Lütze 746400, Operation Instructions Manual, Page: 55 / 89

Digital I/O Modules
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Digital Outputs
51
11.3.5 Diagnosis
The error status of the output driver is entered in the status byte. For every output
one byte is entered. The module status flags stays “0“.
There is no Hardware error if the output is 0. If the output is “1“ there is an
overload on the output channel.
Bit i = 0:Switching statuts of the output channel DOx is off.
Bit i = 1:Switching status of the input channel DOx is on.
Bit i = 0: No error at the driver of the output channel DOx.
Bit i = 1: Overload on the output channel DOx.
Byte 1 (Read-back Bytes)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Switching
Status
(actual)
Output
Channel DO
8 Switching
Status
(actual)
Output
Channel DO
7 Switching
Status
(actual)
Output
Channel DO
6 Switching
Status
(actual)
Output
Channel DO
5 Switching
Status
(actual)
Output
Channel DO
4 Switching
Status
(actual)
Output
Channel DO
3 Switching
Status
(actual)
Output
Channel DO
2 Switching
Status
(actual)
Output
Channel DO
1
Byte 2 (Status of the Output Driver)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Statuts
Output
Driver
Channel
DO 8 Statuts
Output
Driver
Channel DO
7 Statuts
Output
Driver
Channel DO
6 Statuts
Output
Driver
Channel DO
5 Statuts
Output
Driver
Channel DO
4 Statuts
Output
Driver
Channel DO
3 Statuts
Output
Driver
Channel DO
2 Statuts
Output
Driver
Channel DO
1