Table 45: Behavior Of The I/O Module In The Event Of Range Violation - WAGO 750 Series Manual

86 Diagnostics

Table 45: Behavior of the I/O Module in the Event of Range Violation

Overflow/
Underflow
Monitoring
Off
Off
On
On
*) The different types of monitoring must be enabled/disabled separately.
The limiting values for detecting a measurement underrange/overrange or an
overflow/underflow, as well as the process values that are output, are specified in
the process value tables (see Section "Process Image").
Note how long diagnostics are indicated!
A diagnosed error status is indicated for at least 200 ms even if the detected
error status is no longer present in this period. If a higher-priority error status
occurs in this period, the higher-priority error status is displayed for 200 ms, and
the lower-priority error status is lost!
Manual
Version 1.0.0
Underrange/
Overrange
Monitoring
*) *)
Off
On
Off
On
750-1491 2AI Resistor Bridge (Strain Gauge)
Behavior of the I/O Module in the Event
of Range Violation
• The measured value is output as a
process value outside the specified
range
No change to the status byte
•
• Error LED does not light up
The measured value is output as a
•
process value outside the specified
range
Error bit is set
•
(bit 0: underrange or
bit 1: overrange)
General error is set
•
(bit 6: general error)
Error LED lights up
•
The measured value is output as a
•
process value outside the specified
range
• No change to the status byte
Error LED does not light up
•
The measured value is output as a
•
process value outside the specified
range
• Error bit is set
(bit 0: underrange or
bit 1: overrange)
General error is set
•
(bit 6: general error)
Error LED lights up
•
WAGO I/O System 750