD and Thermocouple Blocks - I/O Channel LED Status Indicator

Status:

Description:

Flashing Green/Red

Power up

Off

Off line

Red

On line and no field power

Red

PROFIBUS connection and no field power

Flashing Red

Field power and open wire

Green

Field power and valid input

Flashing Red

Input over range

Flashing Red

Input under range

Flashing Red

Recoverable fault

I/O Channel LED Status Indicator

1790D-TN4C0

1790D-TN0C2

Status:

Description:

Status:

Description:

Flashing Green/
Red

Power up

Flashing Green/
Red

Power up

Off

Off line

Off

Off line

Red

On line and no field
power

Off

On line and no field
power

Red

PROFIBUS connection
and no field power

Green

PROFIBUS connection
and no field power

Flashing Red

1

Field power and open
wire (4-20mA range
only)

2

Green

Field power and open
wire

Green

Field power and valid
input

Green

Field power and valid
output

Green

Input over range

Flashing Red

Field power and
output out of range

Flashing Red

1

Input under range
<3mA (4-20ma
range only)

2

Flashing Green

Output idle

Flashing Red

Recoverable fault

Flashing Red

Recoverable fault

1

Green for 0-20mA range.

2

Can be determined from the data table.