Table 20: Bit Combination With A Connected Sensor Functioning As A Make; Table 21: Combinations With A Connected Sensor Functioning As A Break - WAGO 750-439 Manual

WAGO-I/O-SYSTEM 750
750-439 8DI NAMUR Ex i
Fieldbus-specific evaluation of the errors (wire break, short circuit) is channel by
channel via the status bits. The I/O module generates a generic code that the
fieldbus coupler/controller implements.
When sensor type NO ("Normally Open", make contact) is enabled, the following
logic applies:
Table 20: Bit Combination with a Connected Sensor Functioning as a Make Contact
Input byte D1
Short circuit / wire break
When sensor type NC ("Normally Closed", break contact) is enabled, the
following logic applies:
Table 21: Combinations with a Connected Sensor Functioning as a Break Contact
Input byte D1
Short circuit / wire break
(0 ... 7)
0
0
1
1
(0 ... 7)
0
0
1
1
Version 1.3.0, valid from HW Version 03, SW Version 03
Output byte D0
(0 ... 7)
Signal status
0
1
0
1
Output byte D0
(0 ... 7)
Signal status
0
1
0
1
Process Image
Explanation
Contact open or
NAMUR sensor in
"blocking" status
("0" per EN 60947-5-6)
Contact closed or
NAMUR sensor in
"conductive" status
("1" per EN 60947-5-6)
Line break
Short circuit
Explanation
Contact closed or
NAMUR sensor in
"conductive" status
("1" per EN 60947-5-6)
Contact open or NAMUR
sensor in "blocking" status
("0" per EN 60947-5-6)
Short circuit
Line break
Manual
31