Table 153: Behavior Of The I/O Module In The Event Of Overflow/Underflow - WAGO 750-489 Manual

152 Diagnostics

Table 153: Behavior of the I/O Module in the Event of Overflow/Underflow

Overflow/
Underflow
Monitoring
Off
Off
On
On
*) The different types of monitoring must be enabled/disabled separately.
Manual
Version 1.1.0, valid from FW Version 02
Underrange/
Overrange
Monitoring
*) *)
Off
On
Off
On
WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Behavior of the I/O Module in the Event
of Overflow/Underflow
• The upper measurement range
value is output as a process value
No change to the status byte
•
• Error LED does not light up
The upper measurement range
•
value is output as a process value
Error bit is set
•
(bit 0: underrange or
bit 1: overrange)
• General error (bit 6: general error)
is set
Error LED lights up
•
Process value is saturated
•
Error bit is set
•
(bit 4: underflow or
bit 5: overflow)
General error (bit 6: general error)
•
is set
Error LED lights up
•
Process value is saturated
•
• Error bit is set
(bit 4: underflow or
bit 5: overflow)
General error (bit 6: general error)
•
is set
Error LED lights up
•