X20 system modules • Digital output modules • X20DO4321
X20 system User's Manual 3.10
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4.15.8.10.4 Digital outputs
The output status is transferred to the output channels with a fixed offset (<60 µs) in relation to the network cycle
(SyncOut).
4.15.8.10.4.1 Switching state of digital outputs 1 to 4
Name:
DigitalOutput
DigitalOutput01 to DigitalOutput04
The switching state of digital outputs 1 to 4 are stored in this register.
Function model 0 - Standard only:
The "packed outputs" setting in the AS I/O configuration is used to determine whether all of this registers' bits
should be set up individually as data points in the AS I/O mapping ("DigitalOutput01" through "DigitalOutput0x") or
whether this register should be displayed as an individual USINT data point ("DigitalOutput").
Data type
Value
Information
0 to 15
Packed outputs = on
USINT
See bit structure
Packed outputs = off or function model <> 0 - Standard
Bit structure:
Bit
Name
Value
Information
0
Digital output 01 reset
0
DigitalOutput01
1
Digital output 01 set
...
...
0
Digital output 04 reset
3
DigitalOutput04
1
Digital output 04 set
4.15.8.10.5 Monitoring status of the digital outputs
On the module, the output states of the outputs are compared to the setpoint states. The control of the output
driver is used for the setpoint states.
A change in the output state resets monitoring for that output. The status of each individual channel can be read.
A change in the monitoring status generates an error message.
4.15.8.10.5.1 Status of digital outputs 1 to 4
Name:
StatusInput01
StatusDigitalOutput01 to StatusDigitalOutput04
The status of digital outputs 1 to 4 is mapped in this register.
Function model 0 - Standard only:
The "packed outputs" setting in the AS I/O configuration is used to determine whether all of this registers'
bits should be set up individually as data points in the AS I/O mapping ("StatusDigitalOutput01" through
"StatusDigitalOutput0x") or whether this register should be displayed as an individual USINT data point
("StatusInput01").
Data type
Value
Information
0 to 15
Packed outputs = on
USINT
See bit structure
Packed outputs = off or function model <> 0 - Standard
Bit structure:
Bit
Value
Information
0
Channel 01: No error
0
StatusDigitalOutput01
1
Channel 01: Short circuit or overload
...
...
0
Channel 04: No error
3
StatusDigitalOutput04
1
Channel 04: Short circuit or overload
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