A.5
Address space
[ID: 80188171403]
Abbreviations
● "IB" stands for input byte, that is, the module start address in the input area
● "QB" stands for output byte, that is the module start address in the output area
● "DQ" stands for digital output
● "QDQn" stands for the value status (QI) of digital output n
Address space
The following figure shows the mapping of the address space of the RQ 4x120VDC-230VAC/
5A CO HA.
QB/IB
7
6
5
4
3
2
1
0
QBx
0
0
0
0
DQ3
DQ2
DQ1
DQ0
IBx
0
0
0
0
QDQ3
QDQ2
QDQ1
QDQ0
Evaluating the value status
There is a bit value status for each digital output in the input address space.
Irrespective of the diagnostics enables, each value status (each QI bit) provides information
on the validity of the corresponding process value.
● Value status = 1: Process value okay, "good"
● Value status = 0: Process value not okay, "bad"
Basically, the value status is set to "good" if the digital value can be output without error. The
value status is set to "bad" in the following cases:
● The digital value cannot be output due to an error.
● The digital channel is deactivated.
Drivers, parameters, diagnostics messages and address space
A.5 Address space
Digital Output Module RQ 4x120VDC-230VAC/5A CO HA (6DL1132-6HD50-0PK0)
36
Manual, 11/2017, A5E39389042-AC
