X20 system modules • Digital output modules • X20DO8322
1250
X20 system User's Manual 3.10
4.15.23.9 Register description
4.15.23.9.1 Function model 0 - Standard
Read
Write
Register
Fixed offset Name
Data type
Cyclic
Acyclic
Cyclic
Acyclic
USINT
DigitalOutput01
Bit 0
...
...
2
0
DigitalOutput08
Bit 7
●
USINT
StatusDigitalOutput01
Bit 0
...
...
30
1
StatusDigitalOutput08
Bit 7
●
Fixed modules require their data points to be in a specific order in the X2X frame. Cyclic access occurs according
to a predefined offset, not based on the register address.
Acyclic access is continues to be based on the register numbers.
4.15.23.9.2 Function model 254 - Bus Controller
Read
Write
Register
Offset
1)
Name
Data type
Cyclic
Acyclic
Cyclic
Acyclic
Switching state of digital outputs 1 to 8
USINT
DigitalOutput01
Bit 0
...
...
2
0
DigitalOutput08
Bit 7
●
Status of digital outputs 1 to 8
USINT
StatusDigitalOutput01
Bit 0
...
...
30
-
StatusDigitalOutput08
Bit 7
●
1)
The offset specifies where the register is within the CAN object.
4.15.23.9.3 Digital outputs
The output status is transferred to the output channels with a fixed offset (<60 µs) in relation to the network cycle
(SyncOut).
4.15.23.9.3.1 Switching state of digital outputs 1 to 8
Name:
DigitalOutput
DigitalOutput01 to DigitalOutput08
The switching state of digital outputs 1 to 8 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 255
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 08 reset
7
DigitalOutput08
1
Digital output 08 set
4.15.23.9.4 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.
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