Function: Direct Control Of The Do Digital Output - Siemens SIMATIC ET 200S Operating Instructions Manual

5.4.9

Function: Direct Control of the DO Digital Output

Definition
You can directly control the digital output DO of the 2PULSE to test the actuator you have
connected. To do this, you have to select the function from your control program with the
MANUAL_DO control bit set and SW_ENABLE control bit cleared. The function
● Supports you in commissioning a plant
● Allows you to utilize an unused channel of the 2PULSE as DO
After you have selected the function, the feedback bits STS_ENABLE and ERR_PULS are
cleared by the 2PULSE, and an active output sequence is aborted. The function takes
precedence over the currently selected operating mode.
You specify the status of the digital output DO with the SET_DO control bit.
When you clear the MANUAL_DO control bit, you deselect the "Direct control of the digital
output DO" function. This deletes the digital output DO. You can then restart an output
sequence with the rising edge of SW_ENABLE.
Control and Feedback Signals/Output Signal
Signals Meaning
Control signals
SW_ENABLE To select the function, the
control bit must be
deleted.
MANUAL_DO You can select and
deselect the function with
the control bit.
SET_DO You use the control bit to
set the status of the digital
output DO.
Feedback signals
STS_ENABLE Deleted after the function
has been selected.
STS_DO Indicates the signal level
at the digital output DO.
Note the update rate.
STS_ DI Indicates the signal level
at digital input DI.
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07
Value range
0 = SW_ENABLE cleared.
1 = SW_ENABLE set
0 = direct control of the DO not
selected.
1 = direct control of the DO
selected.
0 = signal 0 on digital output DO
1 = signal 1 on digital output DO
0 = pulse output blocked
1 = pulse output running
0 = Signal 0 on digital output DO
1 = Signal 1 on digital output DO
0 = Signal 0 on digital input DI
1 = Signal 1 on digital input DI
5.4 Modes and Functions
When the short When the long
control interface is control interface is
used (8 bytes) used (12 bytes)
Channel Channel Channel
0 1 0
address address address
Byte 2: Byte 6: Byte 4:
Bit 0 Bit 0 Bit 0
Byte 2: Byte 6: Byte 4:
Bit 1 Bit 1 Bit 1
Byte 2: Byte 6: Byte 4:
Bit 2 Bit 2 Bit 2
Byte 0: Byte 4: Byte 0:
Bit 0 Bit 0 Bit 0
Byte 0: Byte 4: Byte 0:
Bit 1 Bit 1 Bit 1
Byte 0: Byte 4: Byte 0:
Bit 2 Bit 2 Bit 2
2PULSE
Channel
1
address
Byte 10:
Bit 0
Byte 10:
Bit 1
Byte 10:
Bit 2
Byte 4:
Bit 0
Byte 4:
Bit 1
Byte 4:
Bit 2
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